如何在Codeigniter中加入2表

Question

數據存儲在數據庫中，但無法顯示在頁面中。 請幫幫我

表項目

Project_ID，Project_Name，Project_Desc，User_ID

表用戶

用戶名，用戶名

這是我在模型中的代碼

public function get_all_project()  { 

$this->db->select('*');
$this->db->from('user');
$this->db->join('project','project.User_ID = user.User_ID');
$query = $this->db->get();  
return $query->result();  

} 

這是我在控制器中的代碼

    public function list_all_project() {

    $data['projectadmin_list'] = $this->projectadmin_model->get_all_project();
    $this->load->view('projectadmin_list',$data);
    $this->load->model('projectadmin_model');
  }

這是我的代碼

    <?php 

        foreach ($projectadmin_list as $data){ ?> 

     <tr> 
      <td><?php echo $data->Project_ID; ?></td> 
      <td><?php echo $data->Project_Name; ?></td>  
      <td><?php echo $data->Project_Desc; ?></td>
      <td><?php echo $data->Project_Total; ?></td>
      <td><?php echo $data->User_ID; ?></td>

      <td width="60" align="left" ><a href="#" onClick="show_confirm('edit',<?php echo $data->Project_ID;?>)">Edit</a></td>
      <td width="60" align="left" ><a href="#" onClick="show_confirm('delete_project',<?php echo $data->Project_ID;?>)">Delete </a></td>

     </tr>  
    <?php }?>  

Answer 1

在使用模型方法之前先加載模型

public function list_all_project() {
    $this->load->model('projectadmin_model'); // should be load here
    $data['projectadmin_list'] = $this->projectadmin_model->get_all_project();
    $this->load->view('projectadmin_list',$data);

  }

Answer 2

首先加載模型，然后使用它：

public function list_all_project() {
    $this->load->model('projectadmin_model');
    $data['projectadmin_list'] = $this->projectadmin_model->get_all_project();
    $this->load->view('projectadmin_list',$data);
}

Answer 3

如果尚未在控制器腳本中加載模型，請先加載

函數__construct（）

{
    parent::__construct();
    $this->load->model('Model_File');
}

//嘗試此查詢。

公共功能get_all_project（）

{   
    $this->db->select('*');
    $this->db->from('project');     
    $this->db->join('user','user.User_ID = project.User_ID');       
    $query = $this->db->get()->result();
    return $query;

}

Answer 4

Try this one:

 Controller:

public function __construct()
    {
          parent::__construct();
          $this->load->model('projectadmin_model');
    }

public function list_all_project()
 {

   $data['projectadmin_list'] =   this->projectadmin_model->list_all_project();
   $this->load->view('projectadmin_list',$data);

 }




Model:    

 public function __construct()
    {
      $this->load->database();
    }

function list_all_project()
   {
      $this->db->select('*');
      $this->db->from('project p');
      $this->db->join('user u', 'u.User_ID = p.User_ID');       
      $query=$this->db->get();
      return $query->result_array();
  }