Question

在我看来，我已经将输入选择循环并传递给控制器，以便我可以将它附加到我的数据透视表：

查看

{!! Form::open(['url'=>'surveys/'.$survey_id.'/persons/'.$person_id]) !!}
    @foreach($questions as $question)
        <ol>{{ $question->description }}</ol>
        <select name="answers[]">
            <option value=""></option>
            @foreach($answers as $answer)
                @if($answer->question_id == $question->id)
                    <option value="{{ $answer->question_id }}">{{ $answer->answer }}</option>
                @endif
            @endforeach
        </select>
    @endforeach
    {!! Form::submit('submit',['class'=>'btn btn-primary']) !!}
    {!! Form::close() !!}

CONTROLLER

$input = Request::input('answers');

        $person = Person::findOrFail($person_id);

        $check_if_existing = $person->answers()->find($person_id);

        if (empty($check_if_existing))
        {
            foreach($input as $answer)
            {
                $person->answers()->attach($answer);
            }

        }else{
                $person->answers()->updateExistingPivot($person_id,$input);

        }

我使用 Request :: input（'answers'）; 获取数组。 Attache功能运行良好，但更新很糟糕。你能救我吗？

Answer 1

您需要做的只是使用sync代替attach：

Person::findOrFail($person_id)->answers()->sync(Request::input('answers'));

无需循环，sync接受id的数组（包括其他值）。所以，只有一行代码就足够了。

从Laravel 5中的select数组更新数据透视表

1 个答案: