redirect_to使用PATCH谓词不GET

Question

我正在将我的一些rails 4应用程序中的一些请求迁移到ajax，并且在重定向时遇到了一些麻烦。

在主页上，我有一个可以启用/禁用的项目列表，非常简单。这是所有照顾两个中的一个环节<%= link_to "disable", toggle_my_class_path(my_class), method: "PATCH", remote: true %>

在ApplicationController我有一个before_action来检查，如果当前用户登录，如果不是他们重定向到显示在日志中形式的主页。

def require_login 
    unless current_user 
    redirect_to root_url, :notice => "Please log in" 
    end 
end 

的问题是，（我认为），因为Ajax调用不知何故被用于代替GET这是造成路由问题PATCH动词。下面是从我的呼叫日志输出

Started PATCH "/my_class/2/toggle" for 127.0.0.1 at 2014-04-10 16:33:52 -0500 
Processing by MyClassController#toggle as JS 
    Parameters: {"id"=>"2"} 
Can't verify CSRF token authenticity 
    (0.1ms) SELECT COUNT(*) FROM "users" 
Redirected to http://localhost:3000/ 
Filter chain halted as :require_login rendered or redirected 
Completed 302 Found in 9ms (ActiveRecord: 1.3ms) 


Started PATCH "/" for 127.0.0.1 at 2014-04-10 16:33:56 -0500 

ActionController::RoutingError (No route matches [PATCH] "/"): 
    actionpack (4.0.0) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call' 
    actionpack (4.0.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call' 
    railties (4.0.0) lib/rails/rack/logger.rb:38:in `call_app' 
    railties (4.0.0) lib/rails/rack/logger.rb:21:in `block in call' 
    activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in `block in tagged' 
    activesupport (4.0.0) lib/active_support/tagged_logging.rb:25:in `tagged' 
    activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in `tagged' 
    railties (4.0.0) lib/rails/rack/logger.rb:21:in `call' 
    actionpack (4.0.0) lib/action_dispatch/middleware/request_id.rb:21:in `call' 
    rack (1.5.2) lib/rack/methodoverride.rb:21:in `call' 
    rack (1.5.2) lib/rack/runtime.rb:17:in `call' 
    activesupport (4.0.0) lib/active_support/cache/strategy/local_cache.rb:83:in `call' 
    rack (1.5.2) lib/rack/lock.rb:17:in `call' 
    actionpack (4.0.0) lib/action_dispatch/middleware/static.rb:64:in `call' 
    railties (4.0.0) lib/rails/engine.rb:511:in `call' 
    railties (4.0.0) lib/rails/application.rb:97:in `call' 
    rack (1.5.2) lib/rack/lