Added project router to prevent projectb from being touched

nm2/settings.py

@@ -185,6 +185,8 @@ LOGGING = {
     }
 }
 
+DATABASE_ROUTERS = ["projectb.router.DbRouter"]
+
 # New 1.7 test runner, we set it explicitly to silence django's checks
 TEST_RUNNER = 'django.test.runner.DiscoverRunner'
 

projectb/router.py

+# coding: utf-8
+from __future__ import print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import unicode_literals
+
+class DbRouter(object):
+    def db_for_read(self, model, **hints):
+        if model._meta.app_label == "projectb":
+            return "projectb"
+        return None
+
+    def db_for_write(self, model, **hints):
+        if model._meta.app_label == "projectb":
+            return 'projectb'
+        return None
+
+    def allow_relation(self, obj1, obj2, **hints):
+        return None
+
+    # Also works with Django 1.7 as long as the projectb app has no DB models
+    def allow_migrate(self, db, *args, **kw):
+        if db == "projectb":
+            return False
+
+    # From Django 1.8 onwards
+    #def allow_migrate(self, db, app_label, model_name=None, **hints):
+    #    if db == "projectb" or app_label == "projectb":
+    #        return False