dnadesign / silverstripe-elemental

code/ElementalGridFieldAddExistingAutocompleter.php

<?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
 * {@link 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 GridFieldDeleteAction} for detaching existing
 * records from a relationship.
 *
 * For easier setup, have a look at a sample configuration in
 * {@link GridFieldConfig_RelationEditor}.
 *
 * @package forms
 * @subpackage fields-gridfield
 */
class ElementalGridFieldAddExistingAutocompleter extends GridFieldAddExistingAutocompleter {

PSR1 recommends that each class must be in a namespace of at least one level to avoid collisions.

    /**
     * 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)
    {
        $objectID = $gridField->State->GridFieldAddRelation(null);

        if(empty($objectID)) {
            return $dataList;
        }

        $object = DataObject::get_by_id($dataList->dataclass(), $objectID);

        if($object) {
            $virtual = new ElementVirtualLinked();
            $virtual->LinkedElementID = $object->ID;
            $virtual->write();

            $dataList->add($virtual);
        }

        $gridField->State->GridFieldAddRelation = null;

        return $dataList;
    }
}