silverstripe-cms/code/ModelAdmin.php

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<?php
/**
* Generates a three-pane UI for editing model classes,
* with an automatically generated search panel, tabular results
* and edit forms.
* Relies on data such as {@link DataObject::$db} and {@DataObject::getCMSFields()}
* to scaffold interfaces "out of the box", while at the same time providing
* flexibility to customize the default output.
*
* Add a route (note - this doc is not currently in sync with the code, need to update)
* <code>
* Director::addRules(50, array('admin/mymodel/$Class/$Action/$ID' => 'MyModelAdmin'));
* </code>
*
* @todo saving logic (should mostly use Form->saveInto() and iterate over relations)
* @todo ajax form loading and saving
* @todo ajax result display
* @todo relation formfield scaffolding (one tab per relation) - relations don't have DBField sublclasses, we do
* we define the scaffold defaults. can be ComplexTableField instances for a start.
* @todo has_many/many_many relation autocomplete field (HasManyComplexTableField doesn't work well with larger datasets)
*
* Long term TODOs:
* @todo Hook into RESTful interface on DataObjects (yet to be developed)
* @todo Permission control via datamodel and Form class
*
* @uses {@link SearchContext}
*
* @package cms
*/
abstract class ModelAdmin extends LeftAndMain {
/**
* List of all managed {@link DataObject}s in this interface.
*
* @var array
*/
protected static $managed_models = null;
public static $allowed_actions = array(
'add',
'edit',
'delete',
'import',
'renderimportform',
'handleList',
'handleItem',
'ImportForm'
);
/**
* @param string $collection_controller_class Override for controller class
*/
protected static $collection_controller_class = "ModelAdmin_CollectionController";
/**
* @param string $collection_controller_class Override for controller class
*/
protected static $record_controller_class = "ModelAdmin_RecordController";
/**
* Forward control to the default action handler
*/
public static $url_handlers = array(
'$Action' => 'handleAction'
);
/**
* Model object currently in manipulation queue. Used for updating Link to point
* to the correct generic data object in generated URLs.
*
* @var string
*/
private $currentModel = false;
/**
* List of all {@link DataObject}s which can be imported through
* a subclass of {@link BulkLoader} (mostly CSV data).
* By default {@link CsvBulkLoader} is used, assuming a standard mapping
* of column names to {@link DataObject} properties/relations.
*
* @var array
*/
protected static $model_importers = null;
/**
* Amount of results showing on a single page.
*
* @var int
*/
protected static $page_length = 30;
/**
* Initialize the model admin interface. Sets up embedded jquery libraries and requisite plugins.
*
* @todo remove reliance on urlParams
*/
public function init() {
parent::init();
// security check for valid models
if(isset($this->urlParams['Action']) && !in_array($this->urlParams['Action'], $this->getManagedModels())) {
//user_error('ModelAdmin::init(): Invalid Model class', E_USER_ERROR);
}
Requirements::css('cms/css/ModelAdmin.css'); // standard layout formatting for management UI
Requirements::css('cms/css/silverstripe.tabs.css'); // follows the jQuery UI theme conventions
Requirements::javascript('jsparty/jquery/jquery.js');
Requirements::javascript('jsparty/jquery/plugins/livequery/jquery.livequery.js');
Requirements::javascript('jsparty/jquery/ui/ui.core.js');
Requirements::javascript('jsparty/jquery/ui/ui.tabs.js');
Requirements::javascript('jsparty/jquery/plugins/form/jquery.form.js');
Requirements::javascript('jsparty/jquery/plugins/effen/jquery.fn.js');
Requirements::javascript('jsparty/jquery/jquery_improvements.js');
Requirements::javascript('cms/javascript/ModelAdmin.js');
}
/**
* overwrite the static page_length of the admin panel,
* should be called in the project _config file.
*/
static function set_page_length($length){
self::$page_length = $length;
}
/**
* Return the static page_length of the admin, default as 30
*/
static function get_page_length(){
return self::$page_length;
}
/**
* Add mappings for generic form constructors to automatically delegate to a scaffolded form object.
*/
function defineMethods() {
parent::defineMethods();
foreach($this->getManagedModels() as $ClassName) {
$this->addWrapperMethod($ClassName, 'bindModelController');
}
}
/**
* Return default link to this controller. This assfaced method is abstract, so we can't
* get rid of it.
