mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-08-28 13:36:12 +02:00
872 lines
23 KiB
PHP
872 lines
23 KiB
PHP
<?php
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/**
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* Represents a field in a form.
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*
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* A FieldList contains a number of FormField objects which make up the whole of a form.
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* In addition to single fields, FormField objects can be "composite", for example, the {@link TabSet}
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* field. Composite fields let us define complex forms without having to resort to custom HTML.
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*
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* <b>Subclassing</b>
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*
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* Define a {@link dataValue()} method that returns a value suitable for inserting into a single database field.
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* For example, you might tidy up the format of a date or currency field.
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* Define {@link saveInto()} to totally customise saving.
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* For example, data might be saved to the filesystem instead of the data record,
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* or saved to a component of the data record instead of the data record itself.
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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 FormField extends RequestHandler {
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/**
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* @var Form
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*/
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protected $form;
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protected $name, $title, $value ,$message, $messageType, $extraClass;
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/**
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* @var $description string Adds a "title"-attribute to the markup.
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* @todo Implement in all subclasses
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*/
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protected $description;
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/**
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* @var $extraClasses array Extra CSS-classes for the formfield-container
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*/
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protected $extraClasses;
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public $dontEscape;
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/**
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* @var $rightTitle string Used in SmallFieldHolder to force a right-aligned label, or in FieldHolder
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* to create contextual label.
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*/
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protected $rightTitle;
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/**
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* @var $leftTitle string Used in SmallFieldHolder() to force a left-aligned label with correct spacing.
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* Please use $title for FormFields rendered with FieldHolder().
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*/
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protected $leftTitle;
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/**
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* Stores a reference to the FieldList that contains this object.
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* @var FieldList
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*/
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protected $containerFieldList;
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/**
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* @var boolean
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*/
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protected $readonly = false;
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/**
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* @var boolean
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*/
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protected $disabled = false;
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/**
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* @var string custom validation message for the Field
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*/
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protected $customValidationMessage = "";
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/**
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* Name of the template used to render this form field. If not set, then
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* will look up the class ancestry for the first matching template where
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* the template name equals the class name.
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*
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* To explicitly use a custom template or one named other than the form
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* field see {@link setTemplate()}, {@link setFieldHolderTemplate()}
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*
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* @var string
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*/
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protected
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$template,
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$fieldHolderTemplate,
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$smallFieldHolderTemplate;
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/**
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* @var array All attributes on the form field (not the field holder).
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* Partially determined based on other instance properties, please use {@link getAttributes()}.
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*/
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protected $attributes = array();
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/**
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* Takes a fieldname and converts camelcase to spaced
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* words. Also resolves combined fieldnames with dot syntax
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* to spaced words.
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*
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* Examples:
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* - 'TotalAmount' will return 'Total Amount'
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* - 'Organisation.ZipCode' will return 'Organisation Zip Code'
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*
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* @param string $fieldName
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* @return string
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*/
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public static function name_to_label($fieldName) {
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if(strpos($fieldName, '.') !== false) {
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$parts = explode('.', $fieldName);
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$label = $parts[count($parts)-2] . ' ' . $parts[count($parts)-1];
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} else {
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$label = $fieldName;
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}
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$label = preg_replace("/([a-z]+)([A-Z])/","$1 $2", $label);
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return $label;
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}
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/**
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* Construct and return HTML tag.
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*/
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public static function create_tag($tag, $attributes, $content = null) {
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$preparedAttributes = '';
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foreach($attributes as $k => $v) {
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// Note: as indicated by the $k == value item here; the decisions over what to include in the attributes
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// can sometimes get finicky
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if(!empty($v) || $v === '0' || ($k == 'value' && $v !== null) ) {
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$preparedAttributes .= " $k=\"" . Convert::raw2att($v) . "\"";
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}
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}
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if($content || $tag != 'input') return "<$tag$preparedAttributes>$content</$tag>";
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else return "<$tag$preparedAttributes />";
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}
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/**
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* Create a new field.
