Description
DTOs does not seem to support generic types.
URL to code causing the issue
No response
MCVE
from dataclasses import dataclass
from typing import Generic, TypeVar
from litestar import Litestar
from litestar import post
from litestar.dto import DTOConfig, DataclassDTO, DTOData
T = TypeVar("T")
@dataclass
class Foo(Generic[T]):
foo: T
FooDTO = DataclassDTO[Foo[int]]
@post("/foo", dto=FooDTO)
async def foo_handler(data: DTOData[Foo[int]]) -> Foo[int]:
return data.create_instance()
app = Litestar([foo_handler])Steps to reproduce
Run `litestar run`.Screenshots
No response
Logs
Traceback (most recent call last):
File "/home/guacs/open-source/litestar/.venv/bin/litestar", line 8, in <module>
sys.exit(run_cli())
File "/home/guacs/open-source/litestar/litestar/__main__.py", line 6, in run_cli
litestar_group()
File "/home/guacs/open-source/litestar/.venv/lib/python3.8/site-packages/click/core.py", line 1157, in __call__
return self.main(*args, **kwargs)
File "/home/guacs/open-source/litestar/.venv/lib/python3.8/site-packages/rich_click/rich_command.py", line 125, in main
with self.make_context(prog_name, args, **extra) as ctx:
File "/home/guacs/open-source/litestar/litestar/cli/_utils.py", line 242, in make_context
self._prepare(ctx)
File "/home/guacs/open-source/litestar/litestar/cli/_utils.py", line 224, in _prepare
env = ctx.obj = LitestarEnv.from_env(ctx.params.get("app_path"), ctx.params.get("app_dir"))
File "/home/guacs/open-source/litestar/litestar/cli/_utils.py", line 122, in from_env
loaded_app = _autodiscover_app(cwd)
File "/home/guacs/open-source/litestar/litestar/cli/_utils.py", line 332, in _autodiscover_app
module = importlib.import_module(import_path)
File "/home/guacs/.pyenv/versions/3.8.17/lib/python3.8/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 843, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/guacs/open-source/litestar/app.py", line 25, in <module>
app = Litestar([foo_handler])
File "/home/guacs/open-source/litestar/litestar/app.py", line 447, in __init__
self.register(route_handler)
File "/home/guacs/open-source/litestar/litestar/app.py", line 623, in register
route_handler.on_registration(self)
File "/home/guacs/open-source/litestar/litestar/handlers/http_handlers/base.py", line 492, in on_registration
super().on_registration(app)
File "/home/guacs/open-source/litestar/litestar/handlers/base.py", line 525, in on_registration
self.resolve_data_dto()
File "/home/guacs/open-source/litestar/litestar/handlers/base.py", line 451, in resolve_data_dto
data_dto.create_for_field_definition(
File "/home/guacs/open-source/litestar/litestar/dto/base_dto.py", line 176, in create_for_field_definition
raise InvalidAnnotationException(
litestar.exceptions.dto_exceptions.InvalidAnnotationException: DTO narrowed with 'app.Foo[int]', handler type is 'litestar.dto.data_structures.DTOData[app.Foo[int]]'Litestar Version
main
Platform
- Linux
- Mac
- Windows
- Other (Please specify in the description above)
litestar-org / litestar
Production-ready, Light, Flexible and Extensible ASGI API framework | Effortlessly Build Performant APIs
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