*
* @todo extract full URL binding from Director::addRules so that it's not tied to 'admin/crm'
* @todo is there a way of removing the dependency on this method from the Form?
*
* @return string
*/
public function Link() {
return Controller::join_links(Director::absoluteBaseURL(), 'admin/crm/');
}
/**
* Base scaffolding method for returning a generic model instance.
*/
public function bindModelController($model, $request = null) {
$class = $this->stat('collection_controller_class');
return new $class($this, $model);
}
/**
* This method can be overloaded to specify the UI by which the search class is chosen.
*
* It can create a tab strip or a dropdown. The dropdown is useful when there are a large number of classes.
* By default, it will show a tabs for 1-3 classes, and a dropdown for 4 or more classes.
*
* @return String: 'tabs' or 'dropdown'
*/
public function SearchClassSelector() {
return sizeof($this->getManagedModels()) > 3 ? 'dropdown' : 'tabs';
}
/**
* Allows to choose which record needs to be created.
*
* @return Form
*/
protected function ManagedModelsSelect() {
$models = $this->getManagedModels();
$modelMap = array();
foreach($models as $modelName) {
if ($this->hasMethod('alternatePermissionCheck')) {
if ($this->alternatePermissionCheck()) {
$modelMap[$modelName] = singleton($modelName)->singular_name();
}
}
else {
if(singleton($modelName)->canCreate(Member::currentUser())) $modelMap[$modelName] = singleton($modelName)->singular_name();
}
}
$form = new Form(
$this,
"ManagedModelsSelect",
new FieldSet(
new DropdownField('ClassName', 'Type', $modelMap)
),
new FieldSet(
new FormAction('add', _t('GenericDataAdmin.CREATE'))
)
);
$form->setFormMethod('get');
return $form;
}
/**
* Generate a CSV import form with an option to select
* one of the "importable" models specified through {@link self::$model_importers}.
*
* @return Form
*/
public function ImportForm() {
$models = $this->getManagedModels();
$modelMap = array();
$importers = $this->getModelImporters();
if(!$importers) return false;
foreach($importers as $modelName => $importerClass) {
$modelMap[$modelName] = singleton($modelName)->singular_name();
}
$fields = new FieldSet(
new DropdownField('ClassName', 'Type', $modelMap),
new FileField('_CsvFile', false)
);
// get HTML specification for each import (column names etc.)
foreach($importers as $modelName => $importerClass) {
$importer = new $importerClass($modelName);
$spec = $importer->getImportSpec();
$specFields = new DataObjectSet();
foreach($spec['fields'] as $name => $desc) {
$specFields->push(new ArrayData(array('Name' => $name, 'Description' => $desc)));
}
$specRelations = new DataObjectSet();
foreach($spec['relations'] as $name => $desc) {
$specRelations->push(new ArrayData(array('Name' => $name, 'Description' => $desc)));
}
$specHTML = $this->customise(array(
'ModelName' => $modelName,
'Fields' => $specFields,
'Relations' => $specRelations,
))->renderWith('ModelAdmin_ImportSpec');
$fields->push(new LiteralField("SpecFor{$modelName}", $specHTML));
}
$actions = new FieldSet(
new FormAction('import', _t('ModelAdmin.IMPORT', 'Import from CSV'))
);
$form = new Form(
$this,
"ImportForm",
$fields,
$actions
);
return $form;
}
function add($data, $form, $request) {
$className = $request->requestVar("ClassName");
return $this->$className()->add($request);
}
/**
* Imports the submitted CSV file based on specifications given in
* {@link self::model_importers}.
* Redirects back with a success/failure message.
