Is it possible to check which filters have been applied to a given collection.

For example:

$collection = Mage::getModel('sales/order')->getCollection();
$collection->addFieldToFilter('state', 'processing');
$collection->addFieldToFilter('status', 'processing2');

I want to get an array of all filters applied at this point:

    'state' => 'processing',
    'status' => 'processing2'

The closest i can get so far seems to be:


But this is not exactly what I am looking for as it does also provide the AND etc.

For example:

array(2) {
    [0] => string(22) "(state = 'processing')"
    [1] => string(28) "AND (status = 'processing2')"

As you can see in \Varien_Data_Collection_Db::addFieldToFilter there is no way to achieve what you want, out of the box:

public function addFieldToFilter($field, $condition = null)
    if (!is_array($field)) {
        $resultCondition = $this->_translateCondition($field, $condition);
    } else {
        $conditions = array();
        foreach ($field as $key => $currField) {
            $conditions[] = $this->_translateCondition(
                isset($condition[$key]) ? $condition[$key] : null

        $resultCondition = '(' . join(') ' . Zend_Db_Select::SQL_OR . ' (', $conditions) . ')';


    return $this;

Because the filter is translated to a where condition and added to the Zend_Db_Select object.

You can change the collection to use the protected $_filters = array(); property instead of applying the filters directly, then you can just get the filter, if you have access to this property.

This works, because \Varien_Data_Collection_Db::load calls \Varien_Data_Collection_Db::_renderFilters.

  • yes,there are no way to achieve it.Thanks for your descrtion
    – Amit Bera
    Jun 15 '15 at 11:16

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