我终于有了Rails 5和Ruby 2.5.8的完美搭配。
迁移是最新的，并且运行良好。
我正在使用Elasticsearch进行搜索，并使用Memcache进行缓存-都可以（或者至少我认为它们可以）。
我添加了ApplicationRecord类以从ActiveRecord :: Base继承，并更新了我所有的类以从ApplicationRecord继承。
我已经禁用了attr_accessible gem，但是我仍然必须为strongparameters编写代码。
我的Rails服务器启动，但是当我访问我的站点时，我得到以下信息：
“在自动加载常量Sub时检测到循环依赖”
Sub（类似于reddit子）是一个非常简单的类。
有人知道我在做什么错吗？
顺便说一句，是的，我已经搜索过Google，SO等，但似乎找不到解决方法。
任何帮助将不胜感激。
好这是Sub类中最有趣的部分：
require 'elasticsearch/model'
class Sub < ApplicationRecord
include Elasticsearch::Model
include Elasticsearch::Model::Callbacks
has_many :comments
attr_accessible :name, :is_private, :is_banned, :is_default, :log_line, :rules, :posted, :nsfw, :is_read_only, :metadata
validates_presence_of :name, :message => "* required"
validates_length_of :name, :minimum => 4, :message => "minimum of 4 characters"
validates :name, length: {maximum: 20}
validates_format_of :name, :with => /\A[a-zA-Z0-9_]+$\Z/, :message => "letters, numbers and underscores only"
对于elasticsearch，我在课程结束时有这个提示：
def self.search(q)
__elasticsearch__.search(
{
query: {
multi_match: {
query: q, fields: ["name^10", "metadata.log_line^5", 'metadata.sidebar_text^1']
}
}
}
)`enter code here`
end
所以它的加载位置在comment.rb中：
class Comment < ApplicationRecord
belongs_to :sub
belongs_to :user
include Elasticsearch::Model
include Elasticsearch::Model::Callbacks
validates :root_comment_id, presence: true
validates :sub_id, presence: true
实际调用在comment.rb模型中：
这是类的定义：
class Comment < ActiveRecord
belongs_to :sub
belongs_to :user
include Elasticsearch::Model
include Elasticsearch::Model::Callbacks
validates :root_comment_id, presence: true
validates :sub_id, presence: true
这就是它的称呼方式：
sub = Sub.find_by_id(sub_id)
这是错误的追溯：
Circular dependency detected while autoloading constant Sub
rendering 404 in h_controller
Rendering errors/oops.html.erb within layouts/application
Rendered errors/oops.html.erb within layouts/application (4.3ms)
Rendered shared/_sidebar.html.erb (31.4ms)
----- Start BACKTRACE -----
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/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/activesupport-5.0.0/lib/active_support/callbacks.rb:448:in `block (2 levels) in around'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/activesupport-5.0.0/lib/active_support/callbacks.rb:271:in `block in halting_and_conditional'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/activesupport-5.0.0/lib/active_support/callbacks.rb:447:in `block in around'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/activesupport-5.0.0/lib/active_support/callbacks.rb:455:in `call'
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/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/activesupport-5.0.0/lib/active_support/callbacks.rb:750:in `_run_process_action_callbacks'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/activesupport-5.0.0/lib/active_support/callbacks.rb:90:in `run_callbacks'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/actionpack-5.0.0/lib/abstract_controller/callbacks.rb:19:in `process_action'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/actionpack-5.0.0/lib/action_controller/metal/rescue.rb:20:in `process_action'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/actionpack-5.0.0/lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/activesupport-5.0.0/lib/active_support/notifications.rb:164:in `block in instrument'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/activesupport-5.0.0/lib/active_support/notifications/instrumenter.rb:21:in `instrument'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/activesupport-5.0.0/lib/active_support/notifications.rb:164:in `instrument'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/actionpack-5.0.0/lib/action_controller/metal/instrumentation.rb:30:in `process_action'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/actionpack-5.0.0/lib/action_controller/metal/params_wrapper.rb:248:in `process_action'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/activerecord-5.0.0/lib/active_record/railties/controller_runtime.rb:18:in `process_action'
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/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/actionpack-5.0.0/lib/action_controller/metal.rb:190:in `dispatch'
/home/colin/.rbenv/versions/2.5.8/lib/ruby/gems/2.5.0/gems/actionpack-5.0.0/lib/action_controller/metal.rb:262:in `dispatch'
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----- END BACKTRACE -----
答案 0 :(得分：0)
您将comment.rb的内容发布了两次。一个是从ActiveRecord继承而另一个是从ApplicationRecord继承。
不确定您是否有2个comment.rb文件，但应该只有一个，并且该文件应该继承自ApplicationRecord