Ruby on rails Rails引擎-名称错误：未初始化常量

我正在创建一个Rails引擎分类，在这个分类中，我有课堂热情和关注热情

我还有另一个引擎的职位，在那里我包括热情的关注。这个值得关注的问题属于/lib文件夹中的引擎分类

事实证明，每当我试图通过passion_ID发布新帖子时，我都会收到以下错误消息：

NameError（未初始化的常量提要：：Post：：分类）：

“Categorization”是我在Engine中创建的连接表 分类

下面是这段代码

发动机分类 #激情网

module Classification
  class Passion < ApplicationRecord
    ...
    has_many :categorizations
    has_many :posts, as: :categorizable, through: :categorizations
    ...
  end
end

#==========================================//
# Classification.rb (JoinTable)
module Classification
  class Categorization < ApplicationRecord
    belongs_to :passion
    belongs_to :categorizable, polymorphic: true
  end
end


#===========================================//
# classification/lib/passionable.rb

require 'active_support/concern'

module Classification
  module Passionable extend ActiveSupport::Concern
    included do
      has_many :categorizations, as: :categorizable
      has_many :passions, through: :categorizations
    end
  end
end

错误消息：

NameError (uninitialized constant Feed::Post::Categorization):

activerecord (5.0.2) lib/active_record/inheritance.rb:152:in `compute_type'
activerecord (5.0.2) lib/active_record/reflection.rb:354:in `compute_class'
activerecord (5.0.2) lib/active_record/reflection.rb:350:in `klass'
activerecord (5.0.2) lib/active_record/reflection.rb:745:in `source_reflection'
activerecord (5.0.2) lib/active_record/reflection.rb:925:in `check_validity!'
activerecord (5.0.2) lib/active_record/associations/association.rb:25:in `initialize'
activerecord (5.0.2) lib/active_record/associations/has_many_through_association.rb:8:in `initialize'
activerecord (5.0.2) lib/active_record/associations.rb:240:in `new'
activerecord (5.0.2) lib/active_record/associations.rb:240:in `association'
activerecord (5.0.2) lib/active_record/associations/builder/collection_association.rb:66:in `passion_ids='
activemodel (5.0.2) lib/active_model/attribute_assignment.rb:46:in `public_send'
activemodel (5.0.2) lib/active_model/attribute_assignment.rb:46:in `_assign_attribute'
activemodel (5.0.2) lib/active_model/attribute_assignment.rb:40:in `block in _assign_attributes'
activemodel (5.0.2) lib/active_model/attribute_assignment.rb:39:in `each'
activemodel (5.0.2) lib/active_model/attribute_assignment.rb:39:in `_assign_attributes'
activerecord (5.0.2) lib/active_record/attribute_assignment.rb:26:in `_assign_attributes'
activemodel (5.0.2) lib/active_model/attribute_assignment.rb:33:in `assign_attributes'
activerecord (5.0.2) lib/active_record/core.rb:319:in `initialize'
activerecord (5.0.2) lib/active_record/inheritance.rb:65:in `new'
activerecord (5.0.2) lib/active_record/inheritance.rb:65:in `new'
engines/feed/app/controllers/feed/posts_controller.rb:21:in `create'
actionpack (5.0.2) lib/action_controller/metal/basic_implicit_render.rb:4:in `send_action'
actionpack (5.0.2) lib/abstract_controller/base.rb:188:in `process_action'
actionpack (5.0.2) lib/action_controller/metal/rendering.rb:30:in `process_action'
actionpack (5.0.2) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
activesupport (5.0.2) lib/active_support/callbacks.rb:126:in `call'
activesupport (5.0.2) lib/active_support/callbacks.rb:506:in `block (2 levels) in compile'
activesupport (5.0.2) lib/active_support/callbacks.rb:455:in `call'
activesupport (5.0.2) lib/active_support/callbacks.rb:101:in `__run_callbacks__'
activesupport (5.0.2) lib/active_support/callbacks.rb:750:in `_run_process_action_callbacks'
activesupport (5.0.2) lib/active_support/callbacks.rb:90:in `run_callbacks'
actionpack (5.0.2) lib/abstract_controller/callbacks.rb:19:in `process_action'
