mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
14dcc82e76
This bug was introduced with the new nested CMS actions around December 2012, but wasn't noticed until now because checkAccessAction() would wrongly return TRUE before the dataFieldByName() check was reached.
1488 lines
43 KiB
PHP
1488 lines
43 KiB
PHP
<?php
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/**
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* Base class for all forms.
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* The form class is an extensible base for all forms on a SilverStripe application. It can be used
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* either by extending it, and creating processor methods on the subclass, or by creating instances
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* of form whose actions are handled by the parent controller.
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*
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* In either case, if you want to get a form to do anything, it must be inextricably tied to a
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* controller. The constructor is passed a controller and a method on that controller. This method
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* should return the form object, and it shouldn't require any arguments. Parameters, if necessary,
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* can be passed using the URL or get variables. These restrictions are in place so that we can
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* recreate the form object upon form submission, without the use of a session, which would be too
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* resource-intensive.
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*
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* You will need to create at least one method for processing the submission (through {@link FormAction}).
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* This method will be passed two parameters: the raw request data, and the form object.
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* Usually you want to save data into a {@link DataObject} by using {@link saveInto()}.
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* If you want to process the submitted data in any way, please use {@link getData()} rather than
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* the raw request data.
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*
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* <h2>Validation</h2>
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* Each form needs some form of {@link Validator} to trigger the {@link FormField->validate()} methods for each field.
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* You can't disable validator for security reasons, because crucial behaviour like extension checks for file uploads
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* depend on it.
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* The default validator is an instance of {@link RequiredFields}.
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* If you want to enforce serverside-validation to be ignored for a specific {@link FormField},
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* you need to subclass it.
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*
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* <h2>URL Handling</h2>
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* The form class extends {@link RequestHandler}, which means it can
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* be accessed directly through a URL. This can be handy for refreshing
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* a form by ajax, or even just displaying a single form field.
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* You can find out the base URL for your form by looking at the
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* <form action="..."> value. For example, the edit form in the CMS would be located at
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* "admin/EditForm". This URL will render the form without its surrounding
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* template when called through GET instead of POST.
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*
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* By appending to this URL, you can render invidual form elements
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* through the {@link FormField->FieldHolder()} method.
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* For example, the "URLSegment" field in a standard CMS form would be
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* accessible through "admin/EditForm/field/URLSegment/FieldHolder".
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*
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* @package forms
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* @subpackage core
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*/
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class Form extends RequestHandler {
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const ENC_TYPE_URLENCODED = 'application/x-www-form-urlencoded';
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const ENC_TYPE_MULTIPART = 'multipart/form-data';
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/**
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* @var boolean $includeFormTag Accessed by Form.ss; modified by {@link formHtmlContent()}.
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* A performance enhancement over the generate-the-form-tag-and-then-remove-it code that was there previously
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*/
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public $IncludeFormTag = true;
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protected $fields;
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protected $actions;
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protected $controller;
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protected $name;
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protected $validator;
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protected $formMethod = "post";
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protected static $current_action;
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/**
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* @var Dataobject $record Populated by {@link loadDataFrom()}.
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*/
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protected $record;
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/**
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* Keeps track of whether this form has a default action or not.
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* Set to false by $this->disableDefaultAction();
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*/
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protected $hasDefaultAction = true;
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/**
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* Target attribute of form-tag.
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* Useful to open a new window upon
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* form submission.
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*
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* @var string
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*/
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protected $target;
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/**
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* Legend value, to be inserted into the
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* <legend> element before the <fieldset>
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* in Form.ss template.
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*
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* @var string
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*/
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protected $legend;
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/**
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* The SS template to render this form HTML into.
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* Default is "Form", but this can be changed to
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* another template for customisation.
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*
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* @see Form->setTemplate()
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* @var string
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*/
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protected $template;
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protected $buttonClickedFunc;
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protected $message;
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protected $messageType;
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/**
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* Should we redirect the user back down to the
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* the form on validation errors rather then just the page
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*
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* @var bool
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*/
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protected $redirectToFormOnValidationError = false;
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protected $security = true;
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/**
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* @var SecurityToken
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*/
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protected $securityToken = null;
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/**
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* @var array $extraClasses List of additional CSS classes for the form tag.
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*/
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protected $extraClasses = array();
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/**
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* @var string
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*/
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protected $encType;
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/**
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* @var array Any custom form attributes set through {@link setAttributes()}.
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* Some attributes are calculated on the fly, so please use {@link getAttributes()} to access them.
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*/
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protected $attributes = array();
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/**
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* Create a new form, with the given fields an action buttons.
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*
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* @param Controller $controller The parent controller, necessary to create the appropriate form action tag.
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* @param String $name The method on the controller that will return this form object.
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* @param FieldList $fields All of the fields in the form - a {@link FieldList} of {@link FormField} objects.
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* @param FieldList $actions All of the action buttons in the form - a {@link FieldLis} of
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* {@link FormAction} objects
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* @param Validator $validator Override the default validator instance (Default: {@link RequiredFields})
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*/
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public function __construct($controller, $name, FieldList $fields, FieldList $actions, $validator = null) {
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parent::__construct();
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if(!$fields instanceof FieldList) {
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throw new InvalidArgumentException('$fields must be a valid FieldList instance');
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}
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if(!$actions instanceof FieldList) {
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throw new InvalidArgumentException('$fields must be a valid FieldList instance');
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}
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if($validator && !$validator instanceof Validator) {
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throw new InvalidArgumentException('$validator must be a Valdidator instance');
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}
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$fields->setForm($this);
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$actions->setForm($this);
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$this->fields = $fields;
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$this->actions = $actions;
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$this->controller = $controller;
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$this->name = $name;
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if(!$this->controller) user_error("$this->class form created without a controller", E_USER_ERROR);
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// Form validation
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$this->validator = ($validator) ? $validator : new RequiredFields();
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$this->validator->setForm($this);
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// Form error controls
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$this->setupFormErrors();
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// Check if CSRF protection is enabled, either on the parent controller or from the default setting. Note that
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// method_exists() is used as some controllers (e.g. GroupTest) do not always extend from Object.
