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executable file 294 lines (263 sloc) 8.849 kB
<?php
/**
* This class is is responsible for adding objects to another object's has_many and many_many relation,
* as defined by the {@link RelationList} passed to the GridField constructor.
* Objects can be searched through an input field (partially matching one or more fields).
* Selecting from the results will add the object to the relation.
* Often used alongside {@link GridFieldRelationDelete} for detaching existing records from a relatinship.
* For easier setup, have a look at a sample configuration in {@link GridFieldConfig_RelationEditor}.
*/
class GridFieldRelationAdd implements GridField_HTMLProvider, GridField_ActionProvider, GridField_DataManipulator, GridField_URLHandler {
/**
* Which template to use for rendering
*
* @var string $itemClass
*/
protected $itemClass = 'GridFieldRelationAdd';
/**
* Which columns that should be used for doing a "StartsWith" search.
* If multiple fields are provided, the filtering is performed non-exclusive.
* If no fields are provided, tries to auto-detect a "Title" or "Name" field,
* and falls back to the first textual field defined on the object.
*
* @var Array
*/
protected $searchFields = array();
/**
* @var string SSViewer template to render the results presentation
*/
protected $resultsFormat = '$Title';
/**
* @var String Text shown on the search field, instructing what to search for.
*/
protected $placeholderText;
/**
*
* @param array $searchFields Which fields on the object in the list should be searched
*/
public function __construct($searchFields = null) {
$this->searchFields = (array)$searchFields;
}
/**
*
* @param GridField $gridField
* @return string - HTML
*/
public function getHTMLFragments($gridField) {
$searchState = $gridField->State->GridFieldSearchRelation;
$dataClass = $gridField->getList()->dataClass();
$forTemplate = new ArrayData(array());
$forTemplate->Fields = new ArrayList();
$searchFields = ($this->getSearchFields()) ? $this->getSearchFields() : $this->scaffoldSearchFields($dataClass);
$value = $this->findSingleEntry($gridField, $searchFields, $searchState, $dataClass);
$searchField = new TextField('gridfield_relationsearch', _t('GridField.RelationSearch', "Relation search"), $value);
// Apparently the data-* needs to be double qouted for the jQuery.meta data plugin
$searchField->setAttribute('data-search-url', '\''.Controller::join_links($gridField->Link('search').'\''));
$searchField->setAttribute('placeholder', $this->getPlaceholderText($dataClass));
$searchField->addExtraClass('relation-search');
$findAction = new GridField_FormAction($gridField, 'gridfield_relationfind', _t('GridField.Find', "Find"), 'find', 'find');
$findAction->setAttribute('data-icon', 'relationfind');
$addAction = new GridField_FormAction($gridField, 'gridfield_relationadd', _t('GridField.LinkExisting', "Link Exisiting"), 'addto', 'addto');
$addAction->setAttribute('data-icon', 'chain--plus');
// If an object is not found, disable the action
if(!is_int($gridField->State->GridFieldAddRelation)) {
$addAction->setReadonly(true);
}
$forTemplate->Fields->push($searchField);
$forTemplate->Fields->push($findAction);
$forTemplate->Fields->push($addAction);
return array('before' => $forTemplate->renderWith($this->itemClass));
}
/**
*
* @param GridField $gridField
* @return array
*/
public function getActions($gridField) {
return array('addto', 'find');
}
/**
* Manipulate the state to either add a new relation, or doing a small search
*
* @param GridField $gridField
* @param string $actionName
* @param string $arguments
* @param string $data
* @return string
*/
public function handleAction(GridField $gridField, $actionName, $arguments, $data) {
switch($actionName) {
case 'addto':
if(isset($data['relationID']) && $data['relationID']){
$gridField->State->GridFieldAddRelation = $data['relationID'];
}
$gridField->State->GridFieldSearchRelation = '';
break;
case 'find' && isset($data['autosuggest_search']):
$gridField->State->GridFieldSearchRelation = $data['autosuggest_search'];
break;
}
}
/**
* If an object ID is set, add the object to the list
*
* @param GridField $gridField
* @param SS_List $dataList
