How to get all the details from multiple tables in Cake php? :     I have two different tables as Post and Post_Info.

    I want to get all the details using post_id in cake php from both the tables. The Post_Info table having post_id as foreign key and other related details.
    
    I am new to cakephp and i don't know how to get data from multiple tables in cakephp. Please help me out.

I can get data from Post table using following query in cakephp.
    
    Following code is getting data from Post table.

    $userdata = $this->Post->find('first', array(
    	        'conditions' => array('Post.post_id' => $post_id)
    	    ));	

