How to use attributes in controller or model?

[eluser]Iciclefeet[/eluser]
Just looks like you got to defined $post_id that's all

Code:

$post_id=$this->input->post('id');
$data['cats'] = $this->clean_blue_model->cats($post_id);

Something like that.

If using Active Record Class
Can change your query to

Code:

public function cats($post_id = null) {  
  $qveri=$this->get_where('posts',array('id'=$post_id));
  if(!$qveri->num_rows())//No rows return
    return null;
  else
    return  $qveri->result_row();
}

Its the same thing but will add in the backticks