mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
406 lines
11 KiB
PHP
406 lines
11 KiB
PHP
<?php
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/**
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* This class is is responsible for adding objects to another object's has_many
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* and many_many relation, as defined by the {@link RelationList} passed to the
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* {@link GridField} constructor.
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*
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* Objects can be searched through an input field (partially matching one or
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* more fields).
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*
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* Selecting from the results will add the object to the relation.
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*
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* Often used alongside {@link GridFieldDeleteAction} for detaching existing
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* records from a relationship.
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*
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* For easier setup, have a look at a sample configuration in
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* {@link GridFieldConfig_RelationEditor}.
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*
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* @package forms
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* @subpackage fields-gridfield
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*/
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class GridFieldAddExistingAutocompleter
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implements GridField_HTMLProvider, GridField_ActionProvider, GridField_DataManipulator, GridField_URLHandler {
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/**
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* Which template to use for rendering
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*
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* @var string $itemClass
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*/
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protected $itemClass = 'GridFieldAddExistingAutocompleter';
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/**
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* The HTML fragment to write this component into
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*/
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protected $targetFragment;
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/**
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* @var SS_List
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*/
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protected $searchList;
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/**
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* Define column names which should be included in the search.
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* By default, they're searched with a {@link StartsWithFilter}.
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* To define custom filters, use the same notation as {@link DataList->filter()},
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* e.g. "Name:EndsWith".
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*
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* If multiple fields are provided, the filtering is performed non-exclusive.
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* If no fields are provided, tries to auto-detect fields from
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* {@link DataObject->searchableFields()}.
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*
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* The fields support "dot-notation" for relationships, e.g.
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* a entry called "Team.Name" will search through the names of
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* a "Team" relationship.
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*
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* @example
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* array(
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* 'Name',
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* 'Email:StartsWith',
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* 'Team.Name'
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* )
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*
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* @var Array
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*/
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protected $searchFields = array();
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/**
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* @var string SSViewer template to render the results presentation
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*/
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protected $resultsFormat = '$Title';
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/**
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* @var String Text shown on the search field, instructing what to search for.
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*/
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protected $placeholderText;
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/**
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* @var int
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*/
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protected $resultsLimit = 20;
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/**
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*
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* @param array $searchFields Which fields on the object in the list should be searched
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*/
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public function __construct($targetFragment = 'before', $searchFields = null) {
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$this->targetFragment = $targetFragment;
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$this->searchFields = (array)$searchFields;
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}
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/**
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*
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* @param GridField $gridField
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* @return string - HTML
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*/
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public function getHTMLFragments($gridField) {
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$searchState = $gridField->State->GridFieldSearchRelation;
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$dataClass = $gridField->getList()->dataClass();
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$forTemplate = new ArrayData(array());
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$forTemplate->Fields = new ArrayList();
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$searchFields = ($this->getSearchFields())
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? $this->getSearchFields()
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: $this->scaffoldSearchFields($dataClass);
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$value = $this->findSingleEntry($gridField, $searchFields, $searchState, $dataClass);
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$searchField = new TextField('gridfield_relationsearch',
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_t('GridField.RelationSearch', "Relation search"), $value);
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$searchField->setAttribute('data-search-url', Controller::join_links($gridField->Link('search')));
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$searchField->setAttribute('placeholder', $this->getPlaceholderText($dataClass));
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$searchField->addExtraClass('relation-search no-change-track');
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$findAction = new GridField_FormAction($gridField, 'gridfield_relationfind',
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_t('GridField.Find', "Find"), 'find', 'find');
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$findAction->setAttribute('data-icon', 'relationfind');
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$addAction = new GridField_FormAction($gridField, 'gridfield_relationadd',
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_t('GridField.LinkExisting', "Link Existing"), 'addto', 'addto');
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$addAction->setAttribute('data-icon', 'chain--plus');
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// If an object is not found, disable the action
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if(!is_int($gridField->State->GridFieldAddRelation)) {
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$addAction->setReadonly(true);
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}
