KeyError in sanic_ext's clean_data function during /v1/api/user/register route handling

[764069075]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

When processing the /v1/api/user/register route, a KeyError: 'a' occurs during the validation process of sanic_ext. Specifically, in the clean_data function located in sanic_ext/extras/validation/clean.py, the code attempts to process each key-value pair of the request data using hints[key], but the hints dictionary does not contain the key 'a'. This indicates that 'a' is an extra field, and the sanic_ext validation flow does not handle this extra field correctly. Although extra = Extra.ignore might have been set in the UserRegisterSchema, the internal validation logic of sanic_ext in the clean_data function does not adhere to this setting.

Code snippet

from pydantic import BaseModel

class UserRegisterSchema(BaseModel):
class Config:
extra = ‘ignore’

@user_bp.post("/register")
@Validate(form= UserRegisterSchema)
async def register_user_handle(request: Request, body: UserRegisterSchema) -> HTTPResponse:

Expected Behavior

The sanic_ext validation process should handle extra fields according to the extra = Extra.ignore setting in the UserRegisterSchema, and no KeyError should occur. The clean_data function should either skip extra fields or handle them gracefully without raising a KeyError.

How do you run Sanic?

Sanic CLI

Operating System

Windows

Sanic Version

24.12.0

Additional context

1. Set up a Sanic application with sanic_ext installed.
2. Define a UserRegisterSchema with extra = Extra.ignore in its Config class.
3. Create a route /v1/api/user/register with validation using sanic_ext.
4. Send a request to /v1/api/user/register that includes an extra field 'a' in the request data.
5. Observe the error when sanic_ext attempts to validate the request data in the clean_data function.

[goodki-d]

This issue rather belongs to https://github.com/sanic-org/sanic-ext repo.
Also this seems duplicate of sanic-org/sanic-ext#247.