wip pc problems backup

ormar/models/mixins/save_mixin.py

@@ -1,5 +1,8 @@
+import uuid
 from typing import Dict, Optional, Set, TYPE_CHECKING
 
+import pydantic
+
 import ormar
 from ormar.exceptions import ModelPersistenceError
 from ormar.models.helpers.validation import validate_choices
@@ -50,11 +53,30 @@ class SavePrepareMixin(RelationMixin, AliasMixin):
         pkname = cls.Meta.pkname
         pk = cls.Meta.model_fields[pkname]
         if new_kwargs.get(pkname, ormar.Undefined) is None and (
-            pk.nullable or pk.autoincrement
+                pk.nullable or pk.autoincrement
         ):
             del new_kwargs[pkname]
         return new_kwargs
 
+    @classmethod
+    def parse_non_db_fields(cls, model_dict: Dict) -> Dict:
+        """
+        Receives dictionary of model that is about to be saved and changes uuid fields
+        to strings in bulk_update.
+
+        :param model_dict: dictionary of model that is about to be saved
+        :type model_dict: Dict
+        :return: dictionary of model that is about to be saved
+        :rtype: Dict
+        """
+        for name, field in cls.Meta.model_fields.items():
+            if field.__type__ == uuid.UUID and name in model_dict:
+                if field.column_type.uuid_format == "string":
+                    model_dict[name] = str(model_dict[name])
+                else:
+                    model_dict[name] = "%.32x" % model_dict[name].int
+        return model_dict
+
     @classmethod
     def substitute_models_with_pks(cls, model_dict: Dict) -> Dict:  # noqa  CCR001
         """
@@ -104,9 +126,9 @@ class SavePrepareMixin(RelationMixin, AliasMixin):
         """
         for field_name, field in cls.Meta.model_fields.items():
             if (
-                field_name not in new_kwargs
-                and field.has_default(use_server=False)
-                and not field.pydantic_only
+                    field_name not in new_kwargs
+                    and field.has_default(use_server=False)
+                    and not field.pydantic_only
             ):
                 new_kwargs[field_name] = field.get_default()
             # clear fields with server_default set as None