php - Category product menu bar not linking -


i made category menu bar on website can click on category , see products of category, not working me , must doing wrong. 

some database information:  categories table: row 1: id row 2: name  in products table: row: category_id

i used db helper (db_helper.php)

<?php if (!function_exists('get_categories_h')) {     function get_categories_h(){         $ci = get_instance();         $categories = $ci->product_model->get_categories();         return $categories;     } } ?>

this product_model file made get_categories function:

<?php defined('basepath') or exit('no direct script access allowed');  class product_model extends ci_model {      public function saveproduct($data) {          $this->db->insert('products', $data);         $product_id = $this->db->insert_id();         return $product_id;     }     public function get_product_details($product_id) {         $arrreturn = array();         $this->db->select('*');         $this->db->from('products');         $this->db->where('product_id', $product_id);         $query = $this->db->get();         $result = $query->result_array();         if (!empty($result)) {             $arrreturn = $result[0];         }         return $arrreturn;     }     /*       categories      */     public function get_categories(){         $this->db->select('*');          $this->db->from('categories');          $query = $this->db->get();          $result = $query->result_array();         return $result;     } } ?>

and menu bar in view file i'm loading categories.

<div class="container-fluid">         <div class="row">             <div class="col-lg-1">                 <div id="categorymenu">                     <center>  <h3>categorieën</h3> </center>                     <ul class="list-group">                         <?php foreach (get_categories_h() $category) : ?>                             <li class="list-group-item">                                 <a href="<?php echo $category->id; ?>"><?php echo $category['name']; ?>                                 </a>                              </li>                         <?php endforeach; ?>                     </ul>                 </div>             </div>         </div>     </div>

i able echo categories database links not working. hope can me, thanks!

looks creating nonsense url href value. unless 'id' field of 'categories' table contains values use "controller/method/id" scheme links creating don't go anywhere.

the 'id' field contains numbers. yes?

if so, links http://example.com/123 isn't going go anywhere unless have controller named "123".

you need hrefs go somewhere. recommend using anchor() function of codeigniter url helper. need load helper before example work.

<?php foreach (get_categories_h() $category) : ?>     <li class="list-group-item">         <?php echo anchor("controller_name/controller_method/{$category->id}", $category['name']); ?>     </li> <?php endforeach; ?>

without anchor() function written

<a href="controller_name/controller_method/<?php echo $category->id;?>"> <?php echo $category['name']; ?></a>

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