laravel - 2 模型 2 foreach 在 1 个 View 中。拉维尔

Question

I tried nested foreach few times. but i failed. How to foreach data choices. in duplicates foreach.

Controller

$choices = Choice::where('user_id','=',Auth::id())->get();
$duplicates = Question::selectRaw("count('id') as total, topic_id")->groupBy('topic_id')->get(); 

return view('choices.index',compact('too','choices','duplicates'));

查看

@foreach ($duplicates as $duplicate)
  <tr>
     <td style="text-align: center;">{{ $duplicate->topic->id }}</td>
     <td style="text-align: center;">@foreach ($choices as $choice) {{ $choice->question_number }} @endforeach</td>
 </tr>
@endforeach

我想要的结果是这样的

@foreach ($duplicates as $duplicate)
      <tr>
         <td style="text-align: center;">{{ $duplicate->topic->id }}</td>
         <td style="text-align: center;">$choice->question_number }}</td>
     </tr>
@endforeach

but it cant read that $choice

Answer 1

从聊天讨论来看，Question模型和Choice模型与Topic模型有关系

您需要像这样定义关系

Topic Model

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

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

Question Model

public function topic(){ 
   return $this->belongsTo('App\Topic'); 
}

Choice Model

public function topic(){ 
    return $this->belongsTo('App\Topic'); 
}

Now Fetch data

$duplicates = Question::selectRaw("count('id') as total, topic_id")->with('topic', 'topic.choices')->groupBy('topic_id')->get(); 

Template Render

@foreach ($duplicates as $duplicate)
      <tr>
         <td style="text-align: center;">{{ $duplicate->topic->id }}</td>
         <td style="text-align: center;">
               @foreach ($duplicate->topic->choices as $choice)
                 {{ $choice->question_number }}
               @endforeach
         </td>
     </tr>
@endforeach