[IMP] util/fields: skip convert if the column is missing

It helps for RR versions where we currently need to pre-check if the
field is already created.

closes #259

Signed-off-by: Christophe Simonis (chs) <[email protected]>

Author: aj-fuentes

src/util/fields.py

@@ -980,16 +980,17 @@ def _extract_data_as_attachment(cr, model, field, encoded=True, name_field=None,
 
     def convert_field_to_translatable(cr, model, field):
         table = table_of_model(cr, model)
-        if column_type(cr, table, field) == "jsonb":
+        ctype = column_type(cr, table, field)
+        if not ctype or ctype == "json":
             return
         alter_column_type(cr, table, field, "jsonb", "jsonb_build_object('en_US', {0})")
 
     def convert_field_to_untranslatable(cr, model, field, type="varchar"):
         assert type in ("varchar", "text")
         table = table_of_model(cr, model)
-        if column_type(cr, table, field) != "jsonb":
+        ctype = column_type(cr, table, field)
+        if not ctype or ctype != "jsonb":
             return
-
         alter_column_type(cr, table, field, type, "{0}->>'en_US'")
 
 else: