GridFieldLevelup.php
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<?php
/**
* Adds a "level up" link to a GridField table, which is useful when viewing
* hierarchical data. Requires the managed record to have a "getParent()"
* method or has_one relationship called "Parent".
*
* @package forms
* @subpackage fields-gridfield
*/
class GridFieldLevelup extends Object implements GridField_HTMLProvider {
/**
* @var integer - the record id of the level up to
*/
protected $currentID = null;
/**
* sprintf() spec for link to link to parent.
* Only supports one variable replacement - the parent ID.
* @var string
*/
protected $linkSpec = '';
/**
* @var array Extra attributes for the link
*/
protected $attributes = array();
/**
*
* @param integer $currentID - The ID of the current item; this button will find that item's parent
*/
public function __construct($currentID) {
if($currentID && is_numeric($currentID)) $this->currentID = $currentID;
}
public function getHTMLFragments($gridField) {
$modelClass = $gridField->getModelClass();
$parentID = 0;
if($this->currentID) {
$modelObj = DataObject::get_by_id($modelClass, $this->currentID);
if($modelObj->hasMethod('getParent')) {
$parent = $modelObj->getParent();
} elseif($modelObj->ParentID) {
$parent = $modelObj->Parent();
}
if($parent) $parentID = $parent->ID;
// Attributes
$attrs = array_merge($this->attributes, array(
'href' => sprintf($this->linkSpec, $parentID),
'class' => 'cms-panel-link list-parent-link'
));
$attrsStr = '';
foreach($attrs as $k => $v) $attrsStr .= " $k=\"" . Convert::raw2att($v) . "\"";
$forTemplate = new ArrayData(array(
'UpLink' => sprintf('<a%s>%s</a>', $attrsStr, _t('GridField.LEVELUP', 'Level up'))
));
return array(
'before' => $forTemplate->renderWith('GridFieldLevelup'),
);
}
}
public function setAttributes($attrs) {
$this->attributes = $attrs;
return $this;
}
public function getAttributes() {
return $this->attributes;
}
public function setLinkSpec($link) {
$this->linkSpec = $link;
return $this;
}
public function getLinkSpec() {
return $this->linkSpec;
}
}