public function store(Request $request)
 {
     $e = new EntityType();
     $e->name = $request->input('name');
     $icon = $request->input('icon');
     $e->icon = substr($icon, strpos($icon, '-') + 1);
     $e->save();
     $attributes = $request->input('attribute_name');
     $types = $request->input('attribute_type');
     for ($i = 0; $i < count($attributes); $i++) {
         $a = new AttributeType();
         $a->name = $attributes[$i];
         $a->datatype = $types[$i];
         $a->entity_type = $e->id;
         $a->order = $i;
         $a->save();
     }
     return redirect(url('/config'));
 }