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* @param name The internal field name, passed to forms.
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* @param title The field label.
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* @param value The value of the field.
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*/
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public function __construct($name, $title = null, $value = null) {
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$this->name = $name;
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$this->title = ($title === null) ? self::name_to_label($name) : $title;
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if($value !== NULL) $this->setValue($value);
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parent::__construct();
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}
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/**
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* Return a Link to this field
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*/
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public function Link($action = null) {
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return Controller::join_links($this->form->FormAction(), 'field/' . $this->name, $action);
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}
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/**
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* Returns the HTML ID of the field - used in the template by label tags.
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* The ID is generated as FormName_FieldName. All Field functions should ensure
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* that this ID is included in the field.
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*/
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public function ID() {
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$name = preg_replace('/(^-)|(-$)/', '', preg_replace('/[^A-Za-z0-9_-]+/', '-', $this->name));
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if($this->form) return $this->form->FormName() . '_' . $name;
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else return $name;
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}
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/**
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* Returns the field name - used by templates.
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*
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* @return string
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*/
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public function getName() {
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return $this->name;
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}
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/**
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* Returns the field message, used by form validation.
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* Use {@link setError()} to set this property.
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*
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* @return string
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*/
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public function Message() {
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return $this->message;
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}
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/**
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* Returns the field message type, used by form validation.
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* Arbitrary value which is mostly used for CSS classes
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* in the rendered HTML, e.g. "required".
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* Use {@link setError()} to set this property.
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*
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* @return string
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*/
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public function MessageType() {
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return $this->messageType;
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}
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/**
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* Returns the field value - used by templates.
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*/
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public function Value() {
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return $this->value;
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}
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/**
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* Method to save this form field into the given data object.
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* By default, makes use of $this->dataValue()
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*/
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public function saveInto(DataObjectInterface $record) {
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if($this->name) {
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$record->setCastedField($this->name, $this->dataValue());
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}
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}
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/**
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* Returns the field value suitable for insertion into the data object
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*/
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public function dataValue() {
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return $this->value;
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}
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/**
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* Returns the field label - used by templates.
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*/
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public function Title() {
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return $this->title;
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}
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public function setTitle($val) {
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$this->title = $val;
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return $this;
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}
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/**
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* Gets the contextual label than can be used for additional field description.
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* Can be shown to the right or under the field in question.
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*
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* @return string Contextual label text.
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*/
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public function RightTitle() {
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return $this->rightTitle;
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}
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/**
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* Sets the contextual label.
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*
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* @param $val string Text to set on the label.
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*/
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public function setRightTitle($val) {
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$this->rightTitle = $val;
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return $this;
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}
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public function LeftTitle() {
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return $this->leftTitle;
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}
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public function setLeftTitle($val) {
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$this->leftTitle = $val;
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return $this;
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}
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/**
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* Compiles all CSS-classes. Optionally includes a "nolabel"-class
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* if no title was set on the formfield.
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* Uses {@link Message()} and {@link MessageType()} to add validatoin
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* error classes which can be used to style the contained tags.
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*
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* @return string CSS-classnames
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*/
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public function extraClass() {
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$classes = array();
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$classes[] = $this->Type();
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if($this->extraClasses) $classes = array_merge($classes, array_values($this->extraClasses));
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// Allow customization of label and field tag positioning
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if(!$this->Title()) $classes[] = "nolabel";
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// Allow custom styling of any element in the container based
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// on validation errors, e.g. red borders on input tags.
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// CSS-Class needs to be different from the one rendered
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// through {@link FieldHolder()}
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if($this->Message()) $classes[] .= "holder-" . $this->MessageType();
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return implode(' ', $classes);
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}
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/**
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* Add a CSS-class to the formfield-container.
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*
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* @param $class String
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*/
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public function addExtraClass($class) {
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$this->extraClasses[$class] = $class;
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return $this;
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}
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/**
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* Remove a CSS-class from the formfield-container.
