fix check for json column type

Author: pxpm

src/app/Library/CrudPanel/Traits/Search.php

@@ -4,7 +4,6 @@
 
 use Backpack\CRUD\ViewNamespaces;
 use Carbon\Carbon;
-use Doctrine\DBAL\Types\JsonType;
 use Validator;
 
 trait Search
@@ -113,7 +112,7 @@ public function applyDatatableOrder()
                     if (method_exists($this->model, 'translationEnabled') &&
                         $this->model->translationEnabled() &&
                         $this->model->isTranslatableAttribute($column['name']) &&
-                        is_a($this->model->getConnection()->getDoctrineColumn($this->model->getTableWithPrefix(), $column['name'])->getType(), JsonType::class)
+                        $this->isJsonColumnType($column['name'])
                     ) {
                         $this->orderByWithPrefix($column['name'].'->'.app()->getLocale(), $column_direction);
                     } else {
@@ -395,10 +394,10 @@ public function getEntriesAsJsonForDatatables($entries, $totalRows, $filteredRow
         }
 
         return [
-            'draw' => (isset($this->getRequest()['draw']) ? (int) $this->getRequest()['draw'] : 0),
-            'recordsTotal' => $totalRows,
+            'draw'            => (isset($this->getRequest()['draw']) ? (int) $this->getRequest()['draw'] : 0),
+            'recordsTotal'    => $totalRows,
             'recordsFiltered' => $filteredRows,
-            'data' => $rows,
+            'data'            => $rows,
         ];
     }
 
@@ -413,4 +412,9 @@ public function getColumnWithTableNamePrefixed($query, $column)
     {
         return $query->getModel()->getTable().'.'.$column;
     }
+
+    private function isJsonColumnType(string $columnName)
+    {
+        return $this->model->getDbTableSchema()->getColumnType($columnName) === 'json'; 
+    }
 }