[5.2.x] Fixed #35167 -- Delegated to super() in JSONField.get_db_prep_save().

Avoids reports of bulk_update() sending Cast expressions
to JSONField.get_prep_value().

Co-authored-by: Simon Charette <charette.s@gmail.com>

Backport of 0bf412111be686b6b23e00863f5d449d63557dbf from main.

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/model_fields/models.py b/tests/model_fields/models.py
index fdea06b23d..299e927615 100644
--- a/tests/model_fields/models.py
+++ b/tests/model_fields/models.py
@@ -430,6 +430,17 @@ class RelatedJSONModel(models.Model):
         required_db_features = {"supports_json_field"}
 
 
+class CustomSerializationJSONModel(models.Model):
+    class StringifiedJSONField(models.JSONField):
+        def get_prep_value(self, value):
+            return json.dumps(value, cls=self.encoder)
+
+    json_field = StringifiedJSONField()
+
+    class Meta:
+        required_db_features = {"supports_json_field"}
+
+
 class AllFieldsModel(models.Model):
     big_integer = models.BigIntegerField()
     binary = models.BinaryField()