Laravel 使用 foreach 循环更新/编辑

Question

我试图更新我的表，但我无法让它工作..我总是以错误告终：

为 foreach() 提供的参数无效

这是我的控制器：

 public function show_score($id)
    {

        $scores = Score::with(['lead','subject'])->where(['subject_id'=>$id])->get();

        return view('markbook.show_score',compact('scores'));
    }

    public function update_score(Request $request)
    {
        $id = $request->input('id');

         $scores = Score::find($id);
         foreach ($scores as $datas) {
         $datas->jan_ap=$request->input('jan_ap');
         $datas->jan_hm=$request->input('jan_hm');
         $datas->save();  

        }


    }

route:
Route::get('markbook/scores/{id}', 'MarkbookController@show_score' );
Route::post('markbook/scores', 'MarkbookController@update_score'); 

这是我的表格，我正在尝试循环更新的分数：

Answer 1

从聊天讨论中发现，您要更新多个分数，列在 tr, td 中。你可以像这样改变它

视图的变化

@foreach($scores as $score) 
    <tr> 
        <td>{{$score->lead->student_name}} <input type="hidden" name="scores[{{$loop->index}}][id]" value="{{$score->id}}"></td> 
        <td><input type="text" name="scores[{{$loop->index}}][jan_ap]" value="{{$score->jan_ap}}"></td> 
        <td><input type="text" name="scores[{{$loop->index}}][jan_hm]" value="{{$score->jan_hm}}"></td> 
    </tr> 
@endforeach 

控制器更新分数

public function update_score(Request $request) 
{ 
    $scores = $request->input('scores');  //here scores is the input array param 

    foreach($scores as $row){
        $score = Score::find($row['id']); 
        $score->jan_ap = $row['jan_ap']; 
        $score->jan_hm = $row['jan_hm']; 
        $score->save(); 
    }
}