dnadesign / silverstripe-elemental-virtual

src/Forms/ElementalGridFieldAddExistingAutocompleter.php

<?php

namespace DNADesign\ElementalVirtual\Forms;

use DNADesign\ElementalVirtual\Model\ElementVirtual;
use SilverStripe\Core\Convert;
use SilverStripe\Forms\GridField\GridField;
use SilverStripe\Forms\GridField\GridFieldAddExistingAutocompleter;
use SilverStripe\ORM\DataObject;
use SilverStripe\ORM\SS_List;

/**
 * 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
{

    /**
     * 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) {
            $object = DataObject::get_by_id($gridField->getModelClass(), $objectID);

$objectID of type array|string is incompatible with the type boolean|integer expected by parameter $idOrCache of SilverStripe\ORM\DataObject::get_by_id().

            if ($object) {

$object is of type SilverStripe\ORM\DataObject, thus it always evaluated to true.

                // if the object is currently not linked to either a page or another list then we want to link to
                // the original, otherwise link to a clone
                if (!$object->ParentID) {
                    $dataList->add($object);
                } else {
                    $virtual = ElementVirtual::create();
                    $virtual->LinkedElementID = $object->ID;
                    $virtual->write();

                    $dataList->add($virtual);
                }
            }
        }

        $gridField->State->GridFieldAddRelation = null;

        return $dataList;
    }
}