I have an admin grid with a count column, everything works fine except the filtering.

This is my _prepareCollection() method :

protected function _prepareCollection()
    $orders              = Mage::getModel('Sales/Order')
                                ->addFieldToFilter('main_table.status', array('eq' => 'complete'));

                'sorders' => 'suiviprepa_suiviorders'),
                'main_table.increment_id = sorders.order_increment_id ',
                    'num_issues' => 'COUNT(sorders.reason)'


    return parent::_prepareCollection();

In _prepareColumns() I added a filter callback:

        'header'                        => 'Problems',
        'index'                         => 'num_issues',
        'type'                          => 'number',
        'renderer'                      => 'Name_Mymodule_Block_Adminhtml_Orders_Renderer_Numissues',
        'filter_condition_callback'     => array($this, '_prepaIssuesFilter')

Like this:

protected function _prepaIssuesFilter($collection, $column)
    (int) $filterValue = $column->getFilter()->getValue();

    if (!is_null($filterValue)) {
        $collection->getSelect()->having('COUNT(sorders.reason) = ?', $filterValue);

The final request is working (if I run it in MySQL is does the job), but Magento returns an error, I guess running another simple request for pagination purpose :

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'sorders.reason' in 'having clause', query was: SELECT COUNT(*) FROM `sales_flat_order` AS `main_table` WHERE (main_table.status = 'complete') HAVING (COUNT(sorders.reason) = 1)

Does anyone has any idea how to make such a filtering on count column work?

  • Seems like your "sorders" alias cannot be used. Try printing your SQL Query using $collection->printlogquery(true,true); before and after adding your having clause to see what's going on here. – Raphael at Digital Pianism Jan 13 '16 at 9:05
  • @DigitalPianism The query is ok, it runs as I want (trying in MySQL Workbench): SELECT main_table.*, COUNT(sorders.reason) AS num_issues FROM sales_flat_order AS main_table LEFT JOIN suiviprepa_suiviorders AS sorders ON main_table.increment_id = sorders.order_increment_id WHERE (main_table.status = 'complete') GROUP BY main_table.increment_id HAVING (COUNT(sorders.reason) = 1) But not in Magento – feub Jan 13 '16 at 9:22
  • Have you tried using COUNT(suiviprepa_suiviorders.reason) instead ? – Raphael at Digital Pianism Jan 13 '16 at 9:32
  • It doesn't work, suiviprepa_suiviorders not being a table name. Thank you for your time @DigitalPianism – feub Jan 13 '16 at 10:01

This is what I do to filter a count column in a custom grid:

// in the collection class
public function addProductCount()
    $innerSelect = $this->getConnection()->select()
            ['inner_items' => $this->getTable('custom/product')],
            ['prerequisite_id', 'cnt' => new Zend_Db_Expr('COUNT(inner_items.product_id)')]

        ['items' => $innerSelect],
        'main_table.prerequisite_id = items.prerequisite_id',
        ['product_count' => new Zend_Db_Expr('COALESCE(items.cnt,0)')]

    $this->addFilterToMap('product_count', 'COALESCE(items.cnt,0)'); // enable filtering in grid

    return $this;

The table 'custom/product' has 2 columns: prerequisite_id and product_id.

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