feat: Enable FieldExtension support for experimental pydantic types

CHANGELOG.md

@@ -8159,7 +8159,6 @@ from typing import Generic, Sequence, TypeVar
 
 import strawberry
 
-
 T = TypeVar("T")
 
 
@@ -10125,7 +10124,6 @@ from strawberry.asgi import GraphQL
 from strawberry.subscriptions import GRAPHQL_TRANSPORT_WS_PROTOCOL
 from api.schema import schema
 
-
 app = GraphQL(schema, subscription_protocols=[GRAPHQL_TRANSPORT_WS_PROTOCOL])
 ```
 
@@ -10735,7 +10733,6 @@ import strawberry
 from strawberry.schema import default_validation_rules
 from strawberry.tools import depth_limit_validator
 
-
 # Add the depth limit validator to the list of default validation rules
 validation_rules = default_validation_rules + [depth_limit_validator(3)]
 
@@ -12289,7 +12286,6 @@ from opentelemetry.sdk.trace.export import (
 import strawberry
 from strawberry.extensions.tracing import OpenTelemetryExtension
 
-
 trace.set_tracer_provider(TracerProvider())
 trace.get_tracer_provider().add_span_processor(
     SimpleExportSpanProcessor(ConsoleSpanExporter())

RELEASE.md

@@ -0,0 +1,66 @@
+Release type: patch
+
+This release adds support for field extensions in experimental pydantic types.
+
+Previously, when using `@strawberry.experimental.pydantic.type()` decorator, field extensions defined with `strawberry.field(extensions=[...])` were not being propagated to the generated Strawberry fields. This meant extensions like authentication, caching, or result transformation couldn't be used with pydantic-based types.
+
+This fix ensures that extensions are properly preserved when converting pydantic fields to Strawberry fields, enabling the full power of field extensions across the pydantic integration.
+
+Examples:
+
+**Permission-based field masking:**
+
+```python
+from pydantic import BaseModel
+from typing import Optional
+import strawberry
+from strawberry.experimental.pydantic import type as pyd_type
+from strawberry.extensions.field_extension import FieldExtension
+
+
+class PermissionExtension(FieldExtension):
+    def resolve(self, next_, source, info, **kwargs):
+        # Check permission, return None if denied
+        if not check_field_access(info.context.user, info.field_name, source.id):
+            return None
+        return next_(source, info, **kwargs)
+
+
+class UserModel(BaseModel):
+    id: int
+    fname: str
+    email: str
+    phone: str
+
+
+perm_ext = PermissionExtension()
+
+
+@pyd_type(model=UserModel)
+class UserGQL:
+    # Public fields - just use auto
+    id: strawberry.auto
+    fname: strawberry.auto
+
+    # Protected fields - attach extension
+    email: Optional[str] = strawberry.field(extensions=[perm_ext])
+    phone: Optional[str] = strawberry.field(extensions=[perm_ext])
+```
+
+**Basic transformation extension:**
+
+```python
+class UpperCaseExtension(FieldExtension):
+    def resolve(self, next_, source, info, **kwargs):
+        result = next_(source, info, **kwargs)
+        return str(result).upper()
+
+
+class ProductModel(BaseModel):
+    name: str
+
+
+@pyd_type(model=ProductModel)
+class Product:
+    name: str = strawberry.field(extensions=[UpperCaseExtension()])
+```

docs/general/subscriptions.md

@@ -335,7 +335,6 @@ from strawberry.aiohttp.views import GraphQLView
 from strawberry.subscriptions import GRAPHQL_TRANSPORT_WS_PROTOCOL, GRAPHQL_WS_PROTOCOL
 from api.schema import schema
 
-
 view = GraphQLView(
     schema, subscription_protocols=[GRAPHQL_TRANSPORT_WS_PROTOCOL, GRAPHQL_WS_PROTOCOL]
 )
@@ -348,7 +347,6 @@ from strawberry.asgi import GraphQL
 from strawberry.subscriptions import GRAPHQL_TRANSPORT_WS_PROTOCOL, GRAPHQL_WS_PROTOCOL
 from api.schema import schema
 
-
 app = GraphQL(
     schema,
     subscription_protocols=[
@@ -374,7 +372,6 @@ django_asgi_app = get_asgi_application()
 # for the schema.
 from mysite.graphql import schema
 
-
 application = GraphQLProtocolTypeRouter(
     schema,
     django_application=django_asgi_app,

docs/guides/pagination/connections.md

@@ -89,7 +89,6 @@ from typing import Generic, TypeVar
 
 import strawberry
 
-
 GenericType = TypeVar("GenericType")
 
 
@@ -116,7 +115,6 @@ from typing import Generic, TypeVar
 
 import strawberry
 
-
 GenericType = TypeVar("GenericType")
 
 
@@ -167,7 +165,6 @@ from typing import Generic, TypeVar
 
 import strawberry
 
-
 GenericType = TypeVar("GenericType")
 
 

docs/integrations/channels.md

@@ -238,7 +238,6 @@ django_asgi_app = get_asgi_application()
 # for the schema.
 from mysite.graphql import schema
 
-
 application = GraphQLProtocolTypeRouter(
     schema,
     django_application=django_asgi_app,
@@ -273,7 +272,6 @@ django_asgi_app = get_asgi_application()
 from chat import routing
 from mysite.graphql import schema
 
-
 gql_http_consumer = AuthMiddlewareStack(GraphQLHTTPConsumer.as_asgi(schema=schema))
 gql_ws_consumer = GraphQLWSConsumer.as_asgi(schema=schema)
 

strawberry/experimental/pydantic/object_type.py

@@ -98,6 +98,7 @@ def _build_dataclass_creation_fields(
                 existing_field.permission_classes if existing_field else []
             ),
             directives=existing_field.directives if existing_field else (),
+            extensions=existing_field.extensions if existing_field else [],
             metadata=existing_field.metadata if existing_field else {},
         )