Commit ae8e9738 authored by Aymeric Augustin's avatar Aymeric Augustin
Browse files

Fixed #12502 -- Improved middleware diagram.

parent 49519328

docs/topics/http/_images/middleware.graffle

0 → 100644
+957 −0
Original line number Diff line number Diff line 
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\f0\fs24 \cf0 AuthenticationMiddleware}</string>

			</dict>

		</dict>

		<dict>

			<key>Bounds</key>

			<string>{{72, 234}, {432, 27}}</string>

			<key>Class</key>

			<string>ShapedGraphic</string>

			<key>ID</key>

			<integer>8</integer>

			<key>Magnets</key>

			<array>

				<string>{0, 1}</string>

				<string>{0, -1}</string>

				<string>{1, 0}</string>

				<string>{-1, 0}</string>

			</array>

			<key>Shape</key>

			<string>Rectangle</string>

			<key>Style</key>

			<dict>

				<key>fill</key>

				<dict>

					<key>FillType</key>

					<integer>2</integer>

					<key>GradientAngle</key>

					<real>90</real>

					<key>GradientColor</key>

					<dict>

						<key>w</key>

						<string>0.666667</string>

					</dict>

				</dict>

				<key>stroke</key>

				<dict>

					<key>CornerRadius</key>

					<real>5</real>

				</dict>

			</dict>

			<key>Text</key>

			<dict>

				<key>Text</key>

				<string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340

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{\colortbl;\red255\green255\blue255;}

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\f0\fs24 \cf0 CsrfViewMiddleware}</string>

			</dict>

		</dict>

		<dict>

			<key>Bounds</key>

			<string>{{72, 189}, {432, 27}}</string>

			<key>Class</key>

			<string>ShapedGraphic</string>

			<key>ID</key>

			<integer>7</integer>

			<key>Magnets</key>

			<array>

				<string>{0, 1}</string>

				<string>{0, -1}</string>

				<string>{1, 0}</string>

				<string>{-1, 0}</string>

			</array>

			<key>Shape</key>

			<string>Rectangle</string>

			<key>Style</key>

			<dict>

				<key>fill</key>

				<dict>

					<key>FillType</key>

					<integer>2</integer>

					<key>GradientAngle</key>

					<real>90</real>

					<key>GradientColor</key>

					<dict>

						<key>w</key>

						<string>0.666667</string>

					</dict>

				</dict>

				<key>stroke</key>

				<dict>

					<key>CornerRadius</key>

					<real>5</real>

				</dict>

			</dict>

			<key>Text</key>

			<dict>

				<key>Text</key>

				<string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340

\cocoascreenfonts1{\fonttbl\f0\fmodern\fcharset0 Courier;}

{\colortbl;\red255\green255\blue255;}

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\f0\fs24 \cf0 SessionMiddleware}</string>

			</dict>

		</dict>

		<dict>

			<key>Bounds</key>

			<string>{{72, 144}, {432, 27}}</string>

			<key>Class</key>

			<string>ShapedGraphic</string>

			<key>ID</key>

			<integer>6</integer>

			<key>Magnets</key>

			<array>

				<string>{0, 1}</string>

				<string>{0, -1}</string>

				<string>{1, 0}</string>

				<string>{-1, 0}</string>

			</array>

			<key>Shape</key>

			<string>Rectangle</string>

			<key>Style</key>

			<dict>

				<key>fill</key>

				<dict>

					<key>FillType</key>

					<integer>2</integer>

					<key>GradientAngle</key>

					<real>90</real>

					<key>GradientColor</key>

					<dict>

						<key>w</key>

						<string>0.666667</string>

					</dict>

				</dict>

				<key>stroke</key>

				<dict>

					<key>CornerRadius</key>

					<real>5</real>

				</dict>

			</dict>

			<key>Text</key>

			<dict>

				<key>Text</key>

				<string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340

\cocoascreenfonts1{\fonttbl\f0\fmodern\fcharset0 Courier;}

{\colortbl;\red255\green255\blue255;}

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\f0\fs24 \cf0 CommonMiddleware}</string>