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if(method_exists($controller, 'securityTokenEnabled') || (method_exists($controller, 'hasMethod')
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&& $controller->hasMethod('securityTokenEnabled'))) {
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$securityEnabled = $controller->securityTokenEnabled();
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} else {
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$securityEnabled = SecurityToken::is_enabled();
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}
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$this->securityToken = ($securityEnabled) ? new SecurityToken() : new NullSecurityToken();
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}
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static $url_handlers = array(
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'field/$FieldName!' => 'handleField',
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'POST ' => 'httpSubmission',
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'GET ' => 'httpSubmission',
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'HEAD ' => 'httpSubmission',
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);
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/**
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* Set up current form errors in session to
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* the current form if appropriate.
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*/
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public function setupFormErrors() {
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$errorInfo = Session::get("FormInfo.{$this->FormName()}");
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if(isset($errorInfo['errors']) && is_array($errorInfo['errors'])) {
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foreach($errorInfo['errors'] as $error) {
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$field = $this->fields->dataFieldByName($error['fieldName']);
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if(!$field) {
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$errorInfo['message'] = $error['message'];
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$errorInfo['type'] = $error['messageType'];
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} else {
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$field->setError($error['message'], $error['messageType']);
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}
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}
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// load data in from previous submission upon error
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if(isset($errorInfo['data'])) $this->loadDataFrom($errorInfo['data']);
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}
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if(isset($errorInfo['message']) && isset($errorInfo['type'])) {
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$this->setMessage($errorInfo['message'], $errorInfo['type']);
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}
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}
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/**
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* Handle a form submission. GET and POST requests behave identically.
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* Populates the form with {@link loadDataFrom()}, calls {@link validate()},
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* and only triggers the requested form action/method
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* if the form is valid.
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*/
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public function httpSubmission($request) {
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$vars = $request->requestVars();
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if(isset($funcName)) {
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Form::set_current_action($funcName);
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}
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// Populate the form
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$this->loadDataFrom($vars, true);
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// Protection against CSRF attacks
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$token = $this->getSecurityToken();
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if(!$token->checkRequest($request)) {
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$this->httpError(400, _t("Form.CSRF_FAILED_MESSAGE",
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"There seems to have been a technical problem. Please click the back button,"
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. " refresh your browser, and try again."));
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}
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// Determine the action button clicked
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$funcName = null;
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foreach($vars as $paramName => $paramVal) {
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if(substr($paramName,0,7) == 'action_') {
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// Break off querystring arguments included in the action
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if(strpos($paramName,'?') !== false) {
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list($paramName, $paramVars) = explode('?', $paramName, 2);
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$newRequestParams = array();
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parse_str($paramVars, $newRequestParams);
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$vars = array_merge((array)$vars, (array)$newRequestParams);
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}
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// Cleanup action_, _x and _y from image fields
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$funcName = preg_replace(array('/^action_/','/_x$|_y$/'),'',$paramName);
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break;
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}
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}
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// If the action wasnt' set, choose the default on the form.
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if(!isset($funcName) && $defaultAction = $this->defaultAction()){
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$funcName = $defaultAction->actionName();
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}
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if(isset($funcName)) {
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$this->setButtonClicked($funcName);
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}
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// Permission checks (first on controller, then falling back to form)
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if(
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// Ensure that the action is actually a button or method on the form,
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// and not just a method on the controller.
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$this->controller->hasMethod($funcName)
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&& !$this->controller->checkAccessAction($funcName)
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// If a button exists, allow it on the controller
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&& !$this->actions->dataFieldByName('action_' . $funcName)
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) {
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return $this->httpError(
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403,
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sprintf('Action "%s" not allowed on controller (Class: %s)', $funcName, get_class($this->controller))
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);
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} elseif(
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$this->hasMethod($funcName)
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&& !$this->checkAccessAction($funcName)
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// No checks for button existence or $allowed_actions is performed -
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// all form methods are callable (e.g. the legacy "callfieldmethod()")
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) {
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return $this->httpError(
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403,
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sprintf('Action "%s" not allowed on form (Name: "%s")', $funcName, $this->name)
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);
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}
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// TODO : Once we switch to a stricter policy regarding allowed_actions (meaning actions must be set
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// explicitly in allowed_actions in order to run)
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// Uncomment the following for checking security against running actions on form fields
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/* else {
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// Try to find a field that has the action, and allows it
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$fieldsHaveMethod = false;
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foreach ($this->Fields() as $field){
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if ($field->hasMethod($funcName) && $field->checkAccessAction($funcName)) {
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$fieldsHaveMethod = true;
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}
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}
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if (!$fieldsHaveMethod) {
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return $this->httpError(
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403,
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sprintf('Action "%s" not allowed on any fields of form (Name: "%s")', $funcName, $this->Name())
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);
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}
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}*/
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// Validate the form
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if(!$this->validate()) {
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if(Director::is_ajax()) {
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// Special case for legacy Validator.js implementation (assumes eval'ed javascript collected through
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// FormResponse)
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$acceptType = $request->getHeader('Accept');
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if(strpos($acceptType, 'application/json') !== FALSE) {
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// Send validation errors back as JSON with a flag at the start
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$response = new SS_HTTPResponse(Convert::array2json($this->validator->getErrors()));
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$response->addHeader('Content-Type', 'application/json');
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} else {
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$this->setupFormErrors();
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// Send the newly rendered form tag as HTML
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$response = new SS_HTTPResponse($this->forTemplate());
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$response->addHeader('Content-Type', 'text/html');
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}
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return $response;
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} else {
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if($this->getRedirectToFormOnValidationError()) {
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if($pageURL = $request->getHeader('Referer')) {
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if(Director::is_site_url($pageURL)) {
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// Remove existing pragmas
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$pageURL = preg_replace('/(#.*)/', '', $pageURL);
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return $this->controller->redirect($pageURL . '#' . $this->FormName());
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}
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}
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}
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return $this->controller->redirectBack();
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}
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}
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// First, try a handler method on the controller (has been checked for allowed_actions above already)
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if($this->controller->hasMethod($funcName)) {
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return $this->controller->$funcName($vars, $this, $request);
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// Otherwise, try a handler method on the form object.
