如何获取动态生成的输入 id 和值

Question

我有一个页面，允许编辑会议注册的注册表单。在此表单中，有一个表格显示该会议存在的问题，然后用户可以通过复选框将每个问题与注册类型相关联。

选中复选框后，他可以点击更新按钮更新注册表。

怀疑：

我的疑问是在用户单击“更新”按钮后如何更新注册表单，同时考虑到选中的复选框。复选框 id 和 value 是动态的，存储在注册表类型表中。那么如何在更新方法中获取选中的复选框，以便可以根据选中的复选框更新registration_type_questions数据透视表？

问题控制者：

// returns the view to edit the conference registration form
        public function edit($id)
        {
            $conference = Conference::find($id);
            $registrationType = RegistrationType::where('conference_id', $id)->get();
            $question = Question::where('conference_id', $id)->get();

            return view('questions.edit')
                ->with('conference', $conference)
                ->with('registration_type', $registrationType)
                ->with('question', $question);
        }
    }
    // update the registration form based on checkboxes selected
     public function update(Request $request, $id){

        $this->validate($request, [
        // ??
        ]); 

        // ??
     }

RegistrationType 模型：

class RegistrationType extends Model
{
    protected $fillable = [
        'name','conference_id',...
    ];
    public function conference(){
        return $this->belongsTo('App\Conference');
    }
    public function questions(){
        return $this->belongsToMany('App\Question', 'registration_type_questions');
    }
}

问题模型：

class Question extends Model
{
    protected $fillable = [
        'question', 'type', 'conference_id',
    ];

    public function registration_type(){
        return $this->belongsToMany('App\RegistrationType', 'registration_type_questions');
    }
}

编辑会议登记表代码：

<form id="edit_registration_types" method="post" class="clearfix" action="{{route('rtypes.update', ['conf_id' => $conf->id])}}">

    {{csrf_field()}}

    <div class="form-row">
        <div class="form-group col">
            <div class="row">
                <div class="col">
                    <table class="table table-striped table-responsive-sm">
                        <thead>
                        <tr>
                            <th scope="col">Info</th>
                            <th scope="col">Include in registration type</th>
                            <th scope="col">Mandatory Field</th>
                        </tr>
                        </thead>
                        <tbody>
                        <tr>
                            <td>Name</td>
                            <td>
                                <i class='fa fa-check font-size-lg text-primary ml-4'></i>
                            </td>
                            <td>
                                <i class='fa fa-check font-size-lg text-primary ml-4'></i>
                            </td>
                        </tr>
                        <tr>
                            <td>Surname</td>
                            <td>
                                <i class='fa fa-check font-size-lg text-primary ml-4'></i>
                            </td>
                            <td>
                                <i class='fa fa-check font-size-lg text-primary ml-4'></i>
                            </td>
                        </tr>



                        @foreach($question as $q)
                            <tr>
                                <td>{{$q->question}}</td>
                                <td>
                                    @foreach($registration_type as $rtype)
                                        <div class="form-check">
                                            <input autocomplete="off" class="form-check-input" type="checkbox" value="{{ $rtype->id }}" id="{{$rtype->id}}">
                                            <label class="form-check-label" for="exampleRadios1">
                                                {{$rtype->name}}
                                            </label>
                                        </div>
                                    @endforeach
                                </td>
                                <td>
                                    @foreach($registration_type as $rtype)
                                        <div class="form-check">
                                            <input autocomplete="off" class="form-check-input" type="checkbox" value="{{ $rtype->id }}" id="{{$rtype->id}}">
                                            <label class="form-check-label" for="exampleRadios1">
                                                for the registration type "{{$rtype->name}}"
                                            </label>
                                        </div>
                                    @endforeach
                                </td>
                            </tr>
                        @endforeach

                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </div>
    <input type="submit" class="btn btn-primary float-right mt-3" value="Update"/>
</form>

Answer 1

据我所知，您只是想要一种从前端捕获动态复选框信息的简单方法。如果是这样，那么您可以简单地使用为此构建的 html 命名约定。例如mycheckbox[]

将其用作所有复选框名称，并在后端处理值，即

@foreach($registration_type as $rtype)
    <div class="form-check">
        <input name="mycheckbox[]" autocomplete="off" class="form-check-input" type="checkbox" value="{{ $rtype->id }}" id="{{$rtype->id}}">
        <label class="form-check-label" for="exampleRadios1">
           {{$rtype->name}}
        </label>
    </div>
@endforeach

后端：

// update the registration form based on checkboxes selected
public function update(Request $request, $id){
    $values = $request->get('mycheckbox');
    foreach($values as $rtype_id){
        //do whatever you want with this rtype id that was checked