Don't add devise routes if running DB rake tasks.

Gemfile.lock

@@ -11,7 +11,7 @@ GIT
 
 GIT
   remote: git://github.com/ontohub/ontohub-models.git
-  revision: 5c43e364fd84c2022361f72e44cceb4a126e0eb7
+  revision: a4c8d67e63bdd02d14a4cfb9a118ada143b41f22
   branch: master
   specs:
     ontohub-models (0.1.0)

config/routes.rb

@@ -43,8 +43,14 @@ def allow_double_slashes_in_routes
   allow_double_slashes_in_routes do
     scope format: false, defaults: {format: :json} do
       # Add mappings for Devise, but skip all Devise-routes
-      devise_for :users,
-        skip: %i(registrations confirmations sessions unlocks passwords)
+      # We exclude these Devise mappings from these rake tasks because they
+      # load the models. When loading the models, the database needs to exist,
+      # or else it throws an error.
+      unless rake_task?(%w(db:create db:migrate db:drop
+                           db:recreate db:recreate:seed))
+        devise_for :users,
+          skip: %i(registrations confirmations sessions unlocks passwords)
+      end
 
       # Add routes to a no-op action to create URL-helpers that are used in
       # confirmation, password-reset and unlock emails