*
* @todo Figure out ajax submission of files via jQuery.form plugin
*
* @param unknown_type $data
* @param unknown_type $form
* @param unknown_type $request
*/
function import($data, $form, $request) {
$importers = $this->getModelImporters();
$importerClass = $importers[$data['ClassName']];
$loader = new $importerClass($data['ClassName']);
$resultsCount = $loader->load($_FILES['_CsvFile']['tmp_name']);
//$resultsCount = ($results) ? $results->Count() : 0;
Session::setFormMessage('Form_ImportForm', "Loaded {$resultsCount} items", 'good');
Director::redirect($_SERVER['HTTP_REFERER'] . '#Form_ImportForm_holder');
}
/**
*
* @uses {@link SearchContext}
* @uses {@link SearchFilter}
* @return Form
*/
protected function getSearchForms() {
$modelClasses = $this->getManagedModels();
$forms = new DataObjectSet();
foreach($modelClasses as $modelClass) {
$this->$modelClass()->SearchForm();
$forms->push(new ArrayData(array(
'Form' => $this->$modelClass()->SearchForm(),
'Title' => singleton($modelClass)->singular_name(),
'ClassName' => $modelClass,
)));
}
return $forms;
}
/**
* @return array
*/
protected function getManagedModels() {
$models = $this->stat('managed_models');
if(!count($models)) user_error('ModelAdmin::getManagedModels():
You need to specify at least one DataObject subclass in $managed_models', E_USER_ERROR);
return $models;
}
/**
* Returns all importers defined in {@link self::$model_importers}.
* If none are defined, we fall back to {@link self::managed_models}
* with a default {@link CsvBulkLoader} class. In this case the column names of the first row
* in the CSV file are assumed to have direct mappings to properties on the object.
*
* @return array
*/
protected function getModelImporters() {
$importers = $this->stat('model_importers');
// fallback to all defined models if not explicitly defined
if(is_null($importers)) {
$models = $this->getManagedModels();
foreach($models as $modelName) $importers[$modelName] = 'CsvBulkLoader';
}
return $importers;
}
}
/**
* Handles a managed model class and provides default collection filtering behavior.
*
*/
class ModelAdmin_CollectionController extends Controller {
public $parentController;
protected $modelClass;
static $url_handlers = array(
'$Action' => 'handleActionOrID'
);
function __construct($parent, $model) {
$this->parentController = $parent;
$this->modelClass = $model;
}
/**
* Appends the model class to the URL.
*
* @return unknown
*/
function Link() {
return Controller::join_links($this->parentController->Link(), "$this->modelClass");
}
/**
* Return the class name of the model being managed.
*
* @return unknown
*/
function getModelClass() {
return $this->modelClass;
}
/**
* Delegate to different control flow, depending on whether the
* URL parameter is a number (record id) or string (action).
*
* @param unknown_type $request
* @return unknown
*/
function handleActionOrID($request) {
if (is_numeric($request->param('Action'))) {
return $this->handleID($request);
} else {
return $this->handleAction($request);
}
}
/**
* Delegate to the RecordController if a valid numeric ID appears in the URL
* segment.
*
* @param HTTPRequest $request
* @return RecordController
*/
function handleID($request) {
$class = $this->parentController->stat('record_controller_class');
return new $class($this, $request);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Get a search form for a single {@link DataObject} subclass.
*
* @return Form
*/
public function SearchForm() {
$context = singleton($this->modelClass)->getDefaultSearchContext();
$fields = $context->getSearchFields();
$columnSelectionField = $this->ColumnSelectionField();
$fields->push($columnSelectionField);
$form = new Form($this, "SearchForm",
$fields,
new FieldSet(
new FormAction('search', _t('MemberTableField.SEARCH')),
$clearAction = new ResetFormAction('clearsearch', _t('ModelAdmin.CLEAR_SEARCH','Clear Search'))
)
);
//$form->setFormAction(Controller::join_links($this->Link(), "search"));
$form->setFormMethod('get');
$form->setHTMLID("Form_SearchForm_" . $this->modelClass);
$clearAction->useButtonTag = true;
$clearAction->addExtraClass('minorAction');
return $form;
}
/**
* Give the flexibilility to show variouse combination of columns in the search result table
*/
public function ColumnSelectionField() {
$model = singleton($this->modelClass);
$source = $model->summaryFields();
$value = array();
if($source) foreach ($source as $fieldName => $label){
$value[] = $fieldName;
}
// Reorder the source so that you read items down the column and then across
$columnisedSource = array();
$keys = array_keys($source);
$midPoint = ceil(sizeof($source)/2);
for($i=0;$i<$midPoint;$i++) {
$key1 = $keys[$i];
$columnisedSource[$key1] = $source[$key1];
// If there are an odd number of items, the last item will be unset
if(isset($keys[$i+$midPoint])) {
$key2 = $keys[$i+$midPoint];
$columnisedSource[$key2] = $source[$key2];
}
}
$checkboxes = new CheckboxSetField("ResultAssembly", false, $columnisedSource, $value);
$field = new CompositeField(
new LiteralField(
"ToggleResultAssemblyLink",
sprintf("<a class=\"form_frontend_function toggle_result_assembly\" href=\"#\">%s</a>",
_t('ModelAdmin.CHOOSE_COLUMNS', 'Select result columns...')
