Question

我正在使用laravel 5.2，我正在为我的应用程序开发一个消息传递系统。我正在尝试向数据库发送消息，但我不断收到此错误“调用未定义的方法Illuminate \ Database \ Query \ Builder :: messages（）” 我的MessageController如下：

namespace App\Http\Controllers;

use Illuminate\Support\Facades\Auth;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Session;
use App\Http\Requests;
use App\Message;

class MessageController extends Controller
{
    public function CreateMessage(Request $request)
    {

        $meso = new Message();
        $meso->body = $request['body'];
        $meso->subject = $request['subject'];


        $request->user()->messages()->save($meso) ;


       return redirect()->route('mail');
    }
}

这是我的路线文件

Route::post('send', 'MessageController@CreateMessage');

这是我的表格：

<form role="form" class="form-horizontal" method="POST" action="{{ url('/send') }}">
                                              <div class="form-group">
                                                  <label class="col-lg-2 control-label">To</label>
                                                  <div class="col-lg-10">
                                                      <input type="text" placeholder="" id="inputEmail1" class="form-control">
                                                  </div>
                                              </div>
                                              <div class="form-group">
                                                  <label class="col-lg-2 control-label">Cc / Bcc</label>
                                                  <div class="col-lg-10">
                                                      <input type="text" placeholder="" id="cc" class="form-control">
                                                  </div>
                                              </div>
                                              <div class="form-group">
                                                  <label class="col-lg-2 control-label">Subject</label>
                                                  <div class="col-lg-10">
                                                      <input type="text" placeholder="" id="inputPassword1" class="form-control">
                                                  </div>
                                              </div>
                                              <div class="form-group">
                                                  <label class="col-lg-2 control-label">Message</label>
                                                  <div class="col-lg-10">
                                                      <textarea rows="10" cols="30" class="form-control" id="" name=""></textarea>
                                                  </div>
                                              </div>

                                              <div class="form-group">
                                                  <div class="col-lg-offset-2 col-lg-10">
                                                      <span class="btn green fileinput-button">
                                                        <i class="fa fa-plus fa fa-white"></i>
                                                        <span>Attachment</span>
                                                        <input type="file" name="files[]" multiple="">
                                                      </span>
                                                      <button class="btn btn-send" type="submit">Send</button>
                                                      <input type="hidden" value="{{ Session::token() }}" name="_token">
                                                  </div>
                                              </div>
                                          </form>

有人帮我调试此错误

Answer 1

您应该在messages()模型中创建User关系：

public function messages()
{
    return $this->hasMany('App\Message');
}

此外，您需要在user_id表格中设置messages foreign key defined才能使关系有效。

Answer 2

试试这个：

$request->user()->messages->save($meso);

而不是：

$request->user()->messages()->save($meso);

Laravel从数据发送到数据库

2 个答案: