passing name instead of id

Hi all,
   I'm doing project for movies based website, i need to pass the genre_type instead of instead of ID.
Web URL : showtime (dot) 22web(dot) org - and menu Movies Genre.

Objective : to get the movies list based on selected genre with Pagination ., i have done it using core PHP
@ showtime (dot) 22web(dot) org/movies-genre.php?genre_type=Action

My code, @ https://gitlab.com/manigopal/ci-projects...r/Showtime [regularly updated after every changes]


Live Website @ http://cishowtime.22web.org


Pagination works fine on #Movies page @ http://cishowtime.22web.org/movies

Resource files of #Movies page :
Model file => Model_movie.php
View file => view_movies.php
Controller file => Movies.php


Issue on #MoviesGenre page @ http://cishowtime.22web.org/movies/genre/Action

Resource files of #MoviesGenre page :
Model file => Model_movie_genre.php
View file => view_movies_genre.php
Controller file => Movies_genre.php

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MVC files of Movies(which works fine) & MoviesGenre(which has issue) @ https://gitlab.com/manigopal/ci-projects...r/Showtime