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} elseif($this->hasMethod($funcName)) {
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return $this->$funcName($vars, $this, $request);
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} elseif($field = $this->checkFieldsForAction($this->Fields(), $funcName)) {
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return $field->$funcName($vars, $this, $request);
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}
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return $this->httpError(404);
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}
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/**
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* Fields can have action to, let's check if anyone of the responds to $funcname them
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*
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* @return FormField
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*/
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protected function checkFieldsForAction($fields, $funcName) {
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foreach($fields as $field){
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if(method_exists($field, 'FieldList')) {
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if($field = $this->checkFieldsForAction($field->FieldList(), $funcName)) {
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return $field;
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}
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} elseif ($field->hasMethod($funcName)) {
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return $field;
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}
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}
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}
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/**
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* Handle a field request.
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* Uses {@link Form->dataFieldByName()} to find a matching field,
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* and falls back to {@link FieldList->fieldByName()} to look
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* for tabs instead. This means that if you have a tab and a
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* formfield with the same name, this method gives priority
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* to the formfield.
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*
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* @param SS_HTTPRequest $request
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* @return FormField
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*/
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public function handleField($request) {
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$field = $this->Fields()->dataFieldByName($request->param('FieldName'));
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if($field) {
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return $field;
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} else {
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// falling back to fieldByName, e.g. for getting tabs
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return $this->Fields()->fieldByName($request->param('FieldName'));
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}
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}
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/**
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* Convert this form into a readonly form
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*/
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public function makeReadonly() {
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$this->transform(new ReadonlyTransformation());
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}
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/**
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* Set whether the user should be redirected back down to the
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* form on the page upon validation errors in the form or if
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* they just need to redirect back to the page
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*
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* @param bool Redirect to the form
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*/
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public function setRedirectToFormOnValidationError($bool) {
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$this->redirectToFormOnValidationError = $bool;
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return $this;
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}
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/**
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* Get whether the user should be redirected back down to the
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* form on the page upon validation errors
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*
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* @return bool
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*/
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public function getRedirectToFormOnValidationError() {
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return $this->redirectToFormOnValidationError;
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}
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/**
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* Add an error message to a field on this form. It will be saved into the session
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* and used the next time this form is displayed.
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*/
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public function addErrorMessage($fieldName, $message, $messageType) {
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Session::add_to_array("FormInfo.{$this->FormName()}.errors", array(
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'fieldName' => $fieldName,
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'message' => $message,
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'messageType' => $messageType,
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));
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}
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public function transform(FormTransformation $trans) {
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$newFields = new FieldList();
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foreach($this->fields as $field) {
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$newFields->push($field->transform($trans));
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}
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$this->fields = $newFields;
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$newActions = new FieldList();
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foreach($this->actions as $action) {
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$newActions->push($action->transform($trans));
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}
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$this->actions = $newActions;
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// We have to remove validation, if the fields are not editable ;-)
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if($this->validator)
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$this->validator->removeValidation();
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}
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/**
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* Get the {@link Validator} attached to this form.
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* @return Validator
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*/
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public function getValidator() {
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return $this->validator;
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}
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/**
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* Set the {@link Validator} on this form.
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*/
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public function setValidator( Validator $validator ) {
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if($validator) {
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$this->validator = $validator;
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$this->validator->setForm($this);
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}
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return $this;
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}
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/**
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* Remove the {@link Validator} from this from.
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*/
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public function unsetValidator(){
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$this->validator = null;
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return $this;
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}
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|
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/**
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* Convert this form to another format.
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*/
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public function transformTo(FormTransformation $format) {
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$newFields = new FieldList();
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foreach($this->fields as $field) {
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$newFields->push($field->transformTo($format));
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}
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$this->fields = $newFields;
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// We have to remove validation, if the fields are not editable ;-)
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if($this->validator)
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$this->validator->removeValidation();
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}
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|
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/**
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* Generate extra special fields - namely the security token field (if required).
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*
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* @return FieldList
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*/
|
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public function getExtraFields() {
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$extraFields = new FieldList();
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$token = $this->getSecurityToken();
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$tokenField = $token->updateFieldSet($this->fields);
|
|
if($tokenField) $tokenField->setForm($this);
|
|
$this->securityTokenAdded = true;
|
|
|
|
// add the "real" HTTP method if necessary (for PUT, DELETE and HEAD)
|
|
if($this->FormMethod() != $this->FormHttpMethod()) {
|
|
$methodField = new HiddenField('_method', '', $this->FormHttpMethod());
|
|
$methodField->setForm($this);
|
|
$extraFields->push($methodField);
|
|
}
|
|
|
|
return $extraFields;
|
|
}
|
|
|
|
/**
|
|
* Return the form's fields - used by the templates
|
|
*
|
|
* @return FieldList The form fields
|
|
*/
|
|
public function Fields() {
|
|
foreach($this->getExtraFields() as $field) {
|
|
if(!$this->fields->fieldByName($field->getName())) $this->fields->push($field);
|
|
}
|
|
|
|
return $this->fields;
|
|
}
|
|
|
|
/**
|
|
* Return all <input type="hidden"> fields
|
|
* in a form - including fields nested in {@link CompositeFields}.
|
|
* Useful when doing custom field layouts.
|
|
*
|
|
* @return FieldList
|
|
*/
|
|
public function HiddenFields() {
|
|
return $this->fields->HiddenFields();
|
|
}
|
|
|
|
/**
|
|
* Return all fields except for the hidden fields.
|
|
* Useful when making your own simplified form layouts.
|
|
*/
|
|
public function VisibleFields() {
|
|
return $this->fields->VisibleFields();
|
|
}
|
|
|
|
/**
|
|
* Setter for the form fields.