)
),
$checkboxesBlock = new CompositeField(
$checkboxes,
new LiteralField("ClearDiv", "<div class=\"clear\"></div>"),
new LiteralField("TickAllAssemblyLink","<a class=\"form_frontend_function tick_all_result_assembly\" href=\"#\">select all</a>"),
new LiteralField("UntickAllAssemblyLink","<a class=\"form_frontend_function untick_all_result_assembly\" href=\"#\">select none</a>")
)
);
$field -> setExtraClass("ResultAssemblyBlock");
$checkboxesBlock -> setExtraClass("hidden");
return $field;
}
/**
* Action to render a data object collection, using the model context to provide filters
* and paging.
*
* @return string
*/
function search($request, $form) {
// Get the results form to be rendered
$resultsForm = $this->ResultsForm($form->getData());
// Before rendering, let's get the total number of results returned
$tableField = $resultsForm->Fields()->fieldByName($this->modelClass);
$numResults = $tableField->TotalCount();
if($numResults) {
return new HTTPResponse($resultsForm->forTemplate(), 200, "Your search found $numResults matching items");
} else {
return new HTTPResponse($resultsForm->forTemplate(), 404, "Your search didn't return any matching items");
}
}
/**
* Gets the search query generated on the SearchContext from
* {@link DataObject::getDefaultSearchContext()},
* and the current GET parameters on the request.
*
* @return SQLQuery
*/
function getSearchQuery($searchCriteria) {
$context = singleton($this->modelClass)->getDefaultSearchContext();
return $context->getQuery($searchCriteria);
}
function getResultColumns($searchCriteria) {
$model = singleton($this->modelClass);
$summaryFields = $model->summaryFields();
$resultAssembly = $searchCriteria['ResultAssembly'];
if(!is_array($resultAssembly)) {
$explodedAssembly = split(' *, *', $resultAssembly);
$resultAssembly = array();
foreach($explodedAssembly as $item) $resultAssembly[$item] = true;
}
return array_intersect_key($summaryFields, $resultAssembly);
}
/**
* Shows results from the "search" action in a TableListField.
*
* @return Form
*/
function ResultsForm($searchCriteria) {
if($searchCriteria instanceof HTTPRequest) $searchCriteria = $searchCriteria->getVars();
$summaryFields = $this->getResultColumns($searchCriteria);
$tf = new TableListField(
$this->modelClass,
$this->modelClass,
$summaryFields
);
$tf->setCustomQuery($this->getSearchQuery($searchCriteria));
$tf->setPageSize($this->parentController->stat('page_length'));
$tf->setShowPagination(true);
// @todo Remove records that can't be viewed by the current user
$tf->setPermissions(array_merge(array('view','export'), TableListField::permissions_for_object($this->modelClass)));
$url = '<a href=\"' . $this->Link() . '/$ID/edit\">$value</a>';
$tf->setFieldFormatting(array_combine(array_keys($summaryFields), array_fill(0,count($summaryFields), $url)));
// implemented as a form to enable further actions on the resultset
// (serverside sorting, export as CSV, etc)
$form = new Form(
$this,
'ResultsForm',
new FieldSet(
new HeaderField(_t('ModelAdmin.SEARCHRESULTS','Search Results'), 2),
$tf
),
new FieldSet()
);
// Include the search criteria on the results form URL, but not dodgy variables like those below
$filteredCriteria = $searchCriteria;
unset($filteredCriteria['ctf']);
unset($filteredCriteria['url']);
unset($filteredCriteria['action_search']);
$form->setFormAction($this->Link() . '/ResultsForm?' . http_build_query($filteredCriteria));
return $form;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Create a new model record.
