Ability to add decorators to the serve method

At the moment, there is no way to add decorators to the serve method.

For example, we can’t add the csrf_exempt decorator. It may be useful for form pages with captcha (because there is no need in csrf token).

[gasman]

Thanks @thenewguy! This looks good to me - a simple, backwards-compatible change that will allow people to solve this problem, and it doesn’t preclude building a more out-of-the-box solution in future that respects the CSRF flag without the need for a custom middleware, if there’s a desire for that.

So, in terms of the change to be made to Wagtail itself, this would just involve building, documenting and testing the find_page_for_request helper - nothing about that needs to indicate that it’s intended for use in middleware / CSRF handling. (If you were to subsequently write up a recipe detailing how to use this for CSRF control, I’d sure that would be welcomed, but probably out of scope for the main Wagtail docs and a better fit for a blog post or similar.) For the tests, we’d just need to validate that find_page_for_request returns the right result and that assertNumQueries gives 0 for any calls after the initial one.

[thenewguy]

@zerolab @gasman This is the issue/solution I was referring to. Do you like it?