|
|
*
|
|
* @param FieldList $fields
|
|
*/
|
|
public function setFields($fields) {
|
|
$this->fields = $fields;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Return the form's action buttons - used by the templates
|
|
*
|
|
* @return FieldList The action list
|
|
*/
|
|
public function Actions() {
|
|
return $this->actions;
|
|
}
|
|
|
|
/**
|
|
* Setter for the form actions.
|
|
*
|
|
* @param FieldList $actions
|
|
*/
|
|
public function setActions($actions) {
|
|
$this->actions = $actions;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Unset all form actions
|
|
*/
|
|
public function unsetAllActions(){
|
|
$this->actions = new FieldList();
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* @param String
|
|
* @param String
|
|
*/
|
|
public function setAttribute($name, $value) {
|
|
$this->attributes[$name] = $value;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* @return String
|
|
*/
|
|
public function getAttribute($name) {
|
|
return @$this->attributes[$name];
|
|
}
|
|
|
|
public function getAttributes() {
|
|
$attrs = array(
|
|
'id' => $this->FormName(),
|
|
'action' => $this->FormAction(),
|
|
'method' => $this->FormMethod(),
|
|
'enctype' => $this->getEncType(),
|
|
'target' => $this->target,
|
|
'class' => $this->extraClass(),
|
|
);
|
|
if($this->validator && $this->validator->getErrors()) {
|
|
if(!isset($attrs['class'])) $attrs['class'] = '';
|
|
$attrs['class'] .= ' validationerror';
|
|
}
|
|
|
|
$attrs = array_merge($attrs, $this->attributes);
|
|
|
|
return $attrs;
|
|
}
|
|
|
|
/**
|
|
* Return the attributes of the form tag - used by the templates.
|
|
*
|
|
* @param Array Custom attributes to process. Falls back to {@link getAttributes()}.
|
|
* If at least one argument is passed as a string, all arguments act as excludes by name.
|
|
* @return String HTML attributes, ready for insertion into an HTML tag
|
|
*/
|
|
public function getAttributesHTML($attrs = null) {
|
|
$exclude = (is_string($attrs)) ? func_get_args() : null;
|
|
|
|
if(!$attrs || is_string($attrs)) $attrs = $this->getAttributes();
|
|
|
|
// Figure out if we can cache this form
|
|
// - forms with validation shouldn't be cached, cos their error messages won't be shown
|
|
// - forms with security tokens shouldn't be cached because security tokens expire
|
|
$needsCacheDisabled = false;
|
|
if ($this->getSecurityToken()->isEnabled()) $needsCacheDisabled = true;
|
|
if ($this->FormMethod() != 'get') $needsCacheDisabled = true;
|
|
if (!($this->validator instanceof RequiredFields) || count($this->validator->getRequired())) {
|
|
$needsCacheDisabled = true;
|
|
}
|
|
|
|
// If we need to disable cache, do it
|
|
if ($needsCacheDisabled) HTTP::set_cache_age(0);
|
|
|
|
$attrs = $this->getAttributes();
|
|
|
|
// Remove empty
|
|
$attrs = array_filter((array)$attrs, create_function('$v', 'return ($v || $v === 0);'));
|
|
|
|
// Remove excluded
|
|
if($exclude) $attrs = array_diff_key($attrs, array_flip($exclude));
|
|
|
|
// Create markkup
|
|
$parts = array();
|
|
foreach($attrs as $name => $value) {
|
|
$parts[] = ($value === true) ? "{$name}=\"{$name}\"" : "{$name}=\"" . Convert::raw2att($value) . "\"";
|
|
}
|
|
|
|
return implode(' ', $parts);
|
|
}
|
|
|
|
public function FormAttributes() {
|
|
return $this->getAttributesHTML();
|
|
}
|
|
|
|
/**
|
|
* Set the target of this form to any value - useful for opening the form contents in a new window or refreshing
|
|
* another frame
|
|
*
|
|
* @param target The value of the target
|
|
*/
|
|
public function setTarget($target) {
|
|
$this->target = $target;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Set the legend value to be inserted into
|
|
* the <legend> element in the Form.ss template.
|
|
*/
|
|
public function setLegend($legend) {
|
|
$this->legend = $legend;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Set the SS template that this form should use
|
|
* to render with. The default is "Form".
|
|
*
|
|
* @param string $template The name of the template (without the .ss extension)
|
|
*/
|
|
public function setTemplate($template) {
|
|
$this->template = $template;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Return the template to render this form with.
|
|
* If the template isn't set, then default to the
|
|
* form class name e.g "Form".
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getTemplate() {
|
|
if($this->template) return $this->template;
|
|
else return $this->class;
|
|
}
|
|
|
|
/**
|
|
* Returns the encoding type for the form.
|
|
*
|
|
* By default this will be URL encoded, unless there is a file field present
|
|
* in which case multipart is used. You can also set the enc type using
|
|
* {@link setEncType}.
|
|
*/
|
|
public function getEncType() {
|
|
if ($this->encType) {
|
|
return $this->encType;
|
|
}
|
|
|
|
if ($fields = $this->fields->dataFields()) {
|
|
foreach ($fields as $field) {
|
|
if ($field instanceof FileField) return self::ENC_TYPE_MULTIPART;
|
|
}
|
|
}
|
|
|
|
return self::ENC_TYPE_URLENCODED;
|
|
}
|
|
|
|
/**
|
|
* Sets the form encoding type. The most common encoding types are defined
|
|
* in {@link ENC_TYPE_URLENCODED} and {@link ENC_TYPE_MULTIPART}.
|
|
*
|
|
* @param string $enctype
|
|
*/
|
|
public function setEncType($encType) {
|
|
$this->encType = $encType;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns the real HTTP method for the form:
|
|
* GET, POST, PUT, DELETE or HEAD.
|
|
* As most browsers only support GET and POST in
|
|
* form submissions, all other HTTP methods are
|
|
* added as a hidden field "_method" that
|
|
* gets evaluated in {@link Director::direct()}.
