CODEIGNITER3框架在編輯帖子時顯示頁面不存在

Question

我已經在CodeIgniter3框架中編寫了一些代碼來編輯和更新帖子。但是當我點擊提交按鈕它重定向到404頁面，並顯示沒有像這裏這樣的頁面我試圖在控制器中創建$數據，然後將其移到模型它不起作用，現在我不知道在哪裏問題。這是我的觀點：

<?php $attributes = array('class' => 'rex-forms', 'name' => 'editcourse', 'id' => 'editcourse', 'data-parsley-validate' => ''); ?> 
     <?php echo form_open_multipart('courses/update', $attributes); ?> 
     <input type="hidden" name="courses_slug" value="<?= $courses['courses_slug'];?>"> 

    <!-- General --> 

    HERE IS SOME CODE 

</form> 

這裏是我的控制器：

public function edit($courses_slug) { 

     //check login 
     if(!$this->session->userdata('logged_in')) { 
      redirect(''); 
     } 

     $data['courses'] = $this->popular_courses_model->get_popular_courses($courses_slug); 

     //check user 

     if($this->session->userdata('id') != $data['courses']['instructor_id']){ 
      redirect(''); 
     } 

     $data['categories'] = $this->courses_model->get_all_categories_for_courses(); 
     $data['title'] = 'Edit Course'; 

     if (empty($data['courses'])) { 
      show_404(); 
     } 

     $this->load->view('templates/header'); 
     $this->load->view('courses/editcourse', $data); 
     $this->load->view('templates/footer'); 
    } 

    public function update() { 
     //check login 
     if(!$this->session->userdata('logged_in')) { 
      redirect(''); 
     } 

     $this->courses_model->update_post(); 

     $this->session->set_flashdata('post_updated', 'Your post has been updated'); 
     redirect('blog'); 
    } 

這裏是我的模型：

public function update_post() { 
     //insert image 
      $config['upload_path'] = './assets/img/single_courses/'; 
      $config['allowed_types'] = 'jpg|png'; 
      $config['max_size']  = 4096; 
      $config['overwrite']  = FALSE; 
      $config['remove_spaces'] = TRUE; 

      $this->load->library('upload', $config); 


      if(!$this->upload->do_upload('userfile')){ 

       $post_image = ''; 
      } else { 
       $datar = array('upload_data' => $this->upload->data()); 
       $post_image = $_FILES['userfile']['name']; 
      } 

      //insert the user registration details into database 
      $slugtitle = mb_strtolower($this->input->post('name'), 'UTF-8'); 
      $slug = url_title($slugtitle); 

      $data = array(
       'title' => strip_tags($this->input->post('name')), 
       'duration' => $this->input->post('duration'), 
       'certification' => $this->input->post('certification'), 
       'price' => strip_tags($this->input->post('price')), 
       'begining' => $this->input->post('begining'), 
       'courses_description' => $this->input->post('description'), 
       'purpose' => $this->input->post('purpose'), 
       'courses_slug' => $slug, 
       'instructor_id' => $this->session->userdata('id'), 
       'category_id' => $this->input->post('category'), 
       'img' => $post_image 
      ); 

     $this->db->where('courses_slug', $this->input->post('courses_slug')); 
     return $this->db->update('courses', $data); 
    } 

Answer 1

您正在使用的模型popular_courses_model但你有沒有裝在自動加載模型因爲您尚未將其加載到控制器中。

$this->load->model('popular_courses_model'); 

您的模型缺少某些結構，除非您剛剛在模型中發佈函數。假設你沒有，你的模型需要看起來像這樣：

<?php if (! defined('BASEPATH')) exit('No direct script access allowed'); 

class Popular_courses_model extends CI_Model 
{  
    public function __construct() 
    { 
     parent::__construct(); 
     // Whatever code you want in your constructor 
    } 

    public function update_post() 
    { 
     // your code here 
    }  
} 

和你的模型應該是Popular_courses_model.php資本化，並在你的「模型」文件夾中。

希望幫助，

保羅