Path 1: 1 calls (1.0)

→ f test_after_request_processing..index..foo def (1)

↩ return test_after_request_processing..index..foo def (1)

4 run 2 not run

1def after_this_request(f: ft.AfterRequestCallable) -> ft.AfterRequestCallable:
2    """Executes a function after this request.  This is useful to modify
3    response objects.  The function is passed the response object and has
4    to return the same or a new one.
5
6    Example::
7
8        @app.route('/')
9        def index():
10            @after_this_request
11            def add_header(response):
12                response.headers['X-Foo'] = 'Parachute'
13                return response
14            return 'Hello World!'
15
16    This is more useful if a function other than the view function wants to
17    modify a response.  For instance think of a decorator that wants to add
18    some headers without converting the return value into a response object.
19
20    .. versionadded:: 0.9
21    """
22    ctx = _cv_request.get(None)
23
24    if ctx is None:
25        raise RuntimeError(
26            "'after_this_request' can only be used when a request"
27            " context is active, such as in a view function."
28        )
29
30    ctx._after_request_functions.append(f)
31    return f