			</dict>

		</dict>

	</array>

	<key>GridInfo</key>

	<dict>

		<key>ShowsGrid</key>

		<string>YES</string>

		<key>SnapsToGrid</key>

		<string>YES</string>

	</dict>

	<key>GuidesLocked</key>

	<string>NO</string>

	<key>GuidesVisible</key>

	<string>YES</string>

	<key>HPages</key>

	<integer>1</integer>

	<key>ImageCounter</key>

	<integer>1</integer>

	<key>KeepToScale</key>

	<false/>

	<key>Layers</key>

	<array>

		<dict>

			<key>Lock</key>

			<string>NO</string>

			<key>Name</key>

			<string>Calque 1</string>

			<key>Print</key>

			<string>YES</string>

			<key>View</key>

			<string>YES</string>

		</dict>

	</array>

	<key>LayoutInfo</key>

	<dict>

		<key>Animate</key>

		<string>NO</string>

		<key>circoMinDist</key>

		<real>18</real>

		<key>circoSeparation</key>

		<real>0.0</real>

		<key>layoutEngine</key>

		<string>dot</string>

		<key>neatoSeparation</key>

		<real>0.0</real>

		<key>twopiSeparation</key>

		<real>0.0</real>

	</dict>

	<key>LinksVisible</key>

	<string>NO</string>

	<key>MagnetsVisible</key>

	<string>NO</string>

	<key>MasterSheets</key>

	<array/>

	<key>ModificationDate</key>

	<string>2012-12-09 19:48:54 +0000</string>

	<key>Modifier</key>

	<string>Aymeric Augustin</string>

	<key>NotesVisible</key>

	<string>NO</string>

	<key>Orientation</key>

	<integer>2</integer>

	<key>OriginVisible</key>

	<string>NO</string>

	<key>PageBreaks</key>

	<string>YES</string>

	<key>PrintInfo</key>

	<dict>

		<key>NSBottomMargin</key>

		<array>

			<string>float</string>

			<string>41</string>

		</array>

		<key>NSHorizonalPagination</key>

		<array>

			<string>coded</string>

			<string>BAtzdHJlYW10eXBlZIHoA4QBQISEhAhOU051bWJlcgCEhAdOU1ZhbHVlAISECE5TT2JqZWN0AIWEASqEhAFxlwCG</string>

		</array>

		<key>NSLeftMargin</key>

		<array>

			<string>float</string>

			<string>18</string>

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		<key>NSPaperSize</key>

		<array>

			<string>size</string>

			<string>{595.28997802734375, 841.8900146484375}</string>

		</array>

		<key>NSPrintReverseOrientation</key>

		<array>

			<string>int</string>

			<string>0</string>

		</array>

		<key>NSRightMargin</key>

		<array>

			<string>float</string>

			<string>18</string>

		</array>

		<key>NSTopMargin</key>

		<array>

			<string>float</string>

			<string>18</string>

		</array>

	</dict>

	<key>PrintOnePage</key>

	<false/>

	<key>ReadOnly</key>

	<string>NO</string>

	<key>RowAlign</key>

	<integer>1</integer>

	<key>RowSpacing</key>

	<real>36</real>

	<key>SheetTitle</key>

	<string>Canevas 1</string>

	<key>SmartAlignmentGuidesActive</key>

	<string>YES</string>

	<key>SmartDistanceGuidesActive</key>

	<string>YES</string>

	<key>UniqueID</key>

	<integer>1</integer>

	<key>UseEntirePage</key>

	<false/>

	<key>VPages</key>

	<integer>1</integer>

	<key>WindowInfo</key>

	<dict>

		<key>CurrentSheet</key>

		<integer>0</integer>

		<key>ExpandedCanvases</key>

		<array/>

		<key>Frame</key>

		<string>{{248, 4}, {694, 874}}</string>

		<key>ListView</key>

		<true/>

		<key>OutlineWidth</key>

		<integer>142</integer>

		<key>RightSidebar</key>

		<false/>

		<key>ShowRuler</key>

		<true/>

		<key>Sidebar</key>

		<true/>

		<key>SidebarWidth</key>

		<integer>120</integer>

		<key>VisibleRegion</key>

		<string>{{0, 0}, {559, 735}}</string>

		<key>Zoom</key>

		<real>1</real>

		<key>ZoomValues</key>

		<array>

			<array>

				<string>Canevas 1</string>

				<real>1</real>

				<real>1</real>

			</array>

		</array>

	</dict>

</dict>

</plist>

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docs/topics/http/middleware.txt

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@@ -32,17 +32,20 @@ created by :djadmin:`django-admin.py startproject <startproject>`:: 
        'django.contrib.messages.middleware.MessageMiddleware',

    )



During the request phases (:meth:`process_request` and :meth:`process_view`

middleware), Django applies middleware in the order it's defined in

During the request phases (:meth:`process_request` and :meth:`process_view`),

Django applies middleware in the order it's defined in

:setting:`MIDDLEWARE_CLASSES`, top-down. During the response phases

(:meth:`process_response` and :meth:`process_exception` middleware), the

classes are applied in reverse order, from the bottom up. You can think of it

like an onion: each middleware class is a "layer" that wraps the view:



.. image:: _images/middleware.png

   :width: 502

   :height: 417

   :alt: Middleware application order.

(:meth:`process_template_response`, :meth:`process_response`, and

:meth:`process_exception`), the classes are applied in reverse order, from the

bottom up.



.. image:: _images/middleware.svg

   :alt: middleware application order

   :width: 480

   :height: 408



If you prefer, you can also think of it like an onion: each middleware class

is a "layer" that wraps the view.



A Django installation doesn't require any middleware -- e.g.,

:setting:`MIDDLEWARE_CLASSES` can be empty, if you'd like -- but it's strongly