在 laravel 中如何在控制器中使用 if /else

Question

我正在尝试将值从视图传递到控制器，但它不起作用，它只发送了“已批准”我的观点<div class="form-group row">  <label for="colFormLabelLg" class="col-md-2 col-sm-3 control-label control-label-lg"><b>DIGITAL SIGNATURE</b></label>  <div class="col-md-3">    <div  class="form-group" id=digital_signature >       <select  class="form-control" name="digital_signature" value="{{ old('digital_signature') }}" required autofocus  >        <option value=""></option>        <option style="color:green">WITH DIGITAL SIGNATURE</option>        <option style="color:green">WITHOUT DIGITAL SIGNATURE</option>      </select>    </div>  </div></div> 我的控制器public function new_approvel_update(Request $request, $id){      if($request->digital_signature == 'WITH DIGITAL SIGNATURE')    {          $input= Student::Where('delete_status','NOT DELETED')->find($id);          $input['center_approved'] = strtoupper ('APPROVED');          $input['date_of_join'] = $request->date_of_join;       } elseif($request->digital_signature == 'WITHOUT DIGITAL SIGNATURE') {               $input= Student::Where('delete_status','NOT DELETED')->find($id);          $input['center_approved'] = strtoupper ('NOT-APPROVED');          $input['date_of_join'] = $request->date_of_join;    }  $certificate->save();  return redirect('new_application')->with('success',' APPLICATION APPROVED SUCCESSFULLY .');}

Answer 1

在您的option标签中select没有使用value属性。所以它会将 null 传递给控制器。

更改选项标签如下：

<option value="APPROVED" style="color:green">WITH DIGITAL SIGNATURE</option>

<option value="NOT-APPROVED" style="color:green">WITHOUT DIGITAL SIGNATURE</option>

更改您的控制器：

if($request->digital_signature == 'APPROVED'){

 // your code

}

elseif($request->digital_signature == 'NOT-APPROVED'){

// your code

}