silverstripe-blog/src/Admin/GridFieldMergeAction.php

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<?php
namespace SilverStripe\Blog\Admin;
use SilverStripe\Blog\Admin\GridFieldFormAction;
use SilverStripe\Control\Controller;
use SilverStripe\Core\Injector\Injectable;
use Silverstripe\Forms\DropdownField;
use SilverStripe\Forms\GridField\GridField;
use SilverStripe\Forms\GridField\GridField_ActionProvider;
use SilverStripe\Forms\GridField\GridField_ColumnProvider;
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class GridFieldMergeAction implements GridField_ColumnProvider, GridField_ActionProvider
{
use Injectable;
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/**
* List of records to show in the MergeAction column.
*
* @var array|SS_List
*/
protected $records;
/**
* Type of parent DataObject (i.e BlogTag, BlogCategory).
*
* @var string
*/
protected $parentType;
/**
* Relationship method to reference parent (i.e BlogTags).
*
* @var string
*/
protected $parentMethod;
/**
* Relationship method to reference child (i.e BlogPosts).
*
* @var string
*/
protected $childMethod;
/**
* @param array|SS_List $records
* @param string $parentType
* @param string $parentMethod
* @param string $childMethod
*/
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public function __construct($records = [], $parentType, $parentMethod, $childMethod)
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{
$this->records = $records;
$this->parentType = $parentType;
$this->parentMethod = $parentMethod;
$this->childMethod = $childMethod;
}
/**
* {@inheritdoc}
*/
public function augmentColumns($gridField, &$columns)
{
if (!in_array('MergeAction', $columns)) {
$columns[] = 'MergeAction';
}
return $columns;
}
/**
* {@inheritdoc}
*/
public function getColumnsHandled($gridField)
{
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return ['MergeAction'];
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}
/**
* {@inheritdoc}
*/
public function getColumnContent($gridField, $record, $columnName)
{
if ($columnName === 'MergeAction' && $record->{$this->childMethod}()->Count() > 0) {
$dropdown = DropdownField::create('Target', 'Target', $this->records->exclude('ID', $record->ID)->map());
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$dropdown->setAttribute('id', 'Target_'.$record->ID);
$prefix = strtolower($this->parentMethod . '-' . $this->childMethod);
$action = GridFieldFormAction::create(
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$gridField,
'MergeAction' . $record->ID,
'Move',
'merge',
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[
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'record' => $record->ID,
'target' => $prefix . '-target-record-' . $record->ID,
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]
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);
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$action->setExtraAttributes([
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'data-target' => $prefix . '-target-record-' . $record->ID
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]);
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return $dropdown->Field() . $action->Field() . '<a title="Move posts to" class="MergeActionReveal">move posts to</a>';
}
return null;
}
/**
* {@inheritdoc}
*/
public function getColumnAttributes($gridField, $record, $columnName)
{
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return ['class' => 'MergeAction'];
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}
/**
* {@inheritdoc}
*/
public function getColumnMetadata($gridField, $columnName)
{
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return ['title' => 'Move posts to'];
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}
/**
* {@inheritdoc}
*/
public function getActions($gridField)
{
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return ['merge'];
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}
/**
* {@inheritdoc}
*/
public function handleAction(GridField $gridField, $actionName, $arguments, $data)
{
if ($actionName === 'merge') {
$controller = Controller::curr();
$request = $controller->getRequest();
$target = $request->requestVar($arguments["target"]);
$parentType = $this->parentType;
$fromParent = $parentType::get()->byId($arguments['record']);
$toParent = $parentType::get()->byId($target);
$posts = $fromParent->{$this->childMethod}();
foreach ($posts as $post) {
$relationship = $post->{$this->parentMethod}();
$relationship->remove($fromParent);
$relationship->add($toParent);
}
}
}
}