我们正在为我们的几个共享应用程序编写一个包含多个常见 gem 的 gem。我们希望能够在消费应用程序中进行配置application.rb
或类似的enviroment.rb/*rb
东西config.fruit_chain.enable_transport = true
,以有条件地需要一个 gem,并且它是动态的初始化器。但是来自普通 gem 的初始化程序不会在 railtie 中的 require 之后运行。我想知道是否有更好的方法来做到这一点
Fruit_store/config/application.rb 。(消费应用)
module FruitStore
class Application < Rails::Application
# Initialize configuration defaults for originally generated Rails version.
config.load_defaults 5.2
config.fruit_chain.enable_transport = true
end
end
fruit_chain/lib/fruit_chain.rb(我们的宝石)
require analytic
- require transport <----- removed this so it dose not autoload
require marketing
...
module FruitChain
end
fruit_chain/lib/fruit_chain/rails/railtie.rb
module FruitChain
module Rails
class Railtie < ::Rails::Railtie
config.fruit_chain = ActiveSupport::OrderedOptions.new
config.fruit_chain.enable_transport = false
config.before_initialize do |app|
if app.config.fruit_chain.enable_transport
Kernel.require 'transport' <--- this require the gem correct and load it up
app.initializers.find{
|a| a.name === 'transport.configure'
}.run <--- transport.configure initializer doesn't kick off
end
end
end
end
end
运输/lib/transport.rb 。(依赖普通宝石)
require transport/rails/railtie
...
module Transport
end
运输/lib/transport/rails/railtie.rb
module Transport
module Rails
class Railtie < ::Rails::Railtie
initializer 'transport.configure' do |app|
...
end
end
end
end