actionpack (5.0.2) lib/action_controller/metal/rescue.rb:20:in `process_action'
actionpack (5.0.2) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
activesupport (5.0.2) lib/active_support/notifications.rb:164:in `block in instrument'
activesupport (5.0.2) lib/active_support/notifications/instrumenter.rb:21:in `instrument'
activesupport (5.0.2) lib/active_support/notifications.rb:164:in `instrument'
actionpack (5.0.2) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (5.0.2) lib/action_controller/metal/params_wrapper.rb:248:in `process_action'
activerecord (5.0.2) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (5.0.2) lib/abstract_controller/base.rb:126:in `process'
actionpack (5.0.2) lib/action_controller/metal.rb:190:in `dispatch'
actionpack (5.0.2) lib/action_controller/metal.rb:262:in `dispatch'
actionpack (5.0.2) lib/action_dispatch/routing/route_set.rb:50:in `dispatch'
actionpack (5.0.2) lib/action_dispatch/routing/route_set.rb:32:in `serve'
actionpack (5.0.2) lib/action_dispatch/journey/router.rb:39:in `block in serve'
actionpack (5.0.2) lib/action_dispatch/journey/router.rb:26:in `each'
actionpack (5.0.2) lib/action_dispatch/journey/router.rb:26:in `serve'
actionpack (5.0.2) lib/action_dispatch/routing/route_set.rb:725:in `call'
railties (5.0.2) lib/rails/engine.rb:522:in `call'
railties (5.0.2) lib/rails/railtie.rb:193:in `public_send'
railties (5.0.2) lib/rails/railtie.rb:193:in `method_missing'
actionpack (5.0.2) lib/action_dispatch/routing/mapper.rb:17:in `block in <class:Constraints>'
actionpack (5.0.2) lib/action_dispatch/routing/mapper.rb:46:in `serve'
actionpack (5.0.2) lib/action_dispatch/journey/router.rb:39:in `block in serve'
actionpack (5.0.2) lib/action_dispatch/journey/router.rb:26:in `each'
actionpack (5.0.2) lib/action_dispatch/journey/router.rb:26:in `serve'
actionpack (5.0.2) lib/action_dispatch/routing/route_set.rb:725:in `call'
rack (2.0.1) lib/rack/etag.rb:25:in `call'
rack (2.0.1) lib/rack/conditional_get.rb:38:in `call'
rack (2.0.1) lib/rack/head.rb:12:in `call'
activerecord (5.0.2) lib/active_record/migration.rb:553:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/callbacks.rb:38:in `block in call'
activesupport (5.0.2) lib/active_support/callbacks.rb:97:in `__run_callbacks__'
activesupport (5.0.2) lib/active_support/callbacks.rb:750:in `_run_call_callbacks'
activesupport (5.0.2) lib/active_support/callbacks.rb:90:in `run_callbacks'
actionpack (5.0.2) lib/action_dispatch/middleware/callbacks.rb:36:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/debug_exceptions.rb:49:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
railties (5.0.2) lib/rails/rack/logger.rb:36:in `call_app'
railties (5.0.2) lib/rails/rack/logger.rb:24:in `block in call'
activesupport (5.0.2) lib/active_support/tagged_logging.rb:69:in `block in tagged'
activesupport (5.0.2) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (5.0.2) lib/active_support/tagged_logging.rb:69:in `tagged'
railties (5.0.2) lib/rails/rack/logger.rb:24:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/request_id.rb:24:in `call'
rack (2.0.1) lib/rack/runtime.rb:22:in `call'
activesupport (5.0.2) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/static.rb:136:in `call'
rack (2.0.1) lib/rack/sendfile.rb:111:in `call'
railties (5.0.2) lib/rails/engine.rb:522:in `call'
puma (3.8.2) lib/puma/configuration.rb:224:in `call'
puma (3.8.2) lib/puma/server.rb:600:in `handle_request'
puma (3.8.2) lib/puma/server.rb:435:in `process_client'
puma (3.8.2) lib/puma/server.rb:299:in `block in run'
puma (3.8.2) lib/puma/thread_pool.rb:120:in `block in spawn_thread'

