/**
  * Display a listing of reportcolumns
  *
  * @return Response
  */
 public function index($report_id)
 {
     if (!ReportColumn::canList()) {
         return $this->_access_denied();
     }
     if (Request::ajax()) {
         $users_under_me = Auth::user()->getAuthorizedUserids(ReportColumn::$show_authorize_flag);
         if (empty($users_under_me)) {
             $reportcolumns = ReportColumn::whereNotNull('report_columns.created_at');
         } else {
             $reportcolumns = ReportColumn::whereIn('report_columns.user_id', $users_under_me);
         }
         $reportcolumns->where('report_id', $report_id);
         $reportcolumns = $reportcolumns->select(['report_columns.id', 'report_columns.order', 'report_columns.name', 'report_columns.label', 'report_columns.options', 'report_columns.mutator', 'report_columns.id as actions']);
         return Datatables::of($reportcolumns)->edit_column('actions', function ($reportcolumn) use($report_id) {
             $actions = [];
             $actions[] = $reportcolumn->canShow() ? link_to_action('ReportColumnsController@show', 'Show', [$report_id, $reportcolumn->id], ['class' => 'btn btn-xs btn-primary']) : '';
             $actions[] = $reportcolumn->canUpdate() ? link_to_action('ReportColumnsController@edit', 'Update', [$report_id, $reportcolumn->id], ['class' => 'btn btn-xs btn-default']) : '';
             $actions[] = $reportcolumn->canDelete() ? Former::open(action('ReportColumnsController@destroy', [$report_id, $reportcolumn->id]))->class('form-inline') . Former::hidden('_method', 'DELETE') . '<button type="button" class="btn btn-xs btn-danger confirm-delete">Delete</button>' . Former::close() : '';
             return implode(' ', $actions);
         })->edit_column('options', function ($reportfield) {
             return nl2br($reportfield->options);
         })->remove_column('id')->make();
         return Datatables::of($reportcolumns)->make();
     }
     Asset::push('js', 'datatables');
     return View::make('reportcolumns.index', compact('report_id'));
 }