before_filter set_locale except controller

问题

My routes.rb

MyApp::Application.routes.draw do
 scope '(:locale)' do
  #all resources here
 end
 namespace :blog do
  resources :posts, :only => [:index, :show]
 end
end

My application_controller.rb

class ApplicationController < ActionController::Base
 #
 #
 before_filter :set_locale

 private

 def default_url_options(options = {})
   {locale: I18n.locale}
 end

 def set_locale
   #code for detect locale here
 end
 #
 #
end

All the resources inside scope '(:locale)' is working fine.

However I don't want use locale with namespace :blog and when I try click on blog links I can see this url http://localhost:3000/blog/posts?locale=en

How can I remove locale of namespace :blog... and blog resource?. I want get a url something like http://localhost:3000/blog/posts I want to remove the ?locale=en

Thanks!

回答1:

Use skip_before_filter in your Blog controllers?

回答2:

Given what you said in the comments, try only including the locale in your default_url_options if the current controller is not the PostsController, which would hopefully get rid of the trailing
?locale=en issue. Perhaps something like:

 def default_url_options(options = {})
   { locale: I18n.locale } unless controller_name == 'posts'
 end

Or, since default_url_options is depreciated, if you want to use url_options, perhaps something like:

def url_options
  controller_name == 'posts' ? super : { locale: I18n.locale }.merge(super)
end

Neither of the above tested, so I'm not sure either of them will work.

Edit

How about if you set the locale to nil like in this StackOverflow Q&A? So maybe something like:

def url_options
  locale = controller_name == 'posts' ? nil : I18n.locale
  { locale: locale }.merge(super)
end

来源：https://stackoverflow.com/questions/15767715/before-filter-set-locale-except-controller