Ruby on rails Rails未初始化常量，因为不知从何处冒出了错误的名称空间

我随机地遇到错误，我的框架抱怨由于名称空间不好而丢失了一个类

出于某些原因，Rails将尝试从不同的gem查找名称空间的类名：

假设我的根命名空间中有一个

：：profilescoontroller

，有时会出现以下错误：

未初始化的常量Mongoid:：Token:：Collisions:：ProfilesController

其中，

Mongoid:：Token:：Collisions

（示例）是模型中使用的模块。我有几个配置文件控制器声明如下

class ::ProfilesController < Devise::RegistrationsController
class Registrations::ProfilesController < Devise::RegistrationsController
class Foo::ProfilesController < FooController
class Bar::ProfilesController < BarController
class Baz::Foo::ProfilesController < BazController

---

这有很多魔力。在几乎所有其他语言中，都可以根据需要显式导入/需要类。Rails决定为您这样做，这带来了很多复杂性。这可能与此有关：嘿@MrYoshiji这可能与Rails自动加载魔法陷阱有关，但您链接的问题针对一个已经存在的常数处理了一个不同的问题。在我的例子中，不仅常量仍然没有解析，而且rails实际上通过将不相关的名称空间添加到类中，构成了一个在任何地方都不存在的常量。request.rb:93似乎调用了

constantize

，这（我想）不在字符串前加前缀以使其与

：

一致，因此在某个地方有动态代码调用一个“profiles\u controller”，它将从某个地方获得一个奇怪的名称空间。。。我想它可能来自

routes.rb

文件？仍然不明白为什么我会得到一个免费的坏名称空间，它甚至不存在于路由中。。。

ActionController::RoutingError (uninitialized constant Mongoid::Token::Collisions::ProfilesController):

activesupport (5.0.0.1) lib/active_support/inflector/methods.rb:283:in `const_get'
activesupport (5.0.0.1) lib/active_support/inflector/methods.rb:283:in `block in constantize'
activesupport (5.0.0.1) lib/active_support/inflector/methods.rb:266:in `each'
activesupport (5.0.0.1) lib/active_support/inflector/methods.rb:266:in `inject'
activesupport (5.0.0.1) lib/active_support/inflector/methods.rb:266:in `constantize'
actionpack (5.0.0.1) lib/action_dispatch/http/request.rb:93:in `controller_class'
actionpack (5.0.0.1) lib/action_dispatch/routing/route_set.rb:44:in `controller'
actionpack (5.0.0.1) lib/action_dispatch/routing/route_set.rb:30:in `serve'
actionpack (5.0.0.1) lib/action_dispatch/journey/router.rb:39:in `block in serve'
actionpack (5.0.0.1) lib/action_dispatch/journey/router.rb:26:in `each'
actionpack (5.0.0.1) lib/action_dispatch/journey/router.rb:26:in `serve'
actionpack (5.0.0.1) lib/action_dispatch/routing/route_set.rb:725:in `call'
rack-attack (5.0.1) lib/rack/attack.rb:147:in `call'
omniauth (1.3.2) lib/omniauth/strategy.rb:186:in `call!'
omniauth (1.3.2) lib/omniauth/strategy.rb:164:in `call'
omniauth (1.3.2) lib/omniauth/strategy.rb:186:in `call!'
omniauth (1.3.2) lib/omniauth/strategy.rb:164:in `call'
rack-tracker (1.1.0) lib/rack/tracker.rb:34:in `call'
rack-utm (0.0.2) lib/rack-utm.rb:59:in `call'
warden (1.2.6) lib/warden/manager.rb:35:in `block in call'
warden (1.2.6) lib/warden/manager.rb:34:in `catch'
warden (1.2.6) lib/warden/manager.rb:34:in `call'
rack (2.0.1) lib/rack/etag.rb:25:in `call'
rack (2.0.1) lib/rack/conditional_get.rb:25:in `call'
rack (2.0.1) lib/rack/head.rb:12:in `call'
rack (2.0.1) lib/rack/session/abstract/id.rb:222:in `context'
rack (2.0.1) lib/rack/session/abstract/id.rb:216:in `call'
actionpack (5.0.0.1) lib/action_dispatch/middleware/cookies.rb:613:in `call'
actionpack (5.0.0.1) lib/action_dispatch/middleware/callbacks.rb:38:in `block in call'
activesupport (5.0.0.1) lib/active_support/callbacks.rb:97:in `__run_callbacks__'
activesupport (5.0.0.1) lib/active_support/callbacks.rb:750:in `_run_call_callbacks'
activesupport (5.0.0.1) lib/active_support/callbacks.rb:90:in `run_callbacks'
actionpack (5.0.0.1) lib/action_dispatch/middleware/callbacks.rb:36:in `call'
actionpack (5.0.0.1) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.0.0.1) lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
actionpack (5.0.0.1) lib/action_dispatch/middleware/debug_exceptions.rb:49:in `call'
web-console (3.3.1) lib/web_console/middleware.rb:131:in `call_app'
web-console (3.3.1) lib/web_console/middleware.rb:28:in `block in call'
web-console (3.3.1) lib/web_console/middleware.rb:18:in `catch'
web-console (3.3.1) lib/web_console/middleware.rb:18:in `call'
actionpack (5.0.0.1) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
railties (5.0.0.1) lib/rails/rack/logger.rb:36:in `call_app'
railties (5.0.0.1) lib/rails/rack/logger.rb:24:in `block in call'
activesupport (5.0.0.1) lib/active_support/tagged_logging.rb:70:in `block in tagged'
activesupport (5.0.0.1) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (5.0.0.1) lib/active_support/tagged_logging.rb:70:in `tagged'
railties (5.0.0.1) lib/rails/rack/logger.rb:24:in `call'
ahoy_matey (1.5.2) lib/ahoy/engine.rb:22:in `call_with_quiet_ahoy'
request_store (1.3.1) lib/request_store/middleware.rb:9:in `call'
actionpack (5.0.0.1) lib/action_dispatch/middleware/request_id.rb:24:in `call'
rack (2.0.1) lib/rack/method_override.rb:22:in `call'
rack (2.0.1) lib/rack/runtime.rb:22:in `call'
activesupport (5.0.0.1) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
actionpack (5.0.0.1) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.0.0.1) lib/action_dispatch/middleware/static.rb:136:in `call'
rack (2.0.1) lib/rack/sendfile.rb:111:in `call'
rack-cors (0.4.0) lib/rack/cors.rb:80:in `call'
railties (5.0.0.1) lib/rails/engine.rb:522:in `call'
puma (3.6.0) lib/puma/configuration.rb:225:in `call'
puma (3.6.0) lib/puma/server.rb:578:in `handle_request'
puma (3.6.0) lib/puma/server.rb:415:in `process_client'
puma (3.6.0) lib/puma/server.rb:275:in `block in run'
puma (3.6.0) lib/puma/thread_pool.rb:116:in `block in spawn_thread'