fungsi get CI

/***
menarik data memanfaatkan filter
* filter (array)
* limit => max data yg tampil
* start => mulai start pada posisi xx
* count => hanya mengembalikan nilai
* debug => mengembalikan versi debug yang dapat di analisa
*/
    function item_get_data($filter = array(), $limit = 10, $start = 0, $count = FALSE, $debug = FALSE) {
        $head_table = 'main';
        $this->db_main->reset_query();
        $this->db_main->from($this->tables_realname[$head_table]." i");
        //category
        $this->db_main->join($this->tables_realname['category']." c","i.item_cat=c.cat_code","left");

        if (isset($filter['get_all'])) {
            $this->db_main->where($filter['get_all'][0], $filter['get_all'][1]);
        }

        if (isset($filter['where_field'])) {
            $this->db_main->where($filter['where_field']);
        }
        if (isset($filter['where_like_field'])) {
            $this->db_main->like($filter['where_like_field']);
        }

        if (!isset($filter['show_all'])) {
            $this->db_main->where('i.deleted', 0);
        }

        //==============COUNT=============
        if ($count) {
            $this->db_main->select("count({$this->tables_id[$head_table]}) c");
            $data = $this->db_fetch(TRUE);
            return $data['c'];
        }

        //==================SHOW==========
        if (isset($filter['show_fields'])) {
            $this->db_main->select($filter['show_fields']);
        }
        //================order by=== kondisikan
        if (!isset($filter['order_by'])) {
            $this->db_main->order_by('kode', 'asc');
        } else {
            $this->db_main->order_by($filter['order_by'][0], $filter['order_by'][1]);
        }

        $this->db_main->limit($limit, $start);

        $data = $this->db_fetch();
        if ($debug) {
            $sql = $this->db_main->last_query();
            return array('data' => $data, 'sql' => $sql, 'filter' => $filter);
        } else {
            return $data;
        }
    }