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[1.5.x] Fixed #19875 - Added warnings regarding DEBUG=False and empty ALLOWED_HOSTS
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@ -468,6 +468,13 @@ template for all 404 errors when :setting:`DEBUG` is set to ``False`` (in your
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settings module). If you do create the template, add at least some dummy
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content like "Page not found".
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.. warning::
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If :setting:`DEBUG` is set to ``False``, all responses will be
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"Bad Request (400)" unless you specify the proper :setting:`ALLOWED_HOSTS`
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as well (something like ``['localhost', '127.0.0.1']`` for
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local development).
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A couple more things to note about 404 views:
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* If :setting:`DEBUG` is set to ``True`` (in your settings module) then your
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@ -823,6 +823,10 @@ It is also important to remember that when running with :setting:`DEBUG`
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turned on, Django will remember every SQL query it executes. This is useful
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when you're debugging, but it'll rapidly consume memory on a production server.
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Finally, if :setting:`DEBUG` is ``False``, you also need to properly set
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the :setting:`ALLOWED_HOSTS` setting. Failing to do so will result in all
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requests being returned as "Bad Request (400)".
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.. _django/views/debug.py: https://github.com/django/django/blob/master/django/views/debug.py
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DEBUG_PROPAGATE_EXCEPTIONS
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@ -17,6 +17,11 @@ Here are a couple of example settings::
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DEFAULT_FROM_EMAIL = 'webmaster@example.com'
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TEMPLATE_DIRS = ('/home/templates/mike', '/home/templates/john')
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.. note::
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If you set :setting:`DEBUG` to ``False``, you also need to properly set
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the :setting:`ALLOWED_HOSTS` setting.
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Because a settings file is a Python module, the following apply:
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* It doesn't allow for Python syntax errors.
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