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*
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* @param $class String
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*/
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public function removeExtraClass($class) {
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$pos = array_search($class, $this->extraClasses);
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if($pos !== false) unset($this->extraClasses[$pos]);
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return $this;
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}
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/**
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* Set an HTML attribute on the field element, mostly an <input> tag.
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*
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* Some attributes are best set through more specialized methods, to avoid interfering with built-in behaviour:
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* - 'class': {@link addExtraClass()}
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* - 'title': {@link setDescription()}
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* - 'value': {@link setValue}
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* - 'name': {@link setName}
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*
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* CAUTION Doesn't work on most fields which are composed of more than one HTML form field:
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* AjaxUniqueTextField, CheckboxSetField, ComplexTableField, CompositeField, ConfirmedPasswordField,
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* CountryDropdownField, CreditCardField, CurrencyField, DateField, DatetimeField, FieldGroup, GridField,
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* HtmlEditorField, ImageField, ImageFormAction, InlineFormAction, ListBoxField, etc.
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*
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* @param string
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* @param string
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*/
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public function setAttribute($name, $value) {
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$this->attributes[$name] = $value;
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return $this;
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}
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/**
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* Get an HTML attribute defined by the field, or added through {@link setAttribute()}.
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* Caution: Doesn't work on all fields, see {@link setAttribute()}.
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*
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* @return string
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*/
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public function getAttribute($name) {
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$attrs = $this->getAttributes();
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return @$attrs[$name];
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}
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/**
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* @return array
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*/
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public function getAttributes() {
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$attrs = array(
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'type' => 'text',
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'name' => $this->getName(),
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'value' => $this->Value(),
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'class' => $this->extraClass(),
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'id' => $this->ID(),
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'disabled' => $this->isDisabled(),
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);
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return array_merge($attrs, $this->attributes);
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}
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/**
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* @param Array Custom attributes to process. Falls back to {@link getAttributes()}.
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* If at least one argument is passed as a string, all arguments act as excludes by name.
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* @return string HTML attributes, ready for insertion into an HTML tag
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*/
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public function getAttributesHTML($attrs = null) {
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$exclude = (is_string($attrs)) ? func_get_args() : null;
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if(!$attrs || is_string($attrs)) $attrs = $this->getAttributes();
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// Remove empty
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$attrs = array_filter((array)$attrs, function($v) {
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return ($v || $v === 0 || $v === '0');
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});
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// Remove excluded
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if($exclude) $attrs = array_diff_key($attrs, array_flip($exclude));
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// Create markkup
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$parts = array();
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foreach($attrs as $name => $value) {
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$parts[] = ($value === true) ? "{$name}=\"{$name}\"" : "{$name}=\"" . Convert::raw2att($value) . "\"";
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}
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return implode(' ', $parts);
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}
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/**
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* Returns a version of a title suitable for insertion into an HTML attribute
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*/
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public function attrTitle() {
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return Convert::raw2att($this->title);
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}
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/**
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* Returns a version of a title suitable for insertion into an HTML attribute
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*/
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public function attrValue() {
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return Convert::raw2att($this->value);
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}
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/**
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* Set the field value.
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* Returns $this.
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*/
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public function setValue($value) {
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$this->value = $value;
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return $this;
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}
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/**
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* Set the field name
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*/
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public function setName($name) {
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$this->name = $name;
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return $this;
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}
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/**
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* Set the container form.
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* This is called whenever you create a new form and put fields inside it, so that you don't
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* have to worry about linking the two.
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*/
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public function setForm($form) {
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$this->form = $form;
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return $this;
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}
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/**
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* Get the currently used form.
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*
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* @return Form
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*/
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public function getForm() {
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return $this->form;
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}
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/**
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* Return TRUE if security token protection is enabled on the parent {@link Form}.
