Question

我正在尝试使用rails 3 application

配置breadcrumbs_on_rails

我添加了

gem 'breadcrumbs_on_rails'

进入我的gemfile

另外，我已经包含了BreadcrumbsOnRails :: ControllerMixin

require File.expand_path('../boot', __FILE__)

require 'rails/all'

include BreadcrumbsOnRails::ControllerMixin

if defined?(Bundler)
....

进入application.rb

但无论如何我总是得到错误：

runnerw.exe C:\Ruby\bin\ruby.exe -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) /script/rails server -b 127.0.0.1 -p 3000 -e development
/config/application.rb:1:in `<top (required)>': uninitialized constant BreadcrumbsOnRails (NameError)
    from C:/Ruby/lib/ruby/gems/1.9.1/gems/railties-3.2.1/lib/rails/commands.rb:53:in `require'
    from C:/Ruby/lib/ruby/gems/1.9.1/gems/railties-3.2.1/lib/rails/commands.rb:53:in `block in <top (required)>'
    from C:/Ruby/lib/ruby/gems/1.9.1/gems/railties-3.2.1/lib/rails/commands.rb:50:in `tap'
    from C:/Ruby/lib/ruby/gems/1.9.1/gems/railties-3.2.1/lib/rails/commands.rb:50:in `<top (required)>'
    from /script/rails:6:in `require'
    from /script/rails:6:in `<top (required)>'

如何解决此错误？感谢

Answer 1

嗨朋友，在捆绑器加载你的宝石'breadcrumbs_on_rails'后，常量BreadcrumbsOnRails :: ControllerMixin将可用。

但是在Bundler加载gem之前你会使用BreadcrumbsOnRails :: ControllerMixin。

执行以下行后加载宝石。所以你必须使用

require 'rails/all'

if defined?(Bundler)
 # If you precompile assets before deploying to production, use this line
   Bundler.require(*Rails.groups(:assets => %w(development test)))
  # If you want your assets lazily compiled in production, use this line
 # Bundler.require(:default, :assets, Rails.env)
end
include BreadcrumbsOnRails::ControllerMixin

以下是宝石的文档。

https://github.com/weppos/breadcrumbs_on_rails

祝你好运。

Answer 2

查看@soundar提供的文档，我没有在源代码或文档中看到ControllerMixin。我也没有看到任何需要在config / application.rb

中放任何东西

rails 3 breadcrumbs_on_rails

2 个答案: