codeigniter中的产品类别功能不起作用

Question

我在CodeIgniter中创建一个网站，我试图制作一个包含所有类别的菜单栏，当您点击某个类别时，它必须显示所有的产品该类别，但它并不真正工作。

当我打开category.php视图页面而不是侧面菜单栏时，确实有很大的白色空白链接导致什么都没有。另外，当我点击其中一个链接时，出现错误。这是错误：

An Error Was Encountered 

The URI you submitted has disallowed characters. 

而且这是当我加载了category.php查看错误信息：

A PHP Error was encountered 

Severity: Notice 

Message: Trying to get property of non-object 

Filename: views/allecadeaus.php 

Line Number: 26 

Backtrace: 

File: /home/ubuntu/workspace/application/views/allecadeaus.php 
Line: 26 
Function: _error_handler 

File: /home/ubuntu/workspace/application/controllers/AlleCadeausController.php 
Line: 12 
Function: view 

File: /home/ubuntu/workspace/index.php 
Line: 315 
Function: require_once 

的category.php视图页面看起来是这样的：

allecadeaus.php文件：

<?php include_once ('templates/header.php'); ?> 

<!-- Alle cadeaus gele title bovenaan pagina --> 

<div class="container-fluid"> 
    <div class="row"> 
     <div class="col-lg-12 bg-warning" style="font-size:25px"> 
      <center>Alle cadeaus</center> 
     </div> 
     </div> 
</div> 

<hr /> 

<br> 

<!-- Cadeau categorie side menu --> 
<div class="container-fluid"> 
    <div class="row"> 
      <div class="col-md-4"> 
       <div id="categorymenu"> 
        <center> <h3>Categorieën</h3> </center> 
        <ul class="list-group"> 
         <?php foreach ($category() as $row) : ?> 
          <li class="list-group-item"> 
           <a href="<?php echo base_url('Product/category/'.$row->id);?>"> <?php echo $row->name; ?></a> 

          </li> 
         <?php endforeach; ?> 

        </ul> 
       </div> 
      </div> 




<!-- Laat cadeau zien op alle cadeaus pagina --> 
<div class="col-md-8"> 
<?php foreach($products as $product) : ?> 
    <div class="col-md-2"> 
     <div id="product"> 
     <a href="<?php echo base_url() ?>/Product/details/<?php echo $product['product_id']; ?>"> 
      <img src="<?php echo base_url(); ?>upload/<?php echo $product['product_foto_thumb']; ?>"> 
     </a> 
     <div class="product_naam"><?php echo $product['product_naam']; ?></div> 
     <div class="ophaal_plaats"> 
      <?php echo $product['ophaal_plaats']; ?> 
     </div> 
     <div class="aangeboden_door"> 
      <p>Aangeboden door: Peter</p> 
       </div> 
     </div> 
     </div> 


<?php endforeach; ?> 

</div> 



<div class="clearfix"></div> 

<?php include_once ('templates/footer.php'); ?> 

这是我的category.php查看页面：

<?php include_once ('templates/header.php'); ?> 

<!-- Alle cadeaus gele title bovenaan pagina --> 

<div class="container-fluid"> 
    <div class="row"> 
     <div class="col-lg-12 bg-warning" style="font-size:25px"> 
      <center>Alle cadeaus</center> 
     </div> 
     </div> 
</div> 

<hr /> 

<br> 

<!-- Cadeau categorie side menu --> 
<div class="container-fluid"> 
    <div class="row"> 
      <div class="col-md-4"> 
       <div id="categorymenu"> 
        <center> <h3>Categorieën</h3> </center> 
        <ul class="list-group"> 
         <?php foreach (get_categories_h() as $category) : ?> 
          <li class="list-group-item"> 
           <a href="<?php echo base_url('Product/category/'.$category->id);?>"> <?php echo $category['name']; ?></a> 

          </li> 
         <?php endforeach; ?> 
        </ul> 
       </div> 
      </div> 




<!-- Laat cadeau zien op alle cadeaus pagina --> 
<div class="col-md-8"> 
<?php foreach($products as $product) : ?> 
    <div class="col-md-2"> 
     <div id="product"> 
     <a href="<?php echo base_url() ?>/Product/details/<?php echo $product['product_id']; ?>"> 
      <img src="<?php echo base_url(); ?>upload/<?php echo $product['product_foto_thumb']; ?>"> 
     </a> 
     <div class="product_naam"><?php echo $product['product_naam']; ?></div> 
     <div class="ophaal_plaats"> 
      <?php echo $product['ophaal_plaats']; ?> 
     </div> 
     <div class="aangeboden_door"> 
      <p>Aangeboden door: Peter</p> 
       </div> 
     </div> 
     </div> 


<?php endforeach; ?> 

</div> 



<div class="clearfix"></div> 

<?php include_once ('templates/footer.php'); ?> 

这是我在我的Product.php控制文件中的函数：

public function category($id) 
{ 
    $data['title'] = 'Category'; 
    $data['page'] = 'Product/category'; 
    $data['category'] = $this->Category_model->findByCategory($id); 
    $data['products'] = $this->Product_model->findByCategory($id); 
    $this->load->view('category', $data); 
} 

这些都是在我的产品模型的功能（Product_model.php）：

public function get_categories(){ 
     $this->db->select('*'); 
     $this->db->from('categories'); 
     $query = $this->db->get(); 
     $result = $query->result_array(); 
     return $result; 
    } 


    public function findAll(){ 
     return $this->db->get('product')->result(); 
    } 

    public function findByCategory($category_id){ 
     $this->db->where('category_id', $category_id); 
     return $this->db->get('product')->result(); 
    } 

这是我的Category_model.php文件：

<?php 


class Category_model extends CI_Model { 

    public function findAll(){ 
     return $this->db->get('category')->result(); 
    } 

    public function find($id){ 
     $this->db->where('id', $id); 
     return $this->db->get('category')->row(); 
    } 

} 
?> 

一些数据库的信息：

Table 1: products 
-product_id 
-product_naam 
-product_beschrijving 
-user_id 
-category_id 

table 2: categories: 2 columns: 
1.id 
2.name 

这是我的类别表的外观：

id name 

1 Cosmetica 
2 Antiek en kunst 
3 Voor kinderen 
4 Apparatuur 
5 Boeken 
6 Muziek en instrumenten 
7 Spellen 
8 Sieraden 
9 Overige cadeaus 
10 Sport 

Answer 1

类别名称/ ID的包含未与您当前permitted_uri_chars配置让其在的config.php字符文件。

转到您的config.php文件（application\config\config.php），并给予$config['permitted_uri_chars']选项的值：a-z 0-9~%.:_\-\=

这将使几乎所有常用的字符。

Answer 2

您需要在您的视图文件chnage将这段代码

<?php foreach ($category as $row) : ?> 
          <li class="list-group-item"> 
           <a href="<?php echo base_url('Product/category/'.$row->id);?>"> <?php echo $row->name; ?></a> 

          </li> 
         <?php endforeach; ?>