[utils] Handle backup and re-store of optional apps in a better way

beat/web/utils/management/commands/backup.py

@@ -59,6 +59,7 @@ APPS = [ #dump and load order are respected
         'search',
         'reports',
         'actstream',
+        'post_office',
         ]
 
 

beat/web/utils/management/commands/restore.py

@@ -74,6 +74,10 @@ class Command(BaseCommand):
 
     def add_arguments(self, parser):
 
+        parser.add_argument('-e', '--exclude', dest='exclude', action='append',
+            default=[], help='An app_label to exclude (use multiple ' \
+                '--exclude to exclude multiple apps).')
+
         parser.add_argument('backup', type=str,
                 help='The backup you wish to restore from')
 
@@ -115,6 +119,7 @@ class Command(BaseCommand):
 
             # and loads the apps respecting the imposed order
             for app in APPS:
+                if app in arguments.get('exclude'): continue
                 # copy prefix data
                 path = os.path.join(settings.PREFIX, app)
                 srcdir = os.path.join(tmpdir, 'prefix', app)