Source code for django.views.decorators.vary

from functools import wraps

from asgiref.sync import iscoroutinefunction

from django.utils.cache import patch_vary_headers


[docs] def vary_on_headers(*headers): """ A view decorator that adds the specified headers to the Vary header of the response. Usage: @vary_on_headers('Cookie', 'Accept-language') def index(request): ... Note that the header names are not case-sensitive. """ def decorator(func): if iscoroutinefunction(func): async def _view_wrapper(request, *args, **kwargs): response = await func(request, *args, **kwargs) patch_vary_headers(response, headers) return response else: def _view_wrapper(request, *args, **kwargs): response = func(request, *args, **kwargs) patch_vary_headers(response, headers) return response return wraps(func)(_view_wrapper) return decorator
vary_on_cookie = vary_on_headers("Cookie") vary_on_cookie.__doc__ = ( 'A view decorator that adds "Cookie" to the Vary header of a response. This ' "indicates that a page's contents depends on cookies." )