预计定义.在模块内调用类时 [英] Expected to define. When calling class inside a module

问题描述

我刚接触 Rails.我在 lib 目录中有一个设置，如下所示:

I new to rails. I have a setup in the lib directory like so:

lib/
   blog/
     core/
        search/
            base.rb

base.rb 也定义了 Base 类:

The base.rb defines the Base class as well:

module Blog
  module Core
    module Search
      class Base

        attr_accessor :properties

        def initialize(params)
          @properties = {}
        end
      end
    end
  end
end

我的 application.rb 中有以下代码

I have the following code in my application.rb

config.autoload_paths += Dir["#{config.root}/lib/**/"]

当我将它包含在帖子控制器中时，出现以下错误:

When I include it in posts controller I get following errors:

LoadError in PostsController#index

Expected /home/usr/code/blog/lib/blog/core/search/base.rb to define Base

有什么想法吗?我正在使用带有 RVM 的 rails 3.2.5.谢谢你的每一个建议.

Any idea? I'm using rails 3.2.5 with RVM. Thank you for every advice.

更新:添加了我的完整堆栈:

Started GET "/admin/posts" for 127.0.0.1 at 2012-06-08 21:06:18 +0800

LoadError (Expected /home/usr/code/blog/lib/blog/core/search/base.rb to define Base):
  app/controllers/admin/base_controller.rb:5:in `<top (required)>'
  app/controllers/admin/posts_controller.rb:6:in `<top (required)>'


  Rendered /home/usr/.rvm/gems/ruby-1.9.3-p194@rails-3.2.5/gems/actionpack-3.2.5/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.9ms)
  Rendered /home/usr/.rvm/gems/ruby-1.9.3-p194@rails-3.2.5/gems/actionpack-3.2.5/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (0.6ms)
  Rendered /home/usr/.rvm/gems/ruby-1.9.3-p194@rails-3.2.5/gems/actionpack-3.2.5/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (7.0ms)

推荐答案

我遇到了同样的问题.这是因为您尝试使用 /lib/** 直接在 application.rb 中加载 /lib/blog/core/search/base.rb/

I had the same problem. It comes from the fact that you try to load /lib/blog/core/search/base.rb directly in application.rb with /lib/**/

我遇到的错误:

Expected /[...]/myapp/lib/durative/base.rb to define Base (LoadError)

目录结构:

lib/
 --durative/
   --base.rb

base.rb:

module Durative
  class Base
    def initialize(config)
       @config = {}
    end
    #...
  end
end

application.rb:

config.autoload_paths += Dir["#{config.root}/lib/**/"]

这是我为使其工作所做的更改

目录结构:

lib/
 --durative.rb **(added)**
 --durative/
   --base.rb

durative.rb:

require 'durative/base'

base.rb(无变化)

application.rb(已更改):

config.autoload_paths += Dir["#{config.root}/lib/"]

告诉我们它是否也适合您.

Tell us if it worked for you too.

这篇关于预计定义.在模块内调用类时的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！