Remove specific criteria from Varien_Db_Select join

Question

I have Varien_Db_Select object with some joins and I need to change condition in one of them. How can I do this?

update: I found that condition in "from" part and then in "joinCondition" part. I can loop through, but I can't put them back

Answer 1

So this is what I came up with:

$fromAndJoins = $select->getPart(Zend_Db_Select::FROM);
foreach($fromAndJoins as $key=>$joins){
        if(strpos($joins['joinCondition'],$attribute->getAttributeCode().'_idx.attribute_id')!==false){
            $newcondition = //change $joins['joinCondition'] as you want
            $fromAndJoins[$key]['joinCondition']=$newcondition;

        }
    }
$select->reset(Zend_Db_Select::FROM);
$select->setPart(Zend_Db_Select::FROM,$fromAndJoins);

Answer 2

Here is the method I would use.

You can get the conditions ("where" part) like this:

$where = $collection->getSelect()->getPart('where');

Then you can loop through the conditions like this:

foreach ($where as $key => $condition)
{
// Do what you need
}

Finally once you've made the changes you needed, don't forget to apply the updated condition to your colllection:

$collection->getSelect()->setPart('where', $where);

Answer 3

If you get the error

You cannot define a correlation name 'xxx' more than once

you have to unset($fromAndJoins[$key]); item, where the key was in my case

$key = $attribute->getAttributeCode().'_idx.attribute_id';