public function postModalFilter(Request $request)
 {
     if ($request->has('select_field') && $request->input('select_field') !== '') {
         $category = $request->input('category');
         $type = $request->input('type');
         if ($type == 'indicator') {
             $display = 'all';
         } else {
             $display = 'user';
         }
         $category_id = $request->input('category_id');
         $node_id = $request->input('node_id');
         $node = \Solunes\Master\App\Node::find($node_id);
         $field = $node->fields()->where('name', $request->input('select_field'))->first();
         if ($field->type == 'date') {
             $subtype = 'date';
         } else {
             if ($field->type == 'string' || $field->type == 'text') {
                 $subtype = 'string';
             } else {
                 if ($field->type == 'field') {
                     $subtype = 'field';
                 } else {
                     $subtype = 'select';
                 }
             }
         }
         $filter = new \Solunes\Master\App\Filter();
         $filter->category = $category;
         $filter->category_id = $category_id;
         $filter->node_id = $node_id;
         $filter->user_id = auth()->user()->id;
         $filter->display = $display;
         $filter->type = $type;
         $filter->subtype = $subtype;
         $filter->parameter = $request->input('select_field');
         $filter->save();
         $url = $this->prev;
         if (strpos($url, '?') !== false) {
             $url .= '&search=1';
         } else {
             $url .= '?search=1';
         }
         return redirect($url);
     } else {
         return redirect($this->prev)->with('message_error', 'Debe seleccionar un campo para filtrar');
     }
 }