y('related' =&gt; array('author', 'comments')));

//=============================
// Include one or more conditions on a relation (only supported when chaining)
//=============================

// First method - using an array
//----------------------------
// one condition
Model_Article::query()
    -&gt;related('author', array('where' =&gt; array(array('active', '=', 1))));

// multiple conditions
Model_Article::query()
    -&gt;related('author', array('where' =&gt; array(array('active', '=', 1), array('s