Refs #21286 -- Fixed YAML serialization of TimeField primary key.

Handling for PyYAML not being able to serialize `datetime.time`
values is moved from `handle_field` to `_value_from_field` as only
non-primary key, non-relation fields are passed into `handle_field`.

2 files changed, 5 insertions, 3 deletions

diff --git a/tests/serializers/models/data.py b/tests/serializers/models/data.py
index 212ea0e06f..bb76bfba48 100644
--- a/tests/serializers/models/data.py
+++ b/tests/serializers/models/data.py
@@ -245,8 +245,9 @@ class SmallPKData(models.Model):
 # class TextPKData(models.Model):
 #     data = models.TextField(primary_key=True)
 
-# class TimePKData(models.Model):
-#    data = models.TimeField(primary_key=True)
+
+class TimePKData(models.Model):
+    data = models.TimeField(primary_key=True)
 
 
 class UUIDData(models.Model):
diff --git a/tests/serializers/test_data.py b/tests/serializers/test_data.py
index 33ea3458de..1f8f38ba0f 100644
--- a/tests/serializers/test_data.py
+++ b/tests/serializers/test_data.py
@@ -69,6 +69,7 @@ from .models import (
     Tag,
     TextData,
     TimeData,
+    TimePKData,
     UniqueAnchor,
     UUIDData,
     UUIDDefaultData,
@@ -390,7 +391,7 @@ The end.""",
     # It contains line breaks.
     # Several of them.
     # The end."""),
-    # (pk_obj, 770, TimePKData, datetime.time(10, 42, 37)),
+    (pk_obj, 770, TimePKData, datetime.time(10, 42, 37)),
     (pk_obj, 791, UUIDData, uuid_obj),
     (fk_obj, 792, FKToUUID, uuid_obj),
     (pk_obj, 793, UUIDDefaultData, uuid_obj),