Using an existing relation HAS-MANY on a criteria - php

Question

i'm having some problems using a custom made function to search specific data from my database.
I have TableA(id,....) and TableB(id, tablea_id, userid,...)
Model TableA has the following relation code:
'relation_name' => array(self::HAS_MANY, 'TableB', 'tablea_id')
I need to create a custom made function to query TableA and give me results that exist on TableA that contain a certain userid on TableB data, also TableB is related to TableA from tablea_id field.
I found the solution for my problem by using this code:
public function findABCD($user_id)
{
$criteria=new CDbCriteria;
$criteria->join = 'left join TableB on t.id=TableB.tablea_id';
$criteria->condition = "TableB.userid = ".$user_id;
return new CActiveDataProvider($this, array(
'criteria'=>$criteria,
));
}
This works, but I'm not taking advantage of the relation that I have created earlier.
Any ideas of what I need to use?
I tested a lot of things but I'm receiving an SQL error.
This is what I have tested earlier (instead of the criteria Join and the Condition):
$criteria->with=array('relation_name');
$criteria->condition = "relation_name.userid= ".$user_id;
//this does not work as well
//$criteria->condition = "TableB.userid= ".$user_id;
The error is this:
SQL: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'relation_name.userid' in 'where clause'.
Any ideas?

Answer 1

I do this kind of joins with ActiveRecord queries, not sure if it will work for CActiveDataProvider:
$criteria->with = array(
'relation_name' => array(
'joinType' => 'INNER JOIN',
'on' => 'user_id = :user_id',
'params' => array( 'user_id' => $userId )
)
);
$criteria->together = true;