namererror（未初始化的常量提要：：Post：：分类）：
activerecord（5.0.2）lib/active\u record/heritation.rb:152:in'compute\u type'
activerecord（5.0.2）lib/active_record/reflection.rb:354:in'compute_class'
activerecord（5.0.2）lib/active_record/reflection.rb:350:in'klass'
activerecord（5.0.2）lib/active\u record/reflection.rb:745:in'source\u reflection'
activerecord（5.0.2）lib/active\u record/reflection.rb:925:in'check\u validity！'
activerecord（5.0.2）lib/active_record/associations/association.rb:25:in'initialize'
activerecord（5.0.2）lib/active\u record/associations/has\u many\u-to\u-association.rb:8:in'initialize'
activerecord（5.0.2）lib/active_record/associations.rb:240:in'new'
activerecord（5.0.2）lib/active_record/associations.rb:240:in'association'
activerecord（5.0.2）lib/active\u record/associations/builder/collection\u association.rb:66:in'passion\u ids='10〕
activemodel（5.0.2）lib/active\u model/attribute\u assignment.rb:46:in'public\u send'
activemodel（5.0.2）lib/active\u model/attribute\u assignment.rb:46:in`\u assign\u attribute'
activemodel（5.0.2）lib/active\u model/attribute\u assignment.rb:40:in'block in\u assign\u attributes'
activemodel（5.0.2）lib/active_model/attribute_assignment.rb:39:in'each'
activemodel（5.0.2）lib/active\u model/attribute\u assignment.rb:39:in`\u assign\u attributes'
activerecord（5.0.2）lib/active\u record/attribute\u assignment.rb:26:in`\u assign\u attributes'
activemodel（5.0.2）lib/active\u model/attribute\u assignment.rb:33:in'assign\u attributes'
activerecord（5.0.2）lib/active_record/core.rb:319:in'initialize'
activerecord（5.0.2）lib/active_record/heritation.rb:65:in'new'
activerecord（5.0.2）lib/active_record/heritation.rb:65:in'new'
引擎/feed/app/controllers/feed/posts_controller.rb:21:in'create'
actionpack（5.0.2）lib/action\u controller/metal/basic\u implicit\u render.rb:4:in'send\u action'
actionpack（5.0.2）lib/abstract\u controller/base.rb:188:in'process\u action'
actionpack（5.0.2）lib/action\u controller/metal/rendering.rb:30:in'process\u action'
actionpack（5.0.2）lib/abstract\u controller/callbacks.rb:20:in'block in process\u action'
activesupport（5.0.2）lib/active_support/callbacks.rb:126:in'call'
activesupport（5.0.2）lib/active_support/callbacks.rb:506:in`block（2层）in compile'
activesupport（5.0.2）lib/active_support/callbacks.rb:455:in'call'
activesupport（5.0.2）lib/active\u support/callbacks.rb:101:in`\uuuuu run\u callbacks
activesupport（5.0.2）lib/active\u support/callbacks.rb:750:in``运行\进程\操作\回调'
activesupport（5.0.2）lib/active\u support/callbacks.rb:90:in'run\u callbacks'
actionpack（5.0.2）lib/abstract\u controller/callbacks.rb:19:in'process\u action'
actionpack（5.0.2）lib/action\u controller/metal/rescue.rb:20:in'process\u action'
actionpack（5.0.2）lib/action\u controller/metal/instrumentation.rb:32:in'block in process\u action'
activesupport（5.0.2）lib/active_support/notifications.rb:164:in'block in instrument'
activesupport（5.0.2）lib/active_support/notifications/instrumenter.rb:21:in'instrument'
activesupport（5.0.2）lib/active_support/notifications.rb:164:in'instrument'
actionpack（5.0.2）lib/action\u controller/metal/instrumentation.rb:30:in'process\u action'
actionpack（5.0.2）lib/action\u controller/metal/params\u wrapper.rb:248:in'process\u action'
activerecord（5.0.2）lib/active\u record/railties/controller\u runtime.rb:18:in'process\u action'
actionpack（5.0.2）lib/abstract_controller/base.rb:126:在“进程”中
actionpack（5.0.2）lib/action_controller/metal.rb:190:in'dispatch'
actionpack（5.0.2）lib/action_controller/metal.rb:262:in'dispatch'
actionpack（5.0.2）lib/action\u dispatch/routing/route\u set.rb:50:in'dispatch'
actionpack（5.0.2）lib/action\u dispatch/routing/route\u set.rb:32:in'serve'
actionpack（5.0.2）lib/action_dispatch/journey/router.rb:39:in'block in service'
actionpack（5.0.2）lib/action_dispatch/journey/router.rb:26:in'each'
actionpack（5.0.2）lib/action_dispatch/journey/router.rb:26:in'serve'
actionpack（5.0.2）lib/action\u dispatch/routing/route\u set.rb:725:in'call'
railties（5.0.2）lib/rails/engine.rb:522:in'call'
railties（5.0.2）lib/rails/railtie.rb:193:in'public_send'
railties（5.0.2）lib/rails/railtie.rb:193:in'method_missing'
actionpack（5.0.2）lib/action_dispatch/routing/mapper.rb:17:in'block in'
actionpack（5.0.2）lib/action_dispatch/routing/mapper.rb:46:in'serve'
actionpack（5.0.2）lib/action_dispatch/journey/router.rb:39:in'block in service'
actionpack（5.0.2）lib/action_dispatch/journey/router.rb:26:in'each'
actionpack（5.0.2）lib/action_dispatch/journey/router.rb:26:in'serve'
actionpack（5.0.2）lib/action\u dispatch/routing/route\u set.rb:725:in'call'
机架（2.0.1）lib/rack/etag.rb:25:in'call'
rack（2.0.1）lib/rack/conditional_get.rb:38:in'call'
机架（2.0.1）lib/rack/head.rb:12:in'call'
activerecord（5.0.2）lib/active_record/migration.rb:553:in'call'
actionpack（5.0.2）lib/action_dispatch/middleware/callbacks.rb:38:in'block in call'
activesupport（5.0.2）lib/active\u support/callbacks.rb:97:in`\uuuu run\u callbacks
activesupport（5.0.2）lib/active\u support/callbacks.rb:750:在“运行调用”中
activesupport（5.0.2）lib/active\u support/callbacks.rb:90:in'run\u callbacks'
actionpack（5.0.2）lib/action_dispatch/middleware/callbacks.rb:36:in'call'
actionpack（5.0.2）lib/action\u dispatch/middleware/ex
{
    "post": {
        "title": "My post title",
        "content": "Lorem ipsum dolor sit amet..",
        "passion_ids":["8bf8559a-857d-4ca5-82e1-f93dd3effc35","d51747b7-0960-460a-b15a-4b593155e2c5"]
    }
}

