Added CSRF middleware to default settings and updated docs.

Updated docs to reflect the change, and the fact that using the
two separate middleware is preferred to using the combined one.



git-svn-id: http://code.djangoproject.com/svn/django/trunk@10094 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 34 insertions, 33 deletions

diff --git a/docs/ref/contrib/csrf.txt b/docs/ref/contrib/csrf.txt
index 1b6b6102de..afc86d2383 100644
--- a/docs/ref/contrib/csrf.txt
+++ b/docs/ref/contrib/csrf.txt
@@ -7,46 +7,47 @@ Cross Site Request Forgery protection
 .. module:: django.contrib.csrf
    :synopsis: Protects against Cross Site Request Forgeries
 
-The CsrfMiddleware class provides easy-to-use protection against
-`Cross Site Request Forgeries`_.  This type of attack occurs when a malicious
-Web site creates a link or form button that is intended to perform some action
-on your Web site, using the credentials of a logged-in user who is tricked
-into clicking on the link in their browser.
+The CsrfMiddleware classes provides easy-to-use protection against
+`Cross Site Request Forgeries`_.  This type of attack occurs when a
+malicious Web site creates a link or form button that is intended to
+perform some action on your Web site, using the credentials of a
+logged-in user who is tricked into clicking on the link in their
+browser.
 
 The first defense against CSRF attacks is to ensure that GET requests
-are side-effect free.  POST requests can then be protected by adding this
-middleware into your list of installed middleware.
+are side-effect free.  POST requests can then be protected by adding
+these middleware into your list of installed middleware.
 
 .. _Cross Site Request Forgeries: http://www.squarefree.com/securitytips/web-developers.html#CSRF
 
 How to use it
 =============
 
-Add the middleware ``'django.contrib.csrf.middleware.CsrfMiddleware'`` to
-your list of middleware classes, :setting:`MIDDLEWARE_CLASSES`. It needs to process
-the response after the SessionMiddleware, so must come before it in the
-list. It also must process the response before things like compression
-happen to the response, so it must come after GZipMiddleware in the
-list.
+Add the middleware
+``'django.contrib.csrf.middleware.CsrfViewMiddleware'`` and
+``'django.contrib.csrf.middleware.CsrfResponseMiddleware'`` to your
+list of middleware classes,
+:setting:`MIDDLEWARE_CLASSES`. ``CsrfResponseMiddleware`` needs to
+process the response after the ``SessionMiddleware``, so must come
+before it in the list.  It also must process the response before
+things like compression happen to the response, so it must come after
+``GZipMiddleware`` in the list.
 
-The ``CsrfMiddleware`` class is actually composed of two middleware:
-``CsrfViewMiddleware`` which performs the checks on incoming requests,
-and ``CsrfResponseMiddleware`` which performs post-processing of the
-result.  This allows the individual components to be used and/or
-replaced instead of using ``CsrfMiddleware``.
+The ``CsrfMiddleware`` class, which combines the two classes, is also
+available, for backwards compatibility with Django 1.0.
 
 .. versionchanged:: 1.1
-    (previous versions of Django did not provide these two components
-    of ``CsrfMiddleware`` as described above)
+    previous versions of Django did not provide these two components
+    of ``CsrfMiddleware`` as described above.
 
 Exceptions
 ----------
 
 .. versionadded:: 1.1
 
-To manually exclude a view function from being handled by the
-CsrfMiddleware, you can use the ``csrf_exempt`` decorator, found in
-the ``django.contrib.csrf.middleware`` module. For example::
+To manually exclude a view function from being handled by either of
+the two CSRF middleware, you can use the ``csrf_exempt`` decorator,
+found in the ``django.contrib.csrf.middleware`` module. For example::
 
     from django.contrib.csrf.middleware import csrf_exempt
 
@@ -54,12 +55,12 @@ the ``django.contrib.csrf.middleware`` module. For example::
         return HttpResponse('Hello world')
     my_view = csrf_exempt(my_view)
 
-Like the middleware itself, the ``csrf_exempt`` decorator is composed
-of two parts: a ``csrf_view_exempt`` decorator and a
-``csrf_response_exempt`` decorator, found in the same module.  These
-disable the view protection mechanism (``CsrfViewMiddleware``) and the
-response post-processing (``CsrfResponseMiddleware``) respectively.
-They can be used individually if required.
+Like the middleware, the ``csrf_exempt`` decorator is composed of two
+parts: a ``csrf_view_exempt`` decorator and a ``csrf_response_exempt``
+decorator, found in the same module.  These disable the view
+protection mechanism (``CsrfViewMiddleware``) and the response
+post-processing (``CsrfResponseMiddleware``) respectively.  They can
+be used individually if required.
 
 You don't have to worry about doing this for most AJAX views. Any
 request sent with "X-Requested-With: XMLHttpRequest" is automatically
@@ -68,7 +69,7 @@ exempt. (See the next section.)
 How it works
 ============
 
-CsrfMiddleware does two things:
+The CSRF middleware do two things:
 
 1. It modifies outgoing requests by adding a hidden form field to all
    'POST' forms, with the name 'csrfmiddlewaretoken' and a value which is
@@ -112,9 +113,9 @@ don't trust content within the same domain or subdomains.)
 Limitations
 ===========
 
-CsrfMiddleware requires Django's session framework to work. If you have
-a custom authentication system that manually sets cookies and the like,
-it won't help you.
+These middleware require Django's session framework to work. If you
+have a custom authentication system that manually sets cookies and the
+like, it won't help you.
 
 If your app creates HTML pages and forms in some unusual way, (e.g.
 it sends fragments of HTML in JavaScript document.write statements)