| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | class GridFieldMergeAction implements GridField_ColumnProvider, GridField_ActionProvider | 
                            
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                | 4 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |      * Cache results of records queries. This is useful for blogs | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |      * with a lot of tags or categories. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |      * @var array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |      * @example | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |      *  array(1) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |      *      ["2d73dd8f18b8da3c8e5e75b6bee66d8d"]=> array(3) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |      *          [2]=> string(5) "tag2" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |      *          [1]=> string(6) "tag1" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |      *          [3]=> string(4) "tag3" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |      *      } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |      *  } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |      *  The array key in the first level is made up of an md5 hash of the sql query, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |      *  then the second level is made if up ID => tag name. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |     protected static $cached_results = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |      * List of records to show in the MergeAction column. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |      * @var array|SS_List | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |     protected $records; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |      * Type of parent DataObject (i.e BlogTag, BlogCategory). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |      * @var string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |     protected $parentType; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |      * Relationship method to reference parent (i.e BlogTags). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |      * @var string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |     protected $parentMethod; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |      * Relationship method to reference child (i.e BlogPosts). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |      * @var string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |     protected $childMethod; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |      * @param array|SS_List $records | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |      * @param string $parentType | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |      * @param string $parentMethod | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |      * @param string $childMethod | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |     public function __construct($records = array(), $parentType, $parentMethod, $childMethod) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |         $this->records = $records; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |         $this->parentType = $parentType; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |         $this->parentMethod = $parentMethod; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |         $this->childMethod = $childMethod; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |     public function augmentColumns($gridField, &$columns) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |         if (!in_array('MergeAction', $columns)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |             $columns[] = 'MergeAction'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |         return $columns; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |     public function getColumnsHandled($gridField) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |         return array('MergeAction'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 89 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 90 |  |  |     public function getColumnContent($gridField, $record, $columnName) | 
            
                                                                        
                            
            
                                    
            
            
                | 91 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 92 |  |  |         if ($columnName === 'MergeAction') { | 
            
                                                                        
                            
            
                                    
            
            
                | 93 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 94 |  |  |             if(!$record->hasMethod($this->childMethod) || $record->{$this->childMethod}()->count() < 1) { | 
            
                                                                        
                            
            
                                    
            
            
                | 95 |  |  |                 return ''; | 
            
                                                                        
                            
            
                                    
            
            
                | 96 |  |  |             } | 
            
                                                                        
                            
            
                                    
            
            
                | 97 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 98 |  |  |             $children = $record->{$this->childMethod}(); | 
            
                                                                        
                            
            
                                    
            
            
                | 99 |  |  |             $cacheKey = md5($children->dataQuery()->sql()); | 
            
                                                                        
                            
            
                                    
            
            
                | 100 |  |  |             if(isset(self::$cached_results[$cacheKey])) { | 
            
                                                                        
                            
            
                                    
            
            
                | 101 |  |  |                 $data = self::$cached_results[$cacheKey]; | 
            
                                                                        
                            
            
                                    
            
            
                | 102 |  |  |             } else { | 
            
                                                                        
                            
            
                                    
            
            
                | 103 |  |  |                 $data = $this->records->map()->toArray(); | 
            
                                                                        
                            
            
                                    
            
            
                | 104 |  |  |                 self::$cached_results[$cacheKey] = $data; | 
            
                                                                        
                            
            
                                    
            
            
                | 105 |  |  |             } | 
            
                                                                        
                            
            
                                    
            
            
                | 106 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 107 |  |  |             // Unset the current record | 
            
                                                                        
                            
            
                                    
            
            
                | 108 |  |  |             if(isset($data[$record->ID])) { | 
            
                                                                        
                            
            
                                    
            
            
                | 109 |  |  |                 unset($data[$record->ID]); | 
            
                                                                        
                            
            
                                    
            
            
                | 110 |  |  |             } | 
            
                                                                        
                            
            
                                    
            
            
                | 111 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 112 |  |  |             if(count($data) > 0) { | 
            
                                                                        
                            
            
                                    
            
            
                | 113 |  |  |                 $dropdown = new DropdownField('Target', 'Target', $data); | 
            
                                                                        
                            
            
                                    
            
            
                | 114 |  |  |                 $dropdown->setAttribute('id', 'Target_'.$record->ID); | 
            
                                                                        
                            
            
                                    
            
            
                | 115 |  |  |                 $prefix = strtolower($this->parentMethod . '-' . $this->childMethod); | 
            
                                                                        
                            
            
                                    
            
            
                | 116 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 117 |  |  |                 $action = GridFieldFormAction::create( | 
            
                                                                        
                            
            
                                    
            
            
                | 118 |  |  |                     $gridField, | 
            
                                                                        
                            
            
                                    
            
            
                | 119 |  |  |                     'MergeAction' . $record->ID, | 
            
                                                                        
                            
            
                                    
            
            
                | 120 |  |  |                     'Move', | 
            
                                                                        
                            
            
                                    
            
            
                | 121 |  |  |                     'merge', | 
            
                                                                        
                            
            
                                    
            
            
                | 122 |  |  |                     array( | 
            
                                                                        
                            
            
                                    
            
            
                | 123 |  |  |                         'record' => $record->ID, | 
            
                                                                        
                            
            
                                    
            
            
                | 124 |  |  |                         'target' => $prefix . '-target-record-' . $record->ID, | 
            
                                                                        
                            
            
                                    
            
            
                | 125 |  |  |                     ) | 
            
                                                                        
                            
            
                                    
            
            
                | 126 |  |  |                 ); | 
            
                                                                        
                            
            
                                    
            
            
                | 127 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 128 |  |  |                 $action->setExtraAttributes(array( | 
            
                                                                        
                            
            
                                    
            
            
                | 129 |  |  |                     'data-target' => $prefix . '-target-record-' . $record->ID | 
            
                                                                        
                            
            
                                    
            
            
                | 130 |  |  |                 )); | 
            
                                                                        
                            
            
                                    
            
            
                | 131 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 132 |  |  |                 return $dropdown->Field() . $action->Field() . '<a title="Move posts to" class="MergeActionReveal">move posts to</a>'; | 
            
                                                                        
                            
            
                                    
            
            
                | 133 |  |  |             } | 
            
                                                                        
                            
            
                                    
            
            
                | 134 |  |  |         } | 
            
                                                                        
                            
            
                                    
            
            
                | 135 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 136 |  |  |         return null; | 
            
                                                                        
                            
            
                                    
            
            
                | 137 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  |     public function getColumnAttributes($gridField, $record, $columnName) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  |         return array('class' => 'MergeAction'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  |     public function getColumnMetadata($gridField, $columnName) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  |         return array('title' => 'Move posts to'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  |     public function getActions($gridField) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  |         return array('merge'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  |     public function handleAction(GridField $gridField, $actionName, $arguments, $data) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  |         if ($actionName === 'merge') { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  |             $controller = Controller::curr(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  |             $request = $controller->getRequest(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  |             $target = $request->requestVar($arguments["target"]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  |             $parentType = $this->parentType; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  |             $fromParent = $parentType::get()->byId($arguments['record']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  |             $toParent = $parentType::get()->byId($target); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  |             $posts = $fromParent->{$this->childMethod}(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  |             foreach ($posts as $post) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  |                 $relationship = $post->{$this->parentMethod}(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  |                 $relationship->remove($fromParent); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  |                 $relationship->add($toParent); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 190 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 191 |  |  |  | 
            
                        
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.