[英]How to Upgrade Rails to 4.2?
我想将我的Rails应用程序从3.2.12正确升级到4.2 ...
有人给我发送此链接： http : //edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html
目前，我正尝试从3.2.12升级到4.0 ...我挂在步骤5.4：
Rails 4.0 no longer supports loading plugins from vendor/plugins.
You must replace any plugins by extracting them to gems and adding them to your Gemfile.
If you choose not to make them gems, you can move them into, say, lib/my_plugin/*
and add an appropriate initializer in config/initializers/my_plugin.rb.
好的，那没问题，可以从供应商/插件复制到lib ...但是我必须如何设置初始化程序？ ...
初始化程序是在启动时执行的普通红宝石文件。 他们住在config/initializers
未初始化的常量Arel :: SqlLiteral升级到rails 4.2
[英]uninitialized constant Arel::SqlLiteral in upgrade to rails 4.2
Rails 4.2 升级到 5 导致 ActionController::InvalidAuthenticityToken
[英]Rails 4.2 Upgrade to 5 results in ActionController::InvalidAuthenticityToken
Rails 升级 4.2 -> 5 - Bundler 无法解析确切的 gem 版本
[英]Rails Upgrade 4.2 -> 5 - Bundler not able to resolve exact gem version
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