电子邮件中的codeigniter连接查询问题

Question

我的 Codeigniter 连接查询不起作用。在一个函数中只是尝试匹配用户表中的 RC 代码并获取电子邮件，此功能正常工作，下一个目标是匹配文章表中的电子邮件 ID 并获取文章正常工作，但尝试加入用户表和文章表，因为我需要从用户表中获取用户的名字和姓氏，我不知道这是否正确，请查看下面的代码。控制器部分：

  public function user_article()
{   

    $rc=$_GET['rc'];
    $data['title'] = "User Article";        
    if ($this->session->userdata ('is_logged_in')){
        $data['profile']=$this->model_users->profilefetch();
        $data['results']=$this->article_m->u_article($_GET);
        $this->load->view('sd/header',$data);
        $this->load->view('sd/user_article', $data);
        $this->load->view('sd/footer', $data);
    } 
    else {

    }
}

我的模特：

  function u_article($rc)
    {  
        $query=$this->db->select('email')->where('rc',$rc['rc'])->get('users');

        $result=$query->result_array();
        if ($query->num_rows() > 0) {
            $row = $query->row_array(); 
            $array = array ('email' => $row['email'], 'a.status' => '1');   
            $query1=$this->db->select('a.id,title,a.status,description,image,a.email,tags,postdate,firstname,lastname,rc')->join('users u','u.email = a.email','left')->where($array)->get('articles a');

            if ($query1->num_rows() > 0) {
                foreach ($query1->result() as $row) {
                    $data[] = $row;
                }
                return $data;
            }
            else {return NULL;}
        } else {return NULL;}

    } 

检查我的代码并告诉我我的错误提前谢谢。

视图中的错误鞋：

  A Database Error Occurred

  Error Number: 1052

  Column 'email' in where clause is ambiguous

  SELECT `a`.`id`, `title`, `a`.`status`, `description`, `image`, `a`.`email`, `tags`, `postdate`, `firstname`, `lastname`, `rc` FROM (`articles` a) LEFT JOIN `users` u ON `u`.`email` = `a`.`email` WHERE `email` = 'admin@gmail.com' AND `a`.`status` = '1'

  Filename: F:\wamp\www\project\system\database\DB_driver.php

  Line Number: 331

Answer 1

重构了您的代码。只需复制粘贴并检查其工作情况。

控制器：

public function user_article()
{   

    $rc = $this->input->get('rc');
    $data['title'] = "User Article";        
    if ($this->session->userdata ('is_logged_in'))
    {
        $data['profile']=$this->model_users->profilefetch();
        $data['results']=$this->article_m->u_article($rc);
        $this->load->view('sd/header',$data);
        $this->load->view('sd/user_article', $data);
        $this->load->view('sd/footer', $data);
    } 
    else 
    {

    }
}

型号：

function u_article($rc)
{  
    $query = $this->db->select('email')->where('rc',$rc)->get('users');
    $result = $query->result_array();

    if ($query->num_rows() > 0) 
    {
        $row = $query->row_array(); 
        $array = array ('u.email' => $row['email'], 'a.status' => '1'); 
        $query1 = $this->db->select('a.id,a.title,a.status,a.description,a.image,a.email,a.tags,a.postdate,u.firstname,u.lastname,u.rc')->join('users u','u.email = a.email','left')->where($array)->get('articles a');

        if ($query1->num_rows() > 0) 
        {
            foreach ($query1->result() as $row) 
            {
                $data[] = $row;
            }
            return $data;
        }
        else {return NULL;}
    } else {return NULL;}
}