Rails 4可挂载引擎，找不到文件"jquery"

问题描述：

我正在创建一个使用宝石"jquery-rails"的可安装在Rails上的引擎插件.我在.gemspec文件

I'm creating a rails mountable engine plugin which uses the gem "jquery-rails". I added this code in .gemspec file

s.add_dependency "jquery-rails", "~> 3.0.1"

，然后运行bundle install，bundle update. (顺便说一句，这种添加是必要的吗?因为可安装在Rails上的引擎已经添加了"rails 4.0.1"，而从一开始它就又依赖于"jquery-rails 3.0.4"?).

and run bundle install, bundle update. (BTW is this adding necessary? Since rails mountable engine already added "rails 4.0.1" which in turn required "jquery-rails 3.0.4" as its dependency from the start?).

在app/assets/javascript/mountable_engine_name/application.js

In app/assets/javascript/mountable_engine_name/application.js

//= require jquery
//= require jquery-ujs
//= require_tree .

但是，当我在test/dummy/上运行服务器并访问使用标签<%= javascript_include_tag "mountable_engine_name/application" %>的任何模板时，它显示错误找不到文件'jquery'" .

But when I run the server on test/dummy/ and access any template which uses the tag <%= javascript_include_tag "mountable_engine_name/application" %> it's showing the error "couldn't find file 'jquery'".

我尝试创建一个全新的可挂载引擎插件，但发生的情况相同.

I tried creating a brand new mountable engine plugin but it happens the same.

我做错了吗?

PS.对不起我的英语不好.

PS. Sorry for my English.

更新
实际上，它发生在app/assets/javascript/和test/dummy/app/assets/javascript/中所有需要jquery和jquery-ujs的清单文件中.

UPDATE
Actually it happens on all every manifest file which require jquery and jquery-ujs both in app/assets/javascript/ and test/dummy/app/assets/javascript/ .

答

我知道最初的问题是在几个月前提出的，但是我遇到了同样的问题在Rails引擎教程中遇到问题，所以我发布以防万一这对其他人有帮助...

I know the original question was asked a few months ago, but I ran into the same problem while working through the Rails engine tutorial, so I'm posting in case this helps others...

我发现我需要更新四个文件:

I found that I needed to update four files:

1.)向您的.gemspec文件添加依赖项

1.) add a dependency to your .gemspec file

    #file: <your engine name>.gemspec

    s.add_dependency "jquery-rails", "~> 3.1.1"

2.)更新您的引擎application.js文件:

2.) update your engine application.js file:

    #file: <your engine name>/app/assets/javascripts/blorgh/application.js

    ...
    //= require jquery                                                                                                                         
    //= require jquery_ujs                                                                                                                     
    //= require_tree .

3.)更新您的父应用程序application.js文件:

3.) update your parent app application.js file:

    #file: <your engine name>/test/dummy/app/assets/javascripts/application.js

    ...
    //= require jquery                                                                                                                         
    //= require jquery_ujs                                                                                                                     
    //= require_tree .

4.)按照此 SO线程，您需要在engine.rb文件中添加一个需求:

4.) per this SO thread, you need to add a require to your engine.rb file:

    #file: lib/<your engine name>/engine.rb

    module <your engine name>
      class Engine < ::Rails::Engine
        require 'jquery-rails'
        isolate_namespace Blorgh
      end
    end

和平.

Rails 4可挂载引擎，找不到文件"jquery"

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