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<?php |
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namespace Symbiote\AdvancedWorkflow\Forms\GridField; |
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use SilverStripe\Control\Controller; |
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use SilverStripe\Forms\GridField\GridField_ColumnProvider; |
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use SilverStripe\Forms\GridField\GridFieldEditButton; |
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use SilverStripe\Security\Permission; |
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use SilverStripe\Security\Security; |
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use SilverStripe\View\ArrayData; |
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use Symbiote\AdvancedWorkflow\DataObjects\WorkflowInstance; |
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/** |
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* |
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* @package advancedworkflow |
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*/ |
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class GridFieldWorkflowRestrictedEditButton implements GridField_ColumnProvider |
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{ |
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/** |
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* Add a column |
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* |
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* @param type $gridField |
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* @param array $columns |
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*/ |
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public function augmentColumns($gridField, &$columns) |
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{ |
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if (!in_array('Actions', $columns)) { |
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$columns[] = 'Actions'; |
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} |
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} |
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/** |
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* Append a 'disabled' CSS class to GridField rows whose WorkflowInstance records are not viewable/editable |
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* by the current user. |
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* |
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* This is used to visually "grey out" records and it's leveraged in some overriding JavaScript, to maintain |
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* an ability to click the target object's hyperlink. |
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* |
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* @param GridField $gridField |
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* @param DataObject $record |
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* @param string $columnName |
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* @return array |
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*/ |
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public function getColumnAttributes($gridField, $record, $columnName) |
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{ |
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$defaultAtts = array('class' => 'col-buttons'); |
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if ($record instanceof WorkflowInstance) { |
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$isAdmin = Permission::check('ADMIN'); |
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$isAssigned = $record->getAssignedMembers()->find('ID', Security::getCurrentUser()->ID); |
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if (!$isAdmin && !$isAssigned) { |
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$atts['class'] = $defaultAtts['class'].' disabled'; |
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return $atts; |
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} |
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return $defaultAtts; |
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} |
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return $defaultAtts; |
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} |
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/** |
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* Add the title |
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* |
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* @param GridField $gridField |
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* @param string $columnName |
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* @return array |
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*/ |
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public function getColumnMetadata($gridField, $columnName) |
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{ |
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if ($columnName == 'Actions') { |
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return array('title' => ''); |
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} |
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} |
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/** |
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* Which columns are handled by this component |
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* |
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* @param type $gridField |
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* @return type |
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*/ |
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public function getColumnsHandled($gridField) |
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{ |
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return array('Actions'); |
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} |
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/** |
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* @param GridField $gridField |
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* @param DataObject $record |
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* @param string $columnName |
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* |
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* @return string - the HTML for the column |
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*/ |
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public function getColumnContent($gridField, $record, $columnName) |
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{ |
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$data = new ArrayData(array( |
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'Link' => Controller::join_links($gridField->Link('item'), $record->ID, 'edit') |
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)); |
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return $data->renderWith(GridFieldEditButton::class); |
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} |
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} |
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symbiote /
silverstripe-advancedworkflow
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.