*
* @param unknown_type $request
* @return unknown
*/
function add($request) {
return new HTTPResponse($this->AddForm()->forAjaxTemplate(), 200, "Fill out this form to add a $this->modelClass to the database.");
}
/**
* Returns a form for editing the attached model
*/
public function AddForm() {
$newRecord = new $this->modelClass();
if($newRecord->hasMethod('getCMSAddFormFields')) {
$fields = $newRecord->getCMSAddFormFields();
} else {
$fields = $newRecord->getCMSFields();
}
$validator = ($newRecord->hasMethod('getCMSValidator')) ? $newRecord->getCMSValidator() : null;
$actions = new FieldSet(new FormAction("doCreate", "Add"));
$form = new Form($this, "AddForm", $fields, $actions, $validator);
return $form;
}
function doCreate($data, $form, $request) {
$className = $this->getModelClass();
$model = new $className();
// We write before saveInto, since this will let us save has-many and many-many relationships :-)
$model->write();
$form->saveInto($model);
$model->write();
Director::redirect(Controller::join_links($this->Link(), $model->ID , 'edit'));
}
}
/**
* Handles operations on a single record from a managed model.
*
* @todo change the parent controller varname to indicate the model scaffolding functionality in ModelAdmin
*/
class ModelAdmin_RecordController extends Controller {
protected $parentController;
protected $currentRecord;
static $allowed_actions = array('edit', 'view', 'EditForm', 'ViewForm');
function __construct($parentController, $request) {
$this->parentController = $parentController;
$modelName = $parentController->getModelClass();
$recordID = $request->param('Action');
$this->currentRecord = DataObject::get_by_id($modelName, $recordID);
}
/**
* Link fragment - appends the current record ID to the URL.
*
*/
function Link() {
return Controller::join_links($this->parentController->Link(), "/{$this->currentRecord->ID}");
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Edit action - shows a form for editing this record
*/
function edit($request) {
if ($this->currentRecord) {
if(Director::is_ajax()) {
return new HTTPResponse($this->EditForm()->forAjaxTemplate(), 200, "Loaded '" . $this->currentRecord->Title . "' for editing.");
} else {
// This is really quite ugly; to fix will require a change in the way that customise() works. :-(
return $this->parentController->parentController->customise(array(
'Right' => $this->parentController->parentController->customise(array(
'EditForm' => $this->EditForm()
))->renderWith('ModelAdmin_right')
))->renderWith(array('ModelAdmin','LeftAndMain'));
return ;
}
} else {
return "I can't find that item";
}
}
/**
* Returns a form for editing the attached model
*/
public function EditForm() {
$fields = $this->currentRecord->getCMSFields();
$fields->push(new HiddenField("ID"));
$validator = ($this->currentRecord->hasMethod('getCMSValidator')) ? $this->currentRecord->getCMSValidator() : null;
$actions = new FieldSet(
new FormAction("doSave", "Save")
);
if($this->currentRecord->canDelete(Member::currentUser())) {
$actions->insertFirst($deleteAction = new FormAction('doDelete', 'Delete'));
$deleteAction->addExtraClass('delete');
}
$actions->insertFirst(new FormAction("goBack", "Back"));
$form = new Form($this, "EditForm", $fields, $actions, $validator);
$form->loadDataFrom($this->currentRecord);
return $form;
}
/**
* Postback action to save a record
*
* @param array $data
* @param Form $form
* @param HTTPRequest $request
* @return mixed
*/
function doSave($data, $form, $request) {
$form->saveInto($this->currentRecord);
$this->currentRecord->write();
// Behaviour switched on ajax.
if(Director::is_ajax()) {
return $this->edit($request);
} else {
Director::redirectBack();
}
}
/**
* Delete the current record
*/
public function doDelete($data, $form, $request) {
if($this->currentRecord->canDelete(Member::currentUser())) {
$this->currentRecord->delete();
Director::redirect($this->parentController->Link());
}
else Director::redirectBack();
return;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Renders the record view template.
*
* @param HTTPRequest $request
* @return mixed
*/
function view($request) {
if ($this->currentRecord) {
$form = $this->ViewForm();
return $form->forAjaxTemplate();
} else {
return "I can't find that item";
}
}
/**
* Returns a form for viewing the attached model
*
* @return Form
*/
public function ViewForm() {
$fields = $this->currentRecord->getCMSFields();
$form = new Form($this, "EditForm", $fields, new FieldSet());
$form->loadDataFrom($this->currentRecord);
$form->makeReadonly();
return $form;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
function index() {
Director::redirect(Controller::join_links($this->Link(), 'edit'));
}
}
?>