Fixed #27654 -- Propagated alters_data attribute to callables overridden in subclasses.

Thanks Shai Berger and Adam Johnson for reviews and the implementation
idea.

1 files changed, 2 insertions, 1 deletions

diff --git a/django/db/models/fields/files.py b/django/db/models/fields/files.py
index 3d1291a221..7a99b12691 100644
--- a/django/db/models/fields/files.py
+++ b/django/db/models/fields/files.py
@@ -10,10 +10,11 @@ from django.core.files.utils import validate_file_name
 from django.db.models import signals
 from django.db.models.fields import Field
 from django.db.models.query_utils import DeferredAttribute
+from django.db.models.utils import AltersData
 from django.utils.translation import gettext_lazy as _
 
 
-class FieldFile(File):
+class FieldFile(File, AltersData):
     def __init__(self, instance, field, name):
         super().__init__(None, name)
         self.instance = instance