|
|
* See {@link FormMethod()} to get a HTTP method
|
|
* for safe insertion into a <form> tag.
|
|
*
|
|
* @return string HTTP method
|
|
*/
|
|
public function FormHttpMethod() {
|
|
return $this->formMethod;
|
|
}
|
|
|
|
/**
|
|
* Returns the form method to be used in the <form> tag.
|
|
* See {@link FormHttpMethod()} to get the "real" method.
|
|
*
|
|
* @return string Form tag compatbile HTTP method: 'get' or 'post'
|
|
*/
|
|
public function FormMethod() {
|
|
if(in_array($this->formMethod,array('get','post'))) {
|
|
return $this->formMethod;
|
|
} else {
|
|
return 'post';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the form method: GET, POST, PUT, DELETE.
|
|
*
|
|
* @param $method string
|
|
*/
|
|
public function setFormMethod($method) {
|
|
$this->formMethod = strtolower($method);
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Return the form's action attribute.
|
|
* This is build by adding an executeForm get variable to the parent controller's Link() value
|
|
*
|
|
* @return string
|
|
*/
|
|
public function FormAction() {
|
|
if ($this->formActionPath) {
|
|
return $this->formActionPath;
|
|
} elseif($this->controller->hasMethod("FormObjectLink")) {
|
|
return $this->controller->FormObjectLink($this->name);
|
|
} else {
|
|
return Controller::join_links($this->controller->Link(), $this->name);
|
|
}
|
|
}
|
|
|
|
/** @ignore */
|
|
private $formActionPath = false;
|
|
|
|
/**
|
|
* Set the form action attribute to a custom URL.
|
|
*
|
|
* Note: For "normal" forms, you shouldn't need to use this method. It is recommended only for situations where
|
|
* you have two relatively distinct parts of the system trying to communicate via a form post.
|
|
*/
|
|
public function setFormAction($path) {
|
|
$this->formActionPath = $path;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* @ignore
|
|
*/
|
|
private $htmlID = null;
|
|
|
|
/**
|
|
* Returns the name of the form
|
|
*/
|
|
public function FormName() {
|
|
if($this->htmlID) return $this->htmlID;
|
|
else return $this->class . '_' . str_replace(array('.', '/'), '', $this->name);
|
|
}
|
|
|
|
/**
|
|
* Set the HTML ID attribute of the form
|
|
*/
|
|
public function setHTMLID($id) {
|
|
$this->htmlID = $id;
|
|
}
|
|
|
|
/**
|
|
* Returns this form's controller.
|
|
* This is used in the templates.
|
|
*/
|
|
public function Controller() {
|
|
return $this->getController();
|
|
}
|
|
|
|
/**
|
|
* Get the controller.
|
|
* @return Controller
|
|
*/
|
|
public function getController() {
|
|
return $this->controller;
|
|
}
|
|
|
|
/**
|
|
* Set the controller.
|
|
* @param Controller $controller
|
|
* @return Form
|
|
*/
|
|
public function setController($controller) {
|
|
$this->controller = $controller;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Get the name of the form.
|
|
* @return string
|
|
*/
|
|
public function getName() {
|
|
return $this->name;
|
|
}
|
|
|
|
/**
|
|
* Set the name of the form.
|
|
* @param string $name
|
|
* @return Form
|
|
*/
|
|
public function setName($name) {
|
|
$this->name = $name;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns an object where there is a method with the same name as each data field on the form.
|
|
* That method will return the field itself.
|
|
* It means that you can execute $firstNameField = $form->FieldMap()->FirstName(), which can be handy
|
|
*/
|
|
public function FieldMap() {
|
|
return new Form_FieldMap($this);
|
|
}
|
|
|
|
/**
|
|
* The next functions store and modify the forms
|
|
* message attributes. messages are stored in session under
|
|
* $_SESSION[formname][message];
|
|
*
|
|
* @return string
|
|
*/
|
|
public function Message() {
|
|
$this->getMessageFromSession();
|
|
return $this->message;
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
public function MessageType() {
|
|
$this->getMessageFromSession();
|
|
return $this->messageType;
|
|
}
|
|
|
|
protected function getMessageFromSession() {
|
|
if($this->message || $this->messageType) {
|
|
return $this->message;
|
|
}else{
|
|
$this->message = Session::get("FormInfo.{$this->FormName()}.formError.message");
|
|
$this->messageType = Session::get("FormInfo.{$this->FormName()}.formError.type");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set a status message for the form.
|
|
*
|
|
* @param message the text of the message
|
|
* @param type Should be set to good, bad, or warning.
|
|
*/
|
|
public function setMessage($message, $type) {
|
|
$this->message = $message;
|
|
$this->messageType = $type;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Set a message to the session, for display next time this form is shown.
|
|
*
|
|
* @param message the text of the message
|
|
* @param type Should be set to good, bad, or warning.
|
|
*/
|
|
public function sessionMessage($message, $type) {
|
|
Session::set("FormInfo.{$this->FormName()}.formError.message", $message);
|
|
Session::set("FormInfo.{$this->FormName()}.formError.type", $type);
|
|
}
|
|
|
|
public static function messageForForm( $formName, $message, $type ) {
|
|
Session::set("FormInfo.{$formName}.formError.message", $message);
|
|
Session::set("FormInfo.{$formName}.formError.type", $type);
|
|
}
|
|
|
|
public function clearMessage() {
|
|
$this->message = null;
|
|
Session::clear("FormInfo.{$this->FormName()}.errors");
|
|
Session::clear("FormInfo.{$this->FormName()}.formError");
|
|
Session::clear("FormInfo.{$this->FormName()}.data");
|
|
}
|
|
public function resetValidation() {
|
|
Session::clear("FormInfo.{$this->FormName()}.errors");
|
|
Session::clear("FormInfo.{$this->FormName()}.data");
|
|
}
|
|
|
|
/**
|
|
* Returns the DataObject that has given this form its data
|
|
* through {@link loadDataFrom()}.
|
|
*
|
|
* @return DataObject
|
|
*/
|
|
public function getRecord() {
|
|
return $this->record;
|
|
}
|
|
|
|
/**
|
|
* Get the legend value to be inserted into the
|
|
* <legend> element in Form.ss
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getLegend() {
|
|
return $this->legend;
|
|
}
|
|
|
|
/**
|
|
* Processing that occurs before a form is executed.
|
|
* This includes form validation, if it fails, we redirect back
|
|
* to the form with appropriate error messages.
|
|
* Triggered through {@link httpSubmission()}.
|
|
* Note that CSRF protection takes place in {@link httpSubmission()},
|
|
* if it fails the form data will never reach this method.
