/**
* Based on Mage_Adminhtml_Block_Widget_Grid::_addColumnFilterToCollection()
*
* Adds a filter condition to the collection for a specified column
*
* @param Mage_Adminhtml_Block_Widget_Grid_Column $column
*
* @return $this
*/
protected function _addColumnFilterToCollection($column)
{
if (!$this->getCollection()) {
return $this;
}
$field = $column->getFilterIndex() ? $column->getFilterIndex() : $column->getIndex();
if ($column->getFilterConditionCallback()) {
call_user_func($column->getFilterConditionCallback(), $this->getCollection(), $column);
return $this;
}
$cond = $column->getFilter()->getCondition();
if ($field && isset($cond)) {
/**
* @var TIG_MyParcel2014_Model_Resource_Shipment_Grid_Collection $collection
*/
$collection = $this->getCollection();
$collection->addFieldToFilter($field, $cond);
}
return $this;
}