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*
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* @return bool
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*/
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public function securityTokenEnabled() {
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$form = $this->getForm();
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if(!$form) return false;
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return $form->getSecurityToken()->isEnabled();
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}
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/**
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* Sets the error message to be displayed on the form field
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* Set by php validation of the form
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*/
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public function setError($message, $messageType) {
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$this->message = $message;
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$this->messageType = $messageType;
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return $this;
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}
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/**
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* Set the custom error message to show instead of the default
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* format of Please Fill In XXX. Different from setError() as
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* that appends it to the standard error messaging
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*
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* @param string Message for the error
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*/
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public function setCustomValidationMessage($msg) {
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$this->customValidationMessage = $msg;
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return $this;
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}
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/**
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* Get the custom error message for this form field. If a custom
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* message has not been defined then just return blank. The default
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* error is defined on {@link Validator}.
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*
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* @todo Should the default error message be stored here instead
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* @return string
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*/
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public function getCustomValidationMessage() {
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return $this->customValidationMessage;
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}
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/**
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* Set name of template (without path or extension).
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* Caution: Not consistently implemented in all subclasses,
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* please check the {@link Field()} method on the subclass for support.
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*
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* @param string
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*/
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public function setTemplate($template) {
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$this->template = $template;
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return $this;
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}
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/**
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* @return string
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*/
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public function getTemplate() {
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return $this->template;
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}
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/**
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* @return string
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*/
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public function getFieldHolderTemplate() {
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return $this->fieldHolderTemplate;
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}
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/**
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* Set name of template (without path or extension) for the holder,
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* which in turn is responsible for rendering {@link Field()}.
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*
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* Caution: Not consistently implemented in all subclasses,
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* please check the {@link Field()} method on the subclass for support.
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*
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* @param string
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*/
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public function setFieldHolderTemplate($template) {
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$this->fieldHolderTemplate = $template;
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return $this;
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}
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/**
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* @return string
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*/
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public function getSmallFieldHolderTemplate() {
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return $this->smallFieldHolderTemplate;
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}
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/**
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* Set name of template (without path or extension) for the small holder,
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* which in turn is responsible for rendering {@link Field()}.
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*
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* Caution: Not consistently implemented in all subclasses,
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* please check the {@link Field()} method on the subclass for support.
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*
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* @param string
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*/
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public function setSmallFieldHolderTemplate($template) {
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$this->smallFieldHolderTemplate = $template;
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return $this;
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}
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/**
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* Returns the form field - used by templates.
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* Although FieldHolder is generally what is inserted into templates, all of the field holder
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* templates make use of $Field. It's expected that FieldHolder will give you the "complete"
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* representation of the field on the form, whereas Field will give you the core editing widget,
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* such as an input tag.
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*
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* @param array $properties key value pairs of template variables
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* @return string
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*/
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public function Field($properties = array()) {
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$obj = ($properties) ? $this->customise($properties) : $this;
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return $obj->renderWith($this->getTemplates());
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}
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/**
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* Returns a "field holder" for this field - used by templates.
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*
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* Forms are constructed by concatenating a number of these field holders.
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* The default field holder is a label and a form field inside a div.
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* @see FieldHolder.ss
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*
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* @param array $properties key value pairs of template variables
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* @return string
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*/
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public function FieldHolder($properties = array()) {
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$obj = ($properties) ? $this->customise($properties) : $this;
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return $obj->renderWith($this->getFieldHolderTemplates());
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}
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/**
|
|
* Returns a restricted field holder used within things like FieldGroups.
