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Minute 4¶

Object #3. Context¶

All handlers receive this as the third argument i.e. ...(..., ..., c: Context) to help with preserving state across multiple handlers (i.e. from when a request is received to when a response is sent).

• c.keep(alias: str, value: any) -> Save something that can be retrieved via Python descriptor semantics. i.e. c.alias will return the kept value.

from functools import wraps


def example(func):
    @wraps(func)
    async def wrapper(req, res, ctx):
        ctx.keep('user_id', 1986)
        func(req, res, ctx)
    return wrapper


@example
def get_user(req, res, ctx):
    assert ctx.user_id == 1986

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