protected function _addColumnFilterToCollection($column)
{
if ($this->getCollection()) {
if ($column->getId() == 'banner_triggers') {
$bannerIds = $this->_getSelectedBanners();
if (empty($bannerIds)) {
$bannerIds = 0;
}
if ($column->getFilter()->getValue()) {
$this->getCollection()->addFieldToFilter('banner_id', array('in' => $bannerIds));
} else {
if ($bannerIds) {
$this->getCollection()->addFieldToFilter('banner_id', array('nin' => $bannerIds));
}
}
} else {
parent::_addColumnFilterToCollection($column);
}
}
return $this;
}