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public function validate(){
|
|
if($this->validator){
|
|
$errors = $this->validator->validate();
|
|
|
|
if($errors){
|
|
// Load errors into session and post back
|
|
$data = $this->getData();
|
|
Session::set("FormInfo.{$this->FormName()}.errors", $errors);
|
|
Session::set("FormInfo.{$this->FormName()}.data", $data);
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
const MERGE_DEFAULT = 0;
|
|
const MERGE_CLEAR_MISSING = 1;
|
|
const MERGE_IGNORE_FALSEISH = 2;
|
|
|
|
/**
|
|
* Load data from the given DataObject or array.
|
|
* It will call $object->MyField to get the value of MyField.
|
|
* If you passed an array, it will call $object[MyField].
|
|
* Doesn't save into dataless FormFields ({@link DatalessField}),
|
|
* as determined by {@link FieldList->dataFields()}.
|
|
*
|
|
* By default, if a field isn't set (as determined by isset()),
|
|
* its value will not be saved to the field, retaining
|
|
* potential existing values.
|
|
*
|
|
* Passed data should not be escaped, and is saved to the FormField instances unescaped.
|
|
* Escaping happens automatically on saving the data through {@link saveInto()}.
|
|
*
|
|
* @uses FieldList->dataFields()
|
|
* @uses FormField->setValue()
|
|
*
|
|
* @param array|DataObject $data
|
|
* @param int $mergeStrategy
|
|
* For every field, {@link $data} is interogated whether it contains a relevant property/key, and
|
|
* what that property/key's value is.
|
|
*
|
|
* By default, if {@link $data} does contain a property/key, the fields value is always replaced by {@link $data}'s
|
|
* value, even if that value is null/false/etc. Fields which don't match any property/key in {@link $data} are
|
|
* "left alone", meaning they retain any previous value.
|
|
*
|
|
* You can pass a bitmask here to change this behaviour.
|
|
*
|
|
* Passing CLEAR_MISSING means that any fields that don't match any property/key in
|
|
* {@link $data} are cleared.
|
|
*
|
|
* Passing IGNORE_FALSEISH means that any false-ish value in {@link $data} won't replace
|
|
* a field's value.
|
|
*
|
|
* For backwards compatibility reasons, this parameter can also be set to === true, which is the same as passing
|
|
* CLEAR_MISSING
|
|
*
|
|
* @param $fieldList An optional list of fields to process. This can be useful when you have a
|
|
* form that has some fields that save to one object, and some that save to another.
|
|
* @return Form
|
|
*/
|
|
public function loadDataFrom($data, $mergeStrategy = 0, $fieldList = null) {
|
|
if(!is_object($data) && !is_array($data)) {
|
|
user_error("Form::loadDataFrom() not passed an array or an object", E_USER_WARNING);
|
|
return $this;
|
|
}
|
|
|
|
// Handle the backwards compatible case of passing "true" as the second argument
|
|
if ($mergeStrategy === true) {
|
|
$mergeStrategy = self::MERGE_CLEAR_MISSING;
|
|
}
|
|
else if ($mergeStrategy === false) {
|
|
$mergeStrategy = 0;
|
|
}
|
|
|
|
// if an object is passed, save it for historical reference through {@link getRecord()}
|
|
if(is_object($data)) $this->record = $data;
|
|
|
|
// dont include fields without data
|
|
$dataFields = $this->fields->dataFields();
|
|
if($dataFields) foreach($dataFields as $field) {
|
|
$name = $field->getName();
|
|
|
|
// Skip fields that have been exlcuded
|
|
if($fieldList && !in_array($name, $fieldList)) continue;
|
|
|
|
// First check looks for (fieldname)_unchanged, an indicator that we shouldn't overwrite the field value
|
|
if(is_array($data) && isset($data[$name . '_unchanged'])) continue;
|
|
|
|
// Does this property exist on $data?
|
|
$exists = false;
|
|
// The value from $data for this field
|
|
$val = null;
|
|
|
|
if(is_object($data)) {
|
|
$exists = (
|
|
isset($data->$name) ||
|
|
$data->hasMethod($name) ||
|
|
($data->hasMethod('hasField') && $data->hasField($name))
|
|
);
|
|
|
|
if ($exists) {
|
|
$val = $data->__get($name);
|
|
}
|
|
}
|
|
else if(is_array($data)){
|
|
if(array_key_exists($name, $data)) {
|
|
$exists = true;
|
|
$val = $data[$name];
|
|
}
|
|
// If field is in array-notation we need to access nested data
|
|
else if(strpos($name,'[')) {
|
|
// First encode data using PHP's method of converting nested arrays to form data
|
|
$flatData = urldecode(http_build_query($data));
|
|
// Then pull the value out from that flattened string
|
|
preg_match('/' . addcslashes($name,'[]') . '=([^&]*)/', $flatData, $matches);
|
|
|
|
if (isset($matches[1])) {
|
|
$exists = true;
|
|
$val = $matches[1];
|
|
}
|
|
}
|
|
}
|
|
|
|
// save to the field if either a value is given, or loading of blank/undefined values is forced
|
|
if($exists){
|
|
if ($val != false || ($mergeStrategy & self::MERGE_IGNORE_FALSEISH) != self::MERGE_IGNORE_FALSEISH){
|
|
// pass original data as well so composite fields can act on the additional information
|
|
$field->setValue($val, $data);
|
|
}
|
|
}
|
|
else if(($mergeStrategy & self::MERGE_CLEAR_MISSING) == self::MERGE_CLEAR_MISSING){
|
|
$field->setValue($val, $data);
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Save the contents of this form into the given data object.
