diff --git a/rest_framework/schemas/openapi.py b/rest_framework/schemas/openapi.py
index 5e9d59f8bf..389f4e1814 100644
--- a/rest_framework/schemas/openapi.py
+++ b/rest_framework/schemas/openapi.py
@@ -385,6 +385,8 @@ def map_field(self, field):
'items': self.map_field(field.child_relation)
}
if isinstance(field, serializers.PrimaryKeyRelatedField):
+ if getattr(field, "pk_field", False):
+ return self.map_field(field=field.pk_field)
model = getattr(field.queryset, 'model', None)
if model is not None:
model_field = model._meta.pk
diff --git a/tests/schemas/test_openapi.py b/tests/schemas/test_openapi.py
index daa035a3f3..68a8cb5437 100644
--- a/tests/schemas/test_openapi.py
+++ b/tests/schemas/test_openapi.py
@@ -18,6 +18,7 @@
from rest_framework.request import Request
from rest_framework.schemas.openapi import AutoSchema, SchemaGenerator
+from ..models import BasicModel
from . import views
@@ -129,6 +130,22 @@ class Meta:
assert data['properties']['ro_field']['nullable'], "ro_field nullable must be true"
assert data['properties']['ro_field']['readOnly'], "ro_field read_only must be true"
+ def test_primary_key_related_field(self):
+ class PrimaryKeyRelatedFieldSerializer(serializers.Serializer):
+ basic = serializers.PrimaryKeyRelatedField(queryset=BasicModel.objects.all())
+ uuid = serializers.PrimaryKeyRelatedField(queryset=BasicModel.objects.all(),
+ pk_field=serializers.UUIDField())
+ char = serializers.PrimaryKeyRelatedField(queryset=BasicModel.objects.all(),
+ pk_field=serializers.CharField())
+
+ serializer = PrimaryKeyRelatedFieldSerializer()
+ inspector = AutoSchema()
+
+ data = inspector.map_serializer(serializer=serializer)
+ assert data['properties']['basic']['type'] == "integer"
+ assert data['properties']['uuid']['format'] == "uuid"
+ assert data['properties']['char']['type'] == "string"
+
@pytest.mark.skipif(uritemplate is None, reason='uritemplate not installed.')
class TestOperationIntrospection(TestCase):
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