Fixed #34112 -- Added async-compatible interface to Model methods.

Thanks Adam Johnson for the review.

django/db/models/base.py

@@ -4,6 +4,8 @@ import warnings
 from functools import partialmethod
 from itertools import chain
 
+from asgiref.sync import sync_to_async
+
 import django
 from django.apps import apps
 from django.conf import settings
@@ -737,6 +739,9 @@ class Model(metaclass=ModelBase):
 
         self._state.db = db_instance._state.db
 
+    async def arefresh_from_db(self, using=None, fields=None):
+        return await sync_to_async(self.refresh_from_db)(using=using, fields=fields)
+
     def serializable_value(self, field_name):
         """
         Return the value of the field name for this instance. If the field is
@@ -810,6 +815,18 @@ class Model(metaclass=ModelBase):
 
     save.alters_data = True
 
+    async def asave(
+        self, force_insert=False, force_update=False, using=None, update_fields=None
+    ):
+        return await sync_to_async(self.save)(
+            force_insert=force_insert,
+            force_update=force_update,
+            using=using,
+            update_fields=update_fields,
+        )
+
+    asave.alters_data = True
+
     def save_base(
         self,
         raw=False,
@@ -1111,6 +1128,14 @@ class Model(metaclass=ModelBase):
 
     delete.alters_data = True
 
+    async def adelete(self, using=None, keep_parents=False):
+        return await sync_to_async(self.delete)(
+            using=using,
+            keep_parents=keep_parents,
+        )
+
+    adelete.alters_data = True
+
     def _get_FIELD_display(self, field):
         value = getattr(self, field.attname)
         choices_dict = dict(make_hashable(field.flatchoices))