|
|
* It will make use of setCastedField() to do this.
|
|
*
|
|
* @param $dataObject The object to save data into
|
|
* @param $fieldList An optional list of fields to process. This can be useful when you have a
|
|
* form that has some fields that save to one object, and some that save to another.
|
|
*/
|
|
public function saveInto(DataObjectInterface $dataObject, $fieldList = null) {
|
|
$dataFields = $this->fields->saveableFields();
|
|
$lastField = null;
|
|
if($dataFields) foreach($dataFields as $field) {
|
|
// Skip fields that have been exlcuded
|
|
if($fieldList && is_array($fieldList) && !in_array($field->getName(), $fieldList)) continue;
|
|
|
|
|
|
$saveMethod = "save{$field->getName()}";
|
|
|
|
if($field->getName() == "ClassName"){
|
|
$lastField = $field;
|
|
}else if( $dataObject->hasMethod( $saveMethod ) ){
|
|
$dataObject->$saveMethod( $field->dataValue());
|
|
} else if($field->getName() != "ID"){
|
|
$field->saveInto($dataObject);
|
|
}
|
|
}
|
|
if($lastField) $lastField->saveInto($dataObject);
|
|
}
|
|
|
|
/**
|
|
* Get the submitted data from this form through
|
|
* {@link FieldList->dataFields()}, which filters out
|
|
* any form-specific data like form-actions.
|
|
* Calls {@link FormField->dataValue()} on each field,
|
|
* which returns a value suitable for insertion into a DataObject
|
|
* property.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getData() {
|
|
$dataFields = $this->fields->dataFields();
|
|
$data = array();
|
|
|
|
if($dataFields){
|
|
foreach($dataFields as $field) {
|
|
if($field->getName()) {
|
|
$data[$field->getName()] = $field->dataValue();
|
|
}
|
|
}
|
|
}
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Call the given method on the given field.
|
|
* This is used by Ajax-savvy form fields. By putting '&action=callfieldmethod' to the end
|
|
* of the form action, they can access server-side data.
|
|
* @param fieldName The name of the field. Can be overridden by $_REQUEST[fieldName]
|
|
* @param methodName The name of the field. Can be overridden by $_REQUEST[methodName]
|
|
*/
|
|
public function callfieldmethod($data) {
|
|
$fieldName = $data['fieldName'];
|
|
$methodName = $data['methodName'];
|
|
$fields = $this->fields->dataFields();
|
|
|
|
// special treatment needed for TableField-class and TreeDropdownField
|
|
if(strpos($fieldName, '[')) {
|
|
preg_match_all('/([^\[]*)/',$fieldName, $fieldNameMatches);
|
|
preg_match_all('/\[([^\]]*)\]/',$fieldName, $subFieldMatches);
|
|
$tableFieldName = $fieldNameMatches[1][0];
|
|
$subFieldName = $subFieldMatches[1][1];
|
|
}
|
|
|
|
if(isset($tableFieldName) && isset($subFieldName) && is_a($fields[$tableFieldName], 'TableField')) {
|
|
$field = $fields[$tableFieldName]->getField($subFieldName, $fieldName);
|
|
return $field->$methodName();
|
|
} else if(isset($fields[$fieldName])) {
|
|
return $fields[$fieldName]->$methodName();
|
|
} else {
|
|
user_error("Form::callfieldmethod() Field '$fieldName' not found", E_USER_ERROR);
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Return a rendered version of this form.
|
|
*
|
|
* This is returned when you access a form as $FormObject rather
|
|
* than <% control FormObject %>
|
|
*/
|
|
public function forTemplate() {
|
|
$return = $this->renderWith(array_merge(
|
|
(array)$this->getTemplate(),
|
|
array('Form')
|
|
));
|
|
|
|
// Now that we're rendered, clear message
|
|
$this->clearMessage();
|
|
|
|
return $return;
|
|
}
|
|
|
|
/**
|
|
* Return a rendered version of this form, suitable for ajax post-back.
|
|
* It triggers slightly different behaviour, such as disabling the rewriting of # links
|
|
*/
|
|
public function forAjaxTemplate() {
|
|
$view = new SSViewer(array(
|
|
$this->getTemplate(),
|
|
'Form'
|
|
));
|
|
|
|
return $view->dontRewriteHashlinks()->process($this);
|
|
}
|
|
|
|
/**
|
|
* Returns an HTML rendition of this form, without the <form> tag itself.
|
|
* Attaches 3 extra hidden files, _form_action, _form_name, _form_method, and _form_enctype. These are
|
|
* the attributes of the form. These fields can be used to send the form to Ajax.
|
|
*/
|
|
public function formHtmlContent() {
|
|
$this->IncludeFormTag = false;
|
|
$content = $this->forTemplate();
|
|
$this->IncludeFormTag = true;
|
|
|
|
$content .= "<input type=\"hidden\" name=\"_form_action\" id=\"" . $this->FormName . "_form_action\""
|
|
. " value=\"" . $this->FormAction() . "\" />\n";
|
|
$content .= "<input type=\"hidden\" name=\"_form_name\" value=\"" . $this->FormName() . "\" />\n";
|
|
$content .= "<input type=\"hidden\" name=\"_form_method\" value=\"" . $this->FormMethod() . "\" />\n";
|
|
$content .= "<input type=\"hidden\" name=\"_form_enctype\" value=\"" . $this->FormEncType() . "\" />\n";
|
|
|
|
return $content;
|
|
}
|
|
|
|
/**
|
|
* Render this form using the given template, and return the result as a string
|
|
* You can pass either an SSViewer or a template name
|
|
*/
|
|
public function renderWithoutActionButton($template) {
|
|
$custom = $this->customise(array(
|
|
"Actions" => "",
|
|
));
|
|
|
|
if(is_string($template)) $template = new SSViewer($template);
|
|
return $template->process($custom);
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets the button that was clicked. This should only be called by the Controller.