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$forTemplate->Fields->push($searchField);
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$forTemplate->Fields->push($findAction);
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$forTemplate->Fields->push($addAction);
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return array(
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$this->targetFragment => $forTemplate->renderWith($this->itemClass)
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);
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}
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/**
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*
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* @param GridField $gridField
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* @return array
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*/
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public function getActions($gridField) {
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return array('addto', 'find');
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}
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/**
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* Manipulate the state to either add a new relation, or doing a small search
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*
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* @param GridField $gridField
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* @param string $actionName
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* @param string $arguments
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* @param string $data
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* @return string
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*/
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public function handleAction(GridField $gridField, $actionName, $arguments, $data) {
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switch($actionName) {
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case 'addto':
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if(isset($data['relationID']) && $data['relationID']){
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$gridField->State->GridFieldAddRelation = $data['relationID'];
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}
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$gridField->State->GridFieldSearchRelation = '';
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break;
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case 'find' && isset($data['autosuggest_search']):
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$gridField->State->GridFieldSearchRelation = $data['autosuggest_search'];
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break;
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}
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}
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/**
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* If an object ID is set, add the object to the list
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*
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* @param GridField $gridField
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* @param SS_List $dataList
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* @return SS_List
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*/
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public function getManipulatedData(GridField $gridField, SS_List $dataList) {
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if(!$gridField->State->GridFieldAddRelation) {
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return $dataList;
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}
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$objectID = Convert::raw2sql($gridField->State->GridFieldAddRelation);
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if($objectID) {
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$object = DataObject::get_by_id($dataList->dataclass(), $objectID);
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if($object) {
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$dataList->add($object);
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}
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}
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$gridField->State->GridFieldAddRelation = null;
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return $dataList;
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}
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/**
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*
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* @param GridField $gridField
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* @return array
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*/
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public function getURLHandlers($gridField) {
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return array(
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'search' => 'doSearch',
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);
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}
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/**
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* Returns a json array of a search results that can be used by for example Jquery.ui.autosuggestion
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*
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* @param GridField $gridField
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* @param SS_HTTPRequest $request
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*/
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public function doSearch($gridField, $request) {
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$dataClass = $gridField->getList()->dataClass();
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$allList = $this->searchList ? $this->searchList : DataList::create($dataClass);
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$searchFields = ($this->getSearchFields())
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? $this->getSearchFields()
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: $this->scaffoldSearchFields($dataClass);
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if(!$searchFields) {
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throw new LogicException(
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sprintf('GridFieldAddExistingAutocompleter: No searchable fields could be found for class "%s"',
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$dataClass));
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}
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$params = array();
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foreach($searchFields as $searchField) {
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$name = (strpos($searchField, ':') !== FALSE) ? $searchField : "$searchField:StartsWith";
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$params[$name] = $request->getVar('gridfield_relationsearch');
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}
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$results = $allList
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->subtract($gridField->getList())
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->filterAny($params)
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->sort(strtok($searchFields[0], ':'), 'ASC')
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->limit($this->getResultsLimit());
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$json = array();
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$originalSourceFileComments = Config::inst()->get('SSViewer', 'source_file_comments');
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Config::inst()->update('SSViewer', 'source_file_comments', false);
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foreach($results as $result) {
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$json[$result->ID] = html_entity_decode(SSViewer::fromString($this->resultsFormat)->process($result));
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}
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Config::inst()->update('SSViewer', 'source_file_comments', $originalSourceFileComments);
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return Convert::array2json($json);
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}
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/**
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* @param String
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*/
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public function setResultsFormat($format) {
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$this->resultsFormat = $format;
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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 getResultsFormat() {
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return $this->resultsFormat;
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}
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/**
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* Sets the base list instance which will be used for the autocomplete
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* search.
