Ticket #1549: diffsettings.patch

management.py

@@ -483 +483 @@
 get_admin_index.help_doc = "Prints the admin-index template snippet for the given app name(s)."
 get_admin_index.args = APP_ARGS
 
+def _module_to_dict(module, omittable=lambda k: k.startswith('_')):
+    "Converts a module namespace to a Python dictionary -- used by get_settings_diff"
+    result = {}
+    keys = (k for k in dir(module) if not omittable(k))
+    for key in keys:
+        # Use repr() so that strings are quoted etc., as in settings.py
+        result[key] = repr(getattr(module, key))
+    return result
+
+def get_settings_diff():
+    """
+    Displays differences between the current project's settings.py
+    and Django's default settings. Setting names that do not appear 
+    in the defaults are followed by "###". Inspired by Postfix's 
+    "postconf -n".
+    """
+    from django.conf import settings
+    from django.conf import global_settings
+
+    user_settings = _module_to_dict(settings)
+    default_settings = _module_to_dict(global_settings)
+
+    output = ""
+    for key in sorted(user_settings):   
+        if key not in default_settings:
+            output += "%s = %s  ###\n" % (key, user_settings[key])
+        elif user_settings[key] != default_settings[key]:
+            output += "%s = %s\n" % (key, user_settings[key])
+    print output
+get_settings_diff.args = ""
+get_settings_diff.help_doc = "Displays differences between the current project's settings.py and Django's default settings. Settings with no corresponding default values are followed by '###'."
+
 def install(app):
     "Executes the equivalent of 'get_sql_all' in the current database."
     from django.db import connection, transaction
@@ -982 +1014 @@
 DEFAULT_ACTION_MAPPING = {
     'adminindex': get_admin_index,
     'createcachetable' : createcachetable,
+    'diffsettings': get_settings_diff,
     'inspectdb': inspectdb,
     'install': install,
     'reset': reset,
@@ -1003 +1036 @@
 NO_SQL_TRANSACTION = (
     'adminindex',
     'createcachetable',
+    'diffsettings',
     'install',
     'reset',
     'sqlindexes'
@@ -1067 +1101 @@
 
     if action == 'shell':
         action_mapping[action](options.plain is True)
-    elif action in ('syncdb', 'validate'):
+    elif action in ('syncdb', 'validate', 'diffsettings'):
         action_mapping[action]()
     elif action == 'inspectdb':
         try: