Tweak caching decorators/utility functions xrefs.
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@ -591,8 +591,8 @@ Note that unlike a dictionary, ``del`` doesn't raise ``KeyError`` if the header
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field doesn't exist.
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field doesn't exist.
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For setting the ``Cache-Control`` and ``Vary`` header fields, it is recommended
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For setting the ``Cache-Control`` and ``Vary`` header fields, it is recommended
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to use the :meth:`~django.utils.cache.patch_cache_control` and
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to use the :func:`~django.utils.cache.patch_cache_control` and
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:meth:`~django.utils.cache.patch_vary_headers` methods from
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:func:`~django.utils.cache.patch_vary_headers` methods from
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:mod:`django.utils.cache`, since these fields can have multiple, comma-separated
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:mod:`django.utils.cache`, since these fields can have multiple, comma-separated
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values. The "patch" methods ensure that other values, e.g. added by a
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values. The "patch" methods ensure that other values, e.g. added by a
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middleware, are not removed.
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middleware, are not removed.
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@ -997,8 +997,8 @@ produces different content based on some difference in request headers -- such
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as a cookie, or a language, or a user-agent -- you'll need to use the ``Vary``
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as a cookie, or a language, or a user-agent -- you'll need to use the ``Vary``
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header to tell caching mechanisms that the page output depends on those things.
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header to tell caching mechanisms that the page output depends on those things.
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To do this in Django, use the convenient ``vary_on_headers`` view decorator,
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To do this in Django, use the convenient
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like so::
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:func:`django.views.decorators.vary.vary_on_headers` view decorator, like so::
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from django.views.decorators.vary import vary_on_headers
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from django.views.decorators.vary import vary_on_headers
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@ -1027,8 +1027,9 @@ the user-agent ``Mozilla`` and the cookie value ``foo=bar`` will be considered
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different from a request with the user-agent ``Mozilla`` and the cookie value
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different from a request with the user-agent ``Mozilla`` and the cookie value
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``foo=ham``.
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``foo=ham``.
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Because varying on cookie is so common, there's a ``vary_on_cookie``
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Because varying on cookie is so common, there's a
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decorator. These two views are equivalent::
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:func:`django.views.decorators.vary.vary_on_cookie` decorator. These two views
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are equivalent::
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@vary_on_cookie
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@vary_on_cookie
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def my_view(request):
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def my_view(request):
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@ -1041,7 +1042,7 @@ decorator. These two views are equivalent::
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The headers you pass to ``vary_on_headers`` are not case sensitive;
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The headers you pass to ``vary_on_headers`` are not case sensitive;
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``"User-Agent"`` is the same thing as ``"user-agent"``.
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``"User-Agent"`` is the same thing as ``"user-agent"``.
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You can also use a helper function, ``django.utils.cache.patch_vary_headers``,
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You can also use a helper function, :func:`django.utils.cache.patch_vary_headers`,
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directly. This function sets, or adds to, the ``Vary header``. For example::
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directly. This function sets, or adds to, the ``Vary header``. For example::
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from django.utils.cache import patch_vary_headers
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from django.utils.cache import patch_vary_headers
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@ -1090,8 +1091,9 @@ exclusive. The decorator ensures that the "public" directive is removed if
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"private" should be set (and vice versa). An example use of the two directives
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"private" should be set (and vice versa). An example use of the two directives
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would be a blog site that offers both private and public entries. Public
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would be a blog site that offers both private and public entries. Public
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entries may be cached on any shared cache. The following code uses
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entries may be cached on any shared cache. The following code uses
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``patch_cache_control``, the manual way to modify the cache control header
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:func:`django.utils.cache.patch_cache_control`, the manual way to modify the
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(it is internally called by the ``cache_control`` decorator)::
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cache control header (it is internally called by the ``cache_control``
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decorator)::
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from django.views.decorators.cache import patch_cache_control
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from django.views.decorators.cache import patch_cache_control
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from django.views.decorators.vary import vary_on_cookie
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from django.views.decorators.vary import vary_on_cookie
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