|
|
*
|
|
* @param array $properties
|
|
*
|
|
* @return string
|
|
*/
|
|
public function SmallFieldHolder($properties = array()) {
|
|
$obj = ($properties) ? $this->customise($properties) : $this;
|
|
|
|
return $obj->renderWith($this->getSmallFieldHolderTemplates());
|
|
}
|
|
|
|
/**
|
|
* Returns an array of templates to use for rendering {@link FieldH}
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getTemplates() {
|
|
return $this->_templates($this->getTemplate());
|
|
}
|
|
|
|
/**
|
|
* Returns an array of templates to use for rendering {@link FieldHolder}
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getFieldHolderTemplates() {
|
|
return $this->_templates(
|
|
$this->getFieldHolderTemplate(),
|
|
'_holder'
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Returns an array of templates to use for rendering {@link SmallFieldHolder}
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getSmallFieldHolderTemplates() {
|
|
return $this->_templates(
|
|
$this->getSmallFieldHolderTemplate(),
|
|
'_holder_small'
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
* Generate an array of classname strings to use for rendering this form
|
|
* field into HTML
|
|
*
|
|
* @param string $custom custom template (if set)
|
|
* @param string $suffix template suffix
|
|
*
|
|
* @return array $stack a stack of
|
|
*/
|
|
private function _templates($custom = null, $suffix = null) {
|
|
$matches = array();
|
|
|
|
foreach(array_reverse(ClassInfo::ancestry($this)) as $className) {
|
|
$matches[] = $className . $suffix;
|
|
|
|
if($className == "FormField") break;
|
|
}
|
|
|
|
if($custom) array_unshift($matches, $custom);
|
|
|
|
return $matches;
|
|
}
|
|
|
|
/**
|
|
* Returns true if this field is a composite field.
|
|
* To create composite field types, you should subclass {@link CompositeField}.
|
|
*/
|
|
public function isComposite() {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns true if this field has its own data.
|
|
* Some fields, such as titles and composite fields, don't actually have any data. It doesn't
|
|
* make sense for data-focused methods to look at them. By overloading hasData() to return false,
|
|
* you can prevent any data-focused methods from looking at it.
|
|
*
|
|
* @see FieldList::collateDataFields()
|
|
*/
|
|
public function hasData() {
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @return boolean
|
|
*/
|
|
public function isReadonly() {
|
|
return $this->readonly;
|
|
}
|
|
|
|
/**
|
|
* Sets readonly-flag on form-field. Please use performReadonlyTransformation()
|
|
* to actually transform this instance.
|
|
* @param $bool boolean Setting "false" has no effect on the field-state.
|
|
*/
|
|
public function setReadonly($bool) {
|
|
$this->readonly = $bool;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* @return boolean
|
|
*/
|
|
public function isDisabled() {
|
|
return $this->disabled;
|
|
}
|
|
|
|
/**
|
|
* Sets disabed-flag on form-field. Please use performDisabledTransformation()
|
|
* to actually transform this instance.
|
|
* @param $bool boolean Setting "false" has no effect on the field-state.
|
|
*/
|
|
public function setDisabled($bool) {
|
|
$this->disabled = $bool;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns a readonly version of this field
|
|
*/
|
|
public function performReadonlyTransformation() {
|
|
$copy = $this->castedCopy('ReadonlyField');
|
|
$copy->setReadonly(true);
|
|
return $copy;
|
|
}
|
|
|
|
/**
|
|
* Return a disabled version of this field.
|
|
* Tries to find a class of the class name of this field suffixed with "_Disabled",
|
|
* failing that, finds a method {@link setDisabled()}.
|
|
*
|
|
* @return FormField
|
|
*/
|
|
public function performDisabledTransformation() {
|
|
$disabledClassName = $this->class . '_Disabled';
|
|
if(ClassInfo::exists($disabledClassName)) {
|
|
$clone = $this->castedCopy($disabledClassName);
|
|
} else {
|
|
$clone = clone $this;
|
|
$clone->setDisabled(true);
|
|
}
|
|
|
|
return $clone;
|
|
}
|
|
|
|
public function transform(FormTransformation $trans) {
|
|
return $trans->transform($this);
|
|
}
|
|
|
|
public function hasClass($class){
|
|
$patten = '/'.strtolower($class).'/i';
|
|
$subject = strtolower($this->class." ".$this->extraClass());
|
|
return preg_match($patten, $subject);
|
|
}
|
|
|
|
/**
|
|
* Returns the field type - used by templates.
|
|
* The field type is the class name with the word Field dropped off the end, all lowercase.
