试图添加数据到数据库，但它'来作为Null

我试图通过模态添加2个输入字段，但一旦我点击提交，我得到一个错误消息说

SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'Flag_Reason' cannot be null (SQL: insert into `Flagged` (`Flag_Reason`, `Other_Comments`) values (, ))

下面是我关于这个问题的一些代码。

资源,国旗模型

class Resource extends Model
{
    protected $table = 'Resources';
    protected $primaryKey = 'Resource_ID';
    public $timestamps = false;
    protected $fillable = [
        'Name',
        'Description',
        'Misc_Info'
    ];
    protected $guarded = [];
    /** A resource can have many locations */
    public function locations()
    {
        return $this->belongsToMany('App'Models'Location', 'ResourceLocation', 'Location_ID', 'Resource_ID');
    }
    public function flag ()
    {
        return $this->hasMany('App'Models'Flagged');
    }

class Flagged extends Model
{
    protected $table = 'Flagged';
    protected $primaryKey = 'Flag_ID';
    public $timestamps = false;
    protected $fillable = [
        'Flag_Reason',
        'Other_Comments',
    ];
    protected $guarded = [];

}

资源视图(模式在此视图中触发)

<table class=" display table table-hover table-bordered" , id="resource">
  <thead>
    <th>Name</th>
    <th>Description</th>
    <th>Address</th>
  </thead>
  <tbody>
    @foreach($resources as $resource) @foreach ($resource->locations as $location)
    <tr>
      <td> <a class="btn btn-small btn-default" style="float:right; margin-right:5px;" href="{{ URL::to('resource/addToCart/' .$resource->Resource_ID) }}">+</a> {{ $resource->Name }}</td>
      <td>{{ $resource->Description }}</td>
      <td>{{ $location->Address }}</td>
      <td>
        <button type="button" id="submitFlag" class=" msgBtn btn btn-default" style=" display:inline; margin-right:auto;"><a href="#flagResource" data-toggle="modal" data-resource-id="{{ $resource->Resource_ID }}" data-resource-name="{{ $resource->Name }}">Flag</a>
        </button>
      </td>
    </tr>
    @endforeach @endforeach
  </tbody>
</table>

模态

<div class="modal fade" id="flagResource" tabindex="-1" role="dialog" aria-labelledby="flagModalLabel">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
        <h4 class="modal-title" id="flagResourceLabel" style="text-align:center;"> Flagged
                    </h4>
      </div>
      <div class="modal-body">
        {!! Form::open(array('url'=>'flags', 'class'=>'form', 'method'=>'POST')) !!}
        <div class="form-group">
          <label for="reason" class="control-label">Reason for Flagging:</label>
          {!! Form::text('reason', null, array('class'=> 'form-control', 'placeholder'=>'Reason')) !!}
        </div>
        <div class="form-group">
          <label for="comments" class="control-label">Other Comments:</label>
          {!! Form::text('comments', null, array('class'=> 'form-control', 'placeholder'=>'Comments')) !!}
        </div>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        <span class="pull-right">
                    <button type="button" class="btn btn-primary" style="margin-left:5px;"><a href="setflag/{{$resource['Resource_ID']}}">Submit</a></button>
                    </span>
      </div>
      {!! Form::close() !!}
    </div>
  </div>
</div>
<script>
  $('#flagResource').on('show.bs.modal', function(e) {
    var submitFlag = $(e.relatedTarget);
    var resourceName = submitFlag.data('resource-name');
    var resourceId = submitFlag.data('resource-id');
    var modal = $(this);
    modal.find('.modal-title').text(resourceName);
  });
</script>

旗控制器/strong>

public function addFlag($id) 
{ 
  $flag = Flagged::create(Request::only( 
  'Flag_Reason', 
  'Other_Comments' )); 
  $flag->save(); 'Session::flash('flash_message', 'Flagged!'); 
  return back(); 
}

一旦我输入了标志的原因和注释，我就得到了上面的消息。我哪里做错了?提前感谢!

Route::get('flags', 'FlagsController@index');
Route::post('resource', ['as' => 'resource', 'uses'=>'FlagsController@postFlag']);
Route::get('flags/edit/{Resource_ID}', 'FlagsController@editResource');
Route::patch('flags/edit/{Resource_ID}', 'FlagsController@updateResource');
Route::get('setflag/{Resource_ID}', 'FlagsController@addFlag');
Route::get('pages/editresources/rmflag/{Resource_ID}', 'FlagsController@removeFlag');
Route::get('pages/editresources/rmdelete/{Resource_ID}', 'FlagsController@removeDelete');
Route::get('setdelete/{Resource_ID}', 'FlagsController@addDelete');