php - getting an Undefined index: id in submitting a form -

i got error yesterday , thought fixed it. submitting update form.

@extends('layouts.master')   @section('content')   <form action="{{url('/student/update')}}" method="post" role="form">   {{ csrf_field() }}  {{method_field('put')}} <legend>create student</legend> <input type="hidden" name="id" class="form-control" value="{{$student->id}}"> <div class="form-group">   <label for="">name</label>   <input type="text" class="form-control" name="name" value="{{$student->name }}"required="required"> </div> <div class="form-group">   <label for="">address</label>   <input type="text" class="form-control" name="address" value="{{$student->address }}" required="required"> </div> <div class="form-group">   <label for="">phone</label>   <input type="text" class="form-control" name="phone" value="{{$student->phone }}" required="required"> </div> <div class="form-group">   <label for="">career</label>   <select name="career" class="form-control" required="required">     <option>select career</option>     <option value="math"{{$student->career == 'math' ? 'selected' : ''}}>math</option>     <option value="physics"{{$student->career == 'physics' ? 'selected' : ''}}>physics</option>     <option value="engineering"{{$student->career == '' ? 'engineering' : ''}}>engineering</option>   </select> </div> <button type="submit" class="btn btn-primary">update student</button> </form>  @endsection 

the error says relates clientcontroller on line 82.

protected function updateonestudent($parameters) {    $studentid = $parameters['id'];   return $this-  >performputrequest("https://lumenapi.juandmegon.com/students/{$studentid}",   $parameters);     } 

it same function giving me problem yesterday. problem was not calling function. performputrequest function this.

protected function performputrequest($url, $parameters = []) {   $contents = $this->performauthorizerequest('put', $url, $parameters);    $decodedcontents = json_decode($contents);    return $decodedcontents->data; } 

any appreciated.

thanks beginner point me in right direction. had code below.

protected function updateonestudent($parameters) {    $studentid = $parameters['id';   return $this->performputrequest("https://lumenapi.juandmegon.com/students/{$studentid}", $parameters);  } 

i missed bracket id. should this

protected function updateonestudent($parameters) {    $studentid = $parameters['id'];   return $this->performputrequest("https://lumenapi.juandmegon.com/students/{$studentid}", $parameters);  }