* @return SS_List
*/
public function getManipulatedData(GridField $gridField, SS_List $dataList) {
if(!$gridField->State->GridFieldAddRelation) {
return $dataList;
}
$objectID = Convert::raw2sql($gridField->State->GridFieldAddRelation);
if($objectID) {
$object = DataObject::get_by_id($dataList->dataclass(), $objectID);
if($object) {
$dataList->add($object);
}
}
$gridField->State->GridFieldAddRelation = null;
return $dataList;
}
/**
*
* @param GridField $gridField
* @return array
*/
public function getURLHandlers($gridField) {
return array(
'search/$ID' => 'doSearch',
);
}
/**
* Returns a json array of a search results that can be used by for example Jquery.ui.autosuggestion
*
* @param GridField $gridField
* @param SS_HTTPRequest $request
*/
public function doSearch($gridField, $request) {
$dataClass = $gridField->getList()->dataClass();
$allList = DataList::create($dataClass);
$filters = array();
$stmts = array();
$searchFields = ($this->getSearchFields()) ? $this->getSearchFields() : $this->scaffoldSearchFields($dataClass);
if(!$searchFields) {
throw new LogicException(
sprintf('GridFieldRelationAdd: No searchable fields could be found for class "%s"', $dataClass)
);
}
// TODO Replace with DataList->filterAny() once it correctly supports OR connectives
foreach($searchFields as $searchField) {
$stmts[] .= sprintf('"%s" LIKE \'%s%%\'', $searchField, $request->param('ID'));
}
$results = $allList->where(implode(' OR ', $stmts))->subtract($gridField->getList());
$results->sort($searchFields[0], 'ASC');
$json = array();
foreach($results as $result) {
$json[$result->ID] = SSViewer::fromString($this->resultsFormat)->process($result);
}
return Convert::array2json($json);
}
/**
* @param String
*/
public function setResultsFormat($format) {
$this->resultsFormat = $format;
return $this;
}
/**
* @return String
*/
public function getResultsFormat() {
return $this->resultsFormat;
}
/**
* @param Array
*/
public function setSearchFields($fields) {
$this->searchFields = $fields;
return $this;
}
/**
* @return Array
*/
public function getSearchFields() {
return $this->searchFields;
}
/**
* Detect searchable
*
* @param String
* @return Array
*/
protected function scaffoldSearchFields($dataClass) {
$obj = singleton($dataClass);
if($obj->hasDatabaseField('Title')) {
return array('Title');
} else if($obj->hasDatabaseField('Name')) {
return array('Name');
} else {
return null;
}
}
/**
* @param String The class of the object being searched for
* @return String
*/
public function getPlaceholderText($dataClass) {
$searchFields = ($this->getSearchFields()) ? $this->getSearchFields() : $this->scaffoldSearchFields($dataClass);
if($this->placeholderText) {
return $this->placeholderText;
} else {
$labels = array();
foreach($searchFields as $searchField) {
$label = singleton($dataClass)->fieldLabel($searchField);
if($label) $labels[] = $label;
}
if($labels) {
return sprintf(
_t('GridField.PlaceHolderWithLabels', 'Find %s by %s', PR_MEDIUM, 'Find <object type> by <field names>'),
singleton($dataClass)->plural_name(),
implode(', ', $labels)
);
} else {
return sprintf(
_t('GridField.PlaceHolder', 'Find %s', PR_MEDIUM, 'Find <object type>'),
singleton($dataClass)->plural_name()
);
}
}
}
/**
* @param String
*/
public function setPlaceholderText($text) {
$this->placeholderText = $text;
}
/**
* This will provide a StartsWith search that only returns a value if we are
* matching ONE object only. We wouldn't want to attach used any object to
* the list.
*
* @param GridField $gridField
* @param string $field
* @param string $searchTerm
* @param string $dataclass
* @return string
*/
protected function findSingleEntry($gridField, $field, $searchTerm, $dataclass) {
$fullList = DataList::create($dataclass);
$searchTerm = Convert::raw2sql($searchTerm);
if(!$searchTerm) {
return;
}
$existingList = clone $gridField->getList();
$searchResults = $fullList->subtract($existingList->limit(0))->filter($field.':StartsWith', $searchTerm);
// If more than one, skip
if($searchResults->count() != 1) {
return '';
}
$gridField->State->GridFieldAddRelation = $searchResults->first()->ID;
return $searchResults->first()->$field;
}
}
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