[IMP] rename_fields: minor code improvement

openupgradelib/openupgrade.py

@@ -583,9 +583,8 @@ def rename_columns(cr, column_spec):
                 )
 
 
-def _rename_field_on_dashboard(
-        env, model, old_field, new_field, dashboard_view_data
-    ):
+def _rename_field_on_dashboard(env, model, old_field, new_field,
+                               dashboard_view_data):
     for r in dashboard_view_data:
         parsed_arch = etree.XML(r.arch)
         act_window_ids = parsed_arch.xpath("//action/@name")
@@ -671,9 +670,10 @@ def rename_fields(env, field_spec, no_deep=False):
       the environment. Not used for now.
     """
     cr = env.cr
-    # Variable used to change field which present in ir.ui.view.custom
-    # like the one used on dashboard module
-    dashboard_view_data = env["ir.ui.view.custom"].search([])
+    if version_info[0] > 9:
+        # Variable used to change field which present in ir.ui.view.custom
+        # like the one used on dashboard module
+        dashboard_view_data = env["ir.ui.view.custom"].search([])
     for model, table, old_field, new_field in field_spec:
         if column_exists(cr, table, old_field):
             rename_columns(cr, {table: [(old_field, new_field)]})