NameError (uninitialized constant Feed::Post::Categorization):

activerecord (5.0.2) lib/active_record/inheritance.rb:152:in `compute_type'
activerecord (5.0.2) lib/active_record/reflection.rb:354:in `compute_class'
activerecord (5.0.2) lib/active_record/reflection.rb:350:in `klass'
activerecord (5.0.2) lib/active_record/reflection.rb:745:in `source_reflection'
activerecord (5.0.2) lib/active_record/reflection.rb:925:in `check_validity!'
activerecord (5.0.2) lib/active_record/associations/association.rb:25:in `initialize'
activerecord (5.0.2) lib/active_record/associations/has_many_through_association.rb:8:in `initialize'
activerecord (5.0.2) lib/active_record/associations.rb:240:in `new'
activerecord (5.0.2) lib/active_record/associations.rb:240:in `association'
activerecord (5.0.2) lib/active_record/associations/builder/collection_association.rb:66:in `passion_ids='
activemodel (5.0.2) lib/active_model/attribute_assignment.rb:46:in `public_send'
activemodel (5.0.2) lib/active_model/attribute_assignment.rb:46:in `_assign_attribute'
activemodel (5.0.2) lib/active_model/attribute_assignment.rb:40:in `block in _assign_attributes'
activemodel (5.0.2) lib/active_model/attribute_assignment.rb:39:in `each'
activemodel (5.0.2) lib/active_model/attribute_assignment.rb:39:in `_assign_attributes'
activerecord (5.0.2) lib/active_record/attribute_assignment.rb:26:in `_assign_attributes'
activemodel (5.0.2) lib/active_model/attribute_assignment.rb:33:in `assign_attributes'
activerecord (5.0.2) lib/active_record/core.rb:319:in `initialize'
activerecord (5.0.2) lib/active_record/inheritance.rb:65:in `new'
activerecord (5.0.2) lib/active_record/inheritance.rb:65:in `new'
engines/feed/app/controllers/feed/posts_controller.rb:21:in `create'
actionpack (5.0.2) lib/action_controller/metal/basic_implicit_render.rb:4:in `send_action'
actionpack (5.0.2) lib/abstract_controller/base.rb:188:in `process_action'
actionpack (5.0.2) lib/action_controller/metal/rendering.rb:30:in `process_action'
actionpack (5.0.2) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
activesupport (5.0.2) lib/active_support/callbacks.rb:126:in `call'
activesupport (5.0.2) lib/active_support/callbacks.rb:506:in `block (2 levels) in compile'
activesupport (5.0.2) lib/active_support/callbacks.rb:455:in `call'
activesupport (5.0.2) lib/active_support/callbacks.rb:101:in `__run_callbacks__'
activesupport (5.0.2) lib/active_support/callbacks.rb:750:in `_run_process_action_callbacks'
activesupport (5.0.2) lib/active_support/callbacks.rb:90:in `run_callbacks'
actionpack (5.0.2) lib/abstract_controller/callbacks.rb:19:in `process_action'
actionpack (5.0.2) lib/action_controller/metal/rescue.rb:20:in `process_action'
actionpack (5.0.2) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
activesupport (5.0.2) lib/active_support/notifications.rb:164:in `block in instrument'
activesupport (5.0.2) lib/active_support/notifications/instrumenter.rb:21:in `instrument'
activesupport (5.0.2) lib/active_support/notifications.rb:164:in `instrument'
actionpack (5.0.2) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (5.0.2) lib/action_controller/metal/params_wrapper.rb:248:in `process_action'
activerecord (5.0.2) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (5.0.2) lib/abstract_controller/base.rb:126:in `process'
