在代码点火器中，我只向那些显示给当前用户的用户显示主题的主题列表

Question

我只想授予访问用户的主题主题，当管理员上传主题时，我将获取主题ID。然后通过一个视图文件，我试图将该主题的sid与该m-topic表中的一个sid匹配，因此我将一个表的值存储在变量$ rs中，并将值存储在$ ra中，然后在我的视图文件中使用if条件我的代码-

型号代码：

public function Select($Table, $Fields = '*', $Where = 1)
    {
        /*
         *  Select Fields
         */
        if ($Fields != '*') {
            $this->db->select($Fields);
        }
        /*
         *  IF Found Any Condition
         */
        if ($Where != 1) {
            $this->db->where($Where);
        }
        /*
         * Select Table
         */
        $query = $this->db->get($Table);

        /*
         * Fetch Records
         */

        return $query->result();
    }

控制器代码：

public function dashboard()
{
  $data['rs'] = $this->lib_model->Select('v_subject_faculty_mapping', 'id,Subject,fid,sid', array('fid' => $this->session->EmpId, 'status' => 0 ));
  $data['ra'] = $this->lib_model->Select('m_topic', 'id,sid,topic', array('status' => 0 ));
  /*
   * CK Editor
   */
  $path = '../assets/ckfinder';
  $width = '85%';
  //Loading Library For Ckeditor
  $this->load->library('ckeditor');
  $this->load->library('ckfinder');
  //configure base path of ckeditor folder
  $this->ckeditor->basePath = base_url('assets/ckeditor/');
  $this->ckeditor->config['toolbar'] = 'Full';
  $this->ckeditor->config['language'] = 'en';
  $this->ckeditor->config['width'] = $width;
  //configure ckfinder with ckeditor config
  $this->ckfinder->SetupCKEditor($this->ckeditor, $path);

  $this->load->view('f/f_header',$data);
  $this->load->view('f/dashboard');
  $this->load->view('f/f_footer');
}

查看代码：

                <label>Question Topic</label>
                <select class="form-control" required name="S" id="S" style="border: double">
                    <option selected="">Select Topic</option>
                    <?php
                    if ($rs[sid] == $ra[sid]) {
                        # code...

                    foreach ($ra as $r)
                    {
                        ?>
                        <option value="<?=$r->id;?>"><?=$r->topic;?></option>
                        <?php
                    }}
                    ?>
                </select>
            </div>

Answer 1

您可以在模型中使用连接功能将这两个表连接在一起，然后不必检查分配课程的其他条件。在模型中尝试：

$this->db->select('t1.fields,t2.fields');
$this->db->from('user_table t1');
$this->db->join('course_table t2','t2.userid = t1.id'); // you can change the table name as per your database.
if ($Where != 1) {
   $this->db->where($Where);
}
$query = $this->db->get();
return $query->result();

并且在控制器中只需调用上面在模型中编写的函数：

$data['rs'] = $this->lib_model->Select(array('fid' => $this->session->EmpId, 'status' => 0 ));

鉴于您不需要检查其他条件，您只需尝试使用foreach循环：

<?php  foreach($rs as $r){ ?>

<option value="<?=$r->id;?>"><?=$r->topic;?></option>

<?php } ?>