newforms-admin: Merged from trunk up to [5916]

git-svn-id: http://code.djangoproject.com/svn/django/branches/newforms-admin@5918 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 32 insertions, 0 deletions

diff --git a/django/core/management/commands/diffsettings.py b/django/core/management/commands/diffsettings.py
new file mode 100644
index 0000000000..2459f11700
--- /dev/null
+++ b/django/core/management/commands/diffsettings.py
@@ -0,0 +1,32 @@
+from django.core.management.base import NoArgsCommand
+
+def module_to_dict(module, omittable=lambda k: k.startswith('_')):
+    "Converts a module namespace to a Python dictionary. Used by get_settings_diff."
+    return dict([(k, repr(v)) for k, v in module.__dict__.items() if not omittable(k)])
+
+class Command(NoArgsCommand):
+    help = """Displays differences between the current settings.py and Django's
+    default settings. Settings that don't appear in the defaults are
+    followed by "###"."""
+
+    requires_model_validation = False
+
+    def handle_noargs(self, **options):
+        # Inspired by Postfix's "postconf -n".
+        from django.conf import settings, global_settings
+
+        # Because settings are imported lazily, we need to explicitly load them.
+        settings._import_settings()
+
+        user_settings = module_to_dict(settings._target)
+        default_settings = module_to_dict(global_settings)
+
+        output = []
+        keys = user_settings.keys()
+        keys.sort()
+        for key in keys:
+            if key not in default_settings:
+                output.append("%s = %s  ###" % (key, user_settings[key]))
+            elif user_settings[key] != default_settings[key]:
+                output.append("%s = %s" % (key, user_settings[key]))
+        print '\n'.join(output)