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<?php |
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namespace SilverStripe\Forms\GridField; |
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use SilverStripe\Core\Injector\Injectable; |
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use SilverStripe\ORM\DataObject; |
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use SilverStripe\ORM\FieldType\DBField; |
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use SilverStripe\ORM\Hierarchy\Hierarchy; |
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use SilverStripe\View\ArrayData; |
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use SilverStripe\View\HTML; |
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use SilverStripe\View\SSViewer; |
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/** |
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* Adds a "level up" link to a GridField table, which is useful when viewing |
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* hierarchical data. Requires the managed record to have a "getParent()" |
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* method or has_one relationship called "Parent". |
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*/ |
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class GridFieldLevelup implements GridField_HTMLProvider |
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{ |
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use Injectable; |
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/** |
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* @var integer - the record id of the level up to |
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*/ |
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protected $currentID = null; |
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/** |
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* sprintf() spec for link to link to parent. |
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* Only supports one variable replacement - the parent ID. |
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* @var string |
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*/ |
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protected $linkSpec = ''; |
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/** |
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* @var array Extra attributes for the link |
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*/ |
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protected $attributes = array(); |
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/** |
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* |
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* @param integer $currentID - The ID of the current item; this button will find that item's parent |
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*/ |
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public function __construct($currentID) |
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{ |
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if ($currentID && is_numeric($currentID)) { |
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$this->currentID = $currentID; |
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} |
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} |
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/** |
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* @param GridField $gridField |
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* @return array|null |
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*/ |
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public function getHTMLFragments($gridField) |
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{ |
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$modelClass = $gridField->getModelClass(); |
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$parentID = 0; |
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if (!$this->currentID) { |
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return null; |
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} |
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/** @var DataObject|Hierarchy $modelObj */ |
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$modelObj = DataObject::get_by_id($modelClass, $this->currentID); |
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if (!$modelObj) { |
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throw new \LogicException( |
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"Can't find object of class $modelClass ID #{$this->currentID} for GridFieldLevelup" |
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); |
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} |
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$parent = null; |
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if ($modelObj->hasMethod('getParent')) { |
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$parent = $modelObj->getParent(); |
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} elseif ($modelObj->ParentID) { |
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$parent = $modelObj->Parent(); |
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} |
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if ($parent) { |
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$parentID = $parent->ID; |
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} |
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// Attributes |
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$attrs = array_merge($this->attributes, array( |
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'href' => sprintf($this->linkSpec, $parentID), |
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'class' => 'cms-panel-link ss-ui-button font-icon-level-up no-text grid-levelup' |
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)); |
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$linkTag = HTML::createTag('a', $attrs); |
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$forTemplate = new ArrayData(array( |
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'UpLink' => DBField::create_field('HTMLFragment', $linkTag) |
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)); |
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$template = SSViewer::get_templates_by_class($this, '', __CLASS__); |
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return array( |
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'before' => $forTemplate->renderWith($template), |
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); |
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} |
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public function setAttributes($attrs) |
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{ |
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$this->attributes = $attrs; |
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return $this; |
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} |
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public function getAttributes() |
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{ |
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return $this->attributes; |
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} |
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public function setLinkSpec($link) |
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{ |
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$this->linkSpec = $link; |
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return $this; |
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} |
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public function getLinkSpec() |
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{ |
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return $this->linkSpec; |
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} |
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} |
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sminnee /
silverstripe-framework
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