|
|
* @param funcName The name of the action method that will be called.
|
|
*/
|
|
public function setButtonClicked($funcName) {
|
|
$this->buttonClickedFunc = $funcName;
|
|
return $this;
|
|
}
|
|
|
|
public function buttonClicked() {
|
|
foreach($this->actions as $action) {
|
|
if($this->buttonClickedFunc == $action->actionName()) return $action;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the default button that should be clicked when another one isn't available
|
|
*/
|
|
public function defaultAction() {
|
|
if($this->hasDefaultAction && $this->actions)
|
|
return $this->actions->First();
|
|
}
|
|
|
|
/**
|
|
* Disable the default button.
|
|
* Ordinarily, when a form is processed and no action_XXX button is available, then the first button in the
|
|
* actions list will be pressed. However, if this is "delete", for example, this isn't such a good idea.
|
|
*/
|
|
public function disableDefaultAction() {
|
|
$this->hasDefaultAction = false;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Disable the requirement of a security token on this form instance. This security protects
|
|
* against CSRF attacks, but you should disable this if you don't want to tie
|
|
* a form to a session - eg a search form.
|
|
*
|
|
* Check for token state with {@link getSecurityToken()} and {@link SecurityToken->isEnabled()}.
|
|
*/
|
|
public function disableSecurityToken() {
|
|
$this->securityToken = new NullSecurityToken();
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Enable {@link SecurityToken} protection for this form instance.
|
|
*
|
|
* Check for token state with {@link getSecurityToken()} and {@link SecurityToken->isEnabled()}.
|
|
*/
|
|
public function enableSecurityToken() {
|
|
$this->securityToken = new SecurityToken();
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns the security token for this form (if any exists).
|
|
* Doesn't check for {@link securityTokenEnabled()}.
|
|
* Use {@link SecurityToken::inst()} to get a global token.
|
|
*
|
|
* @return SecurityToken|null
|
|
*/
|
|
public function getSecurityToken() {
|
|
return $this->securityToken;
|
|
}
|
|
|
|
/**
|
|
* Returns the name of a field, if that's the only field that the current controller is interested in.
|
|
* It checks for a call to the callfieldmethod action.
|
|
* This is useful for optimising your forms
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function single_field_required() {
|
|
if(self::current_action() == 'callfieldmethod') return $_REQUEST['fieldName'];
|
|
}
|
|
|
|
/**
|
|
* Return the current form action being called, if available.
|
|
* This is useful for optimising your forms
|
|
*/
|
|
public static function current_action() {
|
|
return self::$current_action;
|
|
}
|
|
|
|
/**
|
|
* Set the current form action. Should only be called by Controller.
|
|
*/
|
|
public static function set_current_action($action) {
|
|
self::$current_action = $action;
|
|
}
|
|
|
|
/**
|
|
* Compiles all CSS-classes.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function extraClass() {
|
|
return implode(array_unique($this->extraClasses), ' ');
|
|
}
|
|
|
|
/**
|
|
* Add a CSS-class to the form-container. If needed, multiple classes can
|
|
* be added by delimiting a string with spaces.
|
|
*
|
|
* @param string $class A string containing a classname or several class
|
|
* names delimited by a single space.
|
|
*/
|
|
public function addExtraClass($class) {
|
|
$classes = explode(' ', $class);
|
|
|
|
foreach($classes as $class) {
|
|
$value = trim($class);
|
|
|
|
$this->extraClasses[] = $value;
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Remove a CSS-class from the form-container. Multiple class names can
|
|
* be passed through as a space delimited string
|
|
*
|
|
* @param string $class
|
|
*/
|
|
public function removeExtraClass($class) {
|
|
$classes = explode(' ', $class);
|
|
$this->extraClasses = array_diff($this->extraClasses, $classes);
|
|
return $this;
|
|
}
|
|
|
|
public function debug() {
|
|
$result = "<h3>$this->class</h3><ul>";
|
|
foreach($this->fields as $field) {
|
|
$result .= "<li>$field" . $field->debug() . "</li>";
|
|
}
|
|
$result .= "</ul>";
|
|
|
|
if( $this->validator )
|
|
$result .= '<h3>'._t('Form.VALIDATOR', 'Validator').'</h3>' . $this->validator->debug();
|
|
|
|
return $result;
|
|
}
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// TESTING HELPERS
|
|
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
/**
|
|
* Test a submission of this form.
|
|
* @return SS_HTTPResponse the response object that the handling controller produces. You can interrogate this in
|
|
* your unit test.
|
|
*/
|
|
public function testSubmission($action, $data) {
|
|
$data['action_' . $action] = true;
|
|
|
|
return Director::test($this->FormAction(), $data, Controller::curr()->getSession());
|
|
|
|
//$response = $this->controller->run($data);
|
|
//return $response;
|
|
}
|
|
|
|
/**
|
|
* Test an ajax submission of this form.
|
|
* @return SS_HTTPResponse the response object that the handling controller produces. You can interrogate this in
|
|
* your unit test.
|
|
*/
|
|
public function testAjaxSubmission($action, $data) {
|
|
$data['ajax'] = 1;
|
|
return $this->testSubmission($action, $data);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @package forms
|
|
* @subpackage core
|
|
*/
|
|
class Form_FieldMap extends ViewableData {
|
|
protected $form;
|
|
|
|
public function __construct($form) {
|
|
$this->form = $form;
|
|
parent::__construct();
|
|
}
|
|
|
|
/**
|
|
* Ensure that all potential method calls get passed to __call(), therefore to dataFieldByName
|
|
*/
|
|
public function hasMethod($method) {
|
|
return true;
|
|
}
|
|
|
|
public function __call($method, $args = null) {
|
|
return $this->form->Fields()->fieldByName($method);
|
|
}
|
|
}
|