增加批准文号模糊搜索

app/Admin/Controllers/DrugController.php

@@ -77,6 +77,7 @@ protected function grid()
                 $filter->like('code')->width(3);
                 $filter->like('factory')->width(3);
                 $filter->like('standard_code')->width(3);
+                $filter->like('approval_no')->width(3);
                 $filter->in('drug_type')->checkbox(DrugModel::DRUG_TYPE_MAP)->width(3);
                 $filter->in('is_foreign')->checkbox(DrugModel::FOREIGN_MAP)->width(3);
                 $filter->in('is_rx')->checkbox(DrugModel::RX_MAP)->width(3);