Sybren A. Stüvel
203c6418fd
This produces a 'Vary: X-Requested-With' header on the response of decorated view functions, which indicates to the browser (or intermediate proxy servers) that the response may/will will be different for XHR and non-XHR requests.
30 lines
755 B
Python
30 lines
755 B
Python
import functools
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import flask
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def add_response_headers(headers: dict):
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"""This decorator adds the headers passed in to the response"""
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def decorator(f):
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@functools.wraps(f)
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def decorated_function(*args, **kwargs):
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resp = flask.make_response(f(*args, **kwargs))
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h = resp.headers
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for header, value in headers.items():
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h[header] = value
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return resp
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return decorated_function
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return decorator
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def vary_xhr():
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"""View function decorator; adds HTTP header "Vary: X-Requested-With" to the response"""
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def decorator(f):
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header_adder = add_response_headers({'Vary': 'X-Requested-With'})
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return header_adder(f)
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return decorator
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