Modeladmin: Sorting gridfield automatically
Sometimes you want to sort your gridfield in ModelAdmin by default when you have a sorting column in your DataObject. In my case the column is called SortOrder, so overwriting getEditForm() (which generates the grid) with this snippet in the ModelAdmin subclass does the trick:
public function getEditForm($id = null, $fields = null) {
$form=parent::getEditForm($id, $fields);
$model = singleton($this->modelClass);
/** add sorting if we have a field for... */
if (class_exists('GridFieldSortableRows')
&& $model->hasField('SortOrder')
&& $gridField=$form->Fields()->dataFieldByName($this->sanitiseClassName($this->modelClass))) {
if($gridField instanceof GridField) {
$gridField->getConfig()->addComponent(new GridFieldSortableRows('SortOrder'));
}
}
return $form;
}
The GridFieldSortableRows class is part of the SortableGridField module.
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