passing name instead of id

Your controller has this line:

PHP Code:

$config["total_rows"] = $this->Model_movie_genre->movies_by_genre($genre_type); 


The model function:

PHP Code:

public function movies_by_genre($genre_type)
{
    $query = $this->db->query("SELECT * FROM movies_info WHERE movie_genre=? ORDER BY movie_id DESC", array('movie_genre'=>$genre_type));
    return $query->result_array();
} 


This function always returns an array (an empty array if there are no results). Which is wrong, because $config['total_rows'] must be a numeric value (0 or greater) to make the pagination work.

Create a new function in the model:

PHP Code:

public function movie_count($genre_type)
{
  return $this->db->where('movie_genre', $genre_type)->count_all_results('movies_info');
} 


In the controller:

PHP Code:

$config["total_rows"] = $this->Model_movie_genre->movie_count($genre_type);