app/django/contrib/admin/__init__.py
author Sverre Rabbelier <srabbelier@gmail.com>
Sat, 12 Sep 2009 00:36:49 +0200
changeset 2898 ac5f77cd6046
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Fix 500 when saving /site/edit without email When saving /site/edit with no no_reply_email set, a 500 error page would be returned due to an empty value being passed as value to the datastore (which is not allowed for email fields).
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from django.contrib.admin.options import ModelAdmin, HORIZONTAL, VERTICAL
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from django.contrib.admin.options import StackedInline, TabularInline
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from django.contrib.admin.sites import AdminSite, site
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def autodiscover():
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    """
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    Auto-discover INSTALLED_APPS admin.py modules and fail silently when 
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    not present. This forces an import on them to register any admin bits they
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    may want.
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    """
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    import imp
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    from django.conf import settings
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    for app in settings.INSTALLED_APPS:
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        # For each app, we need to look for an admin.py inside that app's
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        # package. We can't use os.path here -- recall that modules may be
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        # imported different ways (think zip files) -- so we need to get
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        # the app's __path__ and look for admin.py on that path.
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        # Step 1: find out the app's __path__ Import errors here will (and
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        # should) bubble up, but a missing __path__ (which is legal, but weird)
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        # fails silently -- apps that do weird things with __path__ might
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        # need to roll their own admin registration.
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        try:
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            app_path = __import__(app, {}, {}, [app.split('.')[-1]]).__path__
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        except AttributeError:
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            continue
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        # Step 2: use imp.find_module to find the app's admin.py. For some
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        # reason imp.find_module raises ImportError if the app can't be found
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        # but doesn't actually try to import the module. So skip this app if
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        # its admin.py doesn't exist
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        try:
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            imp.find_module('admin', app_path)
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        except ImportError:
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            continue
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        # Step 3: import the app's admin file. If this has errors we want them
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        # to bubble up.
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        __import__("%s.admin" % app)