Django - redirect to version with www

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Is in Django a simple way to redirect everything from domain without www to version with it? I mean from http:// example.com to http:// www.example.com.

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I have it. It is PREPEND_WWW in settings.

https://docs.djangoproject.com/en/dev/ref/settings/?from=olddocs#prepend-www

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As docs say

If PREPEND_WWW is True, URLs that lack a leading “www.” will be redirected to the same URL with a leading “www.”

By default PREPEND_WWW is set to False. You can change that to True in settings.

PREPEND_WWW = True

To make this work, You have to include CommonMiddleware in Your middlewares

MIDDLEWARE_CLASSES = (
    'django.middleware.common.CommonMiddleware',
)

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You can also skip prefix via proper DNS configuration.