select multiple column from multiple table in cakePHP

$markers = $this->Post->find(‘all’, array( ‘joins’ => array( array( ‘table’ => ‘cp_user’, ‘alias’ => ‘users’, ‘type’ => ‘left’, ‘foreignKey’ => false, ‘conditions’=> array(‘Post.postauthor = users.id’) ) ), ‘conditions’=>’Post.poststatus = 1′, ‘fields’=>array(‘Post.postid’, ‘Post.postdate’, ‘Post.posttitle’, ‘Post.postmessage’, ‘Post.poststatus’, ‘Post.commentstatus’, ‘Post.commenttotal’, ‘Users.id’, ‘Users.firstname’ ) )