|
|
* It's handy for assigning HTML classes. Doesn't signify the <input type> attribute,
|
|
* see {link getAttributes()}.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function Type() {
|
|
return strtolower(preg_replace('/Field$/', '', $this->class));
|
|
}
|
|
|
|
public function createTag($tag, $attributes, $content = null) {
|
|
Deprecation::notice('3.1', 'Use FormField::create_tag()');
|
|
return self::create_tag($tag, $attributes, $content);
|
|
}
|
|
|
|
/**
|
|
* Abstract method each {@link FormField} subclass must implement,
|
|
* determines whether the field is valid or not based on the value.
|
|
* @todo Make this abstract.
|
|
*
|
|
* @param Validator
|
|
* @return boolean
|
|
*/
|
|
public function validate($validator) {
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Describe this field, provide help text for it.
|
|
* By default, renders as a <span class="description">
|
|
* underneath the form field.
|
|
*
|
|
* @return string Description
|
|
*/
|
|
public function setDescription($description) {
|
|
$this->description = $description;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
public function getDescription() {
|
|
return $this->description;
|
|
}
|
|
|
|
public function debug() {
|
|
return "$this->class ($this->name: $this->title : <font style='color:red;'>$this->message</font>)"
|
|
. " = $this->value";
|
|
}
|
|
|
|
/**
|
|
* This function is used by the template processor. If you refer to a field as a $ variable, it
|
|
* will return the $Field value.
|
|
*/
|
|
public function forTemplate() {
|
|
return $this->Field();
|
|
}
|
|
|
|
/**
|
|
* @uses Validator->fieldIsRequired()
|
|
* @return boolean
|
|
*/
|
|
public function Required() {
|
|
if($this->form && ($validator = $this->form->Validator)) {
|
|
return $validator->fieldIsRequired($this->name);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the FieldList that contains this field.
|
|
*
|
|
* @param FieldList $list
|
|
* @return FieldList
|
|
*/
|
|
public function setContainerFieldList($list) {
|
|
$this->containerFieldList = $list;
|
|
return $this;
|
|
}
|
|
|
|
public function rootFieldList() {
|
|
if(is_object($this->containerFieldList)) return $this->containerFieldList->rootFieldList();
|
|
else user_error("rootFieldList() called on $this->class object without a containerFieldList", E_USER_ERROR);
|
|
}
|
|
|
|
/**
|
|
* Returns another instance of this field, but "cast" to a different class.
|
|
* The logic tries to retain all of the instance properties,
|
|
* and may be overloaded by subclasses to set additional ones.
|
|
*
|
|
* Assumes the standard FormField parameter signature with
|
|
* its name as the only mandatory argument. Mainly geared towards
|
|
* creating *_Readonly or *_Disabled subclasses of the same type,
|
|
* or casting to a {@link ReadonlyField}.
|
|
*
|
|
* Does not copy custom field templates, since they probably won't apply to
|
|
* the new instance.
|
|
*
|
|
* @param String $classOrCopy Class name for copy, or existing copy instance to update
|
|
* @return FormField
|
|
*/
|
|
public function castedCopy($classOrCopy) {
|
|
$field = (is_object($classOrCopy)) ? $classOrCopy : new $classOrCopy($this->name);
|
|
$field
|
|
->setValue($this->value) // get value directly from property, avoid any conversions
|
|
->setForm($this->form)
|
|
->setTitle($this->Title())
|
|
->setLeftTitle($this->LeftTitle())
|
|
->setRightTitle($this->RightTitle())
|
|
->addExtraClass($this->extraClass())
|
|
->setDescription($this->getDescription());
|
|
|
|
// Only include built-in attributes, ignore anything
|
|
// set through getAttributes(), since those might change important characteristics
|
|
// of the field, e.g. its "type" attribute.
|
|
foreach($this->attributes as $k => $v) {
|
|
$field->setAttribute($k, $v);
|
|
}
|
|
$field->dontEscape = $this->dontEscape;
|
|
|
|
return $field;
|
|
}
|
|
|
|
}
|