CodeIgniter Active Record - Get number of returned rows

Question

I\'m very new to CodeIgniter and Active Record in particular, I know how to do this well in normal SQL but I\'m trying to learn.

How can I select some data from one

Answer 1

This goes to you model:

public function count_news_by_category($cat)
{
    return $this->db
        ->where('category', $cat)
        ->where('is_enabled', 1)
        ->count_all_results('news');
}

It'a an example from my current project.

According to benchmarking this query works faster than if you do the following:

$this->db->select('*')->from('news')->where(...); 
$q = $this->db->get(); 
return $q->num_rows();