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*
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* @param SS_List $list
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*/
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public function setSearchList(SS_List $list) {
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$this->searchList = $list;
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}
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/**
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* @param Array
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*/
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public function setSearchFields($fields) {
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$this->searchFields = $fields;
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return $this;
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}
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/**
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* @return Array
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*/
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public function getSearchFields() {
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return $this->searchFields;
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}
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/**
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* Detect searchable fields and searchable relations.
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* Falls back to {@link DataObject->summaryFields()} if
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* no custom search fields are defined.
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*
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* @param String the class name
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* @return Array|null names of the searchable fields
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*/
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public function scaffoldSearchFields($dataClass) {
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$obj = singleton($dataClass);
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$fields = null;
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if($fieldSpecs = $obj->searchableFields()) {
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$customSearchableFields = $obj->stat('searchable_fields');
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foreach($fieldSpecs as $name => $spec) {
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if(is_array($spec) && array_key_exists('filter', $spec)) {
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// The searchableFields() spec defaults to PartialMatch,
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// so we need to check the original setting.
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// If the field is defined $searchable_fields = array('MyField'),
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// then default to StartsWith filter, which makes more sense in this context.
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if(!$customSearchableFields || array_search($name, $customSearchableFields)) {
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$filter = 'StartsWith';
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} else {
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$filter = preg_replace('/Filter$/', '', $spec['filter']);
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}
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$fields[] = "{$name}:{$filter}";
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} else {
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$fields[] = $name;
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}
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}
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}
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if (is_null($fields)) {
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if ($obj->hasDatabaseField('Title')) {
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$fields = array('Title');
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} elseif ($obj->hasDatabaseField('Name')) {
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$fields = array('Name');
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}
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}
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return $fields;
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}
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/**
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* @param String The class of the object being searched for
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* @return String
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*/
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public function getPlaceholderText($dataClass) {
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$searchFields = ($this->getSearchFields())
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? $this->getSearchFields()
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: $this->scaffoldSearchFields($dataClass);
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if($this->placeholderText) {
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return $this->placeholderText;
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} else {
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$labels = array();
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if($searchFields) foreach($searchFields as $searchField) {
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$label = singleton($dataClass)->fieldLabel($searchField);
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if($label) $labels[] = $label;
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}
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if($labels) {
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return _t(
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'GridField.PlaceHolderWithLabels',
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'Find {type} by {name}',
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array('type' => singleton($dataClass)->plural_name(), 'name' => implode(', ', $labels))
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);
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} else {
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return _t(
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'GridField.PlaceHolder', 'Find {type}',
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array('type' => singleton($dataClass)->plural_name())
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);
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}
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}
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}
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/**
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* @param String
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*/
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public function setPlaceholderText($text) {
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$this->placeholderText = $text;
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}
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/**
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* Gets the maximum number of autocomplete results to display.
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*
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* @return int
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*/
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public function getResultsLimit() {
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return $this->resultsLimit;
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}
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/**
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* @param int $limit
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*/
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public function setResultsLimit($limit) {
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$this->resultsLimit = $limit;
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}
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/**
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* This will provide a StartsWith search that only returns a value if we are
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* matching ONE object only. We wouldn't want to attach used any object to
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* the list.
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*
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* @param GridField $gridField
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* @param string $field
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* @param string $searchTerm
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* @param string $dataclass
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* @return string
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*/
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protected function findSingleEntry($gridField, $field, $searchTerm, $dataclass) {
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$fullList = DataList::create($dataclass);
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$searchTerm = Convert::raw2sql($searchTerm);
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if(!$searchTerm) {
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return;
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}
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$existingList = clone $gridField->getList();
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$searchResults = $fullList->subtract($existingList->limit(0))->filter($field.':StartsWith', $searchTerm);
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// If more than one, skip
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if($searchResults->count() != 1) {
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return '';
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}
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$gridField->State->GridFieldAddRelation = $searchResults->first()->ID;
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return $searchResults->first()->$field;
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}
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}
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