actionpack (5.0.2) lib/action_controller/metal.rb:190:in `dispatch'
actionpack (5.0.2) lib/action_controller/metal.rb:262:in `dispatch'
actionpack (5.0.2) lib/action_dispatch/routing/route_set.rb:50:in `dispatch'
actionpack (5.0.2) lib/action_dispatch/routing/route_set.rb:32:in `serve'
actionpack (5.0.2) lib/action_dispatch/journey/router.rb:39:in `block in serve'
actionpack (5.0.2) lib/action_dispatch/journey/router.rb:26:in `each'
actionpack (5.0.2) lib/action_dispatch/journey/router.rb:26:in `serve'
actionpack (5.0.2) lib/action_dispatch/routing/route_set.rb:725:in `call'
railties (5.0.2) lib/rails/engine.rb:522:in `call'
railties (5.0.2) lib/rails/railtie.rb:193:in `public_send'
railties (5.0.2) lib/rails/railtie.rb:193:in `method_missing'
actionpack (5.0.2) lib/action_dispatch/routing/mapper.rb:17:in `block in <class:Constraints>'
actionpack (5.0.2) lib/action_dispatch/routing/mapper.rb:46:in `serve'
actionpack (5.0.2) lib/action_dispatch/journey/router.rb:39:in `block in serve'
actionpack (5.0.2) lib/action_dispatch/journey/router.rb:26:in `each'
actionpack (5.0.2) lib/action_dispatch/journey/router.rb:26:in `serve'
actionpack (5.0.2) lib/action_dispatch/routing/route_set.rb:725:in `call'
rack (2.0.1) lib/rack/etag.rb:25:in `call'
rack (2.0.1) lib/rack/conditional_get.rb:38:in `call'
rack (2.0.1) lib/rack/head.rb:12:in `call'
activerecord (5.0.2) lib/active_record/migration.rb:553:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/callbacks.rb:38:in `block in call'
activesupport (5.0.2) lib/active_support/callbacks.rb:97:in `__run_callbacks__'
activesupport (5.0.2) lib/active_support/callbacks.rb:750:in `_run_call_callbacks'
activesupport (5.0.2) lib/active_support/callbacks.rb:90:in `run_callbacks'
actionpack (5.0.2) lib/action_dispatch/middleware/callbacks.rb:36:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/debug_exceptions.rb:49:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
railties (5.0.2) lib/rails/rack/logger.rb:36:in `call_app'
railties (5.0.2) lib/rails/rack/logger.rb:24:in `block in call'
activesupport (5.0.2) lib/active_support/tagged_logging.rb:69:in `block in tagged'
activesupport (5.0.2) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (5.0.2) lib/active_support/tagged_logging.rb:69:in `tagged'
railties (5.0.2) lib/rails/rack/logger.rb:24:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/request_id.rb:24:in `call'
rack (2.0.1) lib/rack/runtime.rb:22:in `call'
activesupport (5.0.2) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.0.2) lib/action_dispatch/middleware/static.rb:136:in `call'
rack (2.0.1) lib/rack/sendfile.rb:111:in `call'
railties (5.0.2) lib/rails/engine.rb:522:in `call'
puma (3.8.2) lib/puma/configuration.rb:224:in `call'
puma (3.8.2) lib/puma/server.rb:600:in `handle_request'
puma (3.8.2) lib/puma/server.rb:435:in `process_client'
puma (3.8.2) lib/puma/server.rb:299:in `block in run'
puma (3.8.2) lib/puma/thread_pool.rb:120:in `block in spawn_thread'

# classification/lib/passionable.rb

require 'active_support/concern'

module Classification
  module Passionable extend ActiveSupport::Concern
    included do
      has_many :categorizations, as: :categorizable, class_name: 'Classification::Categorization'
      has_many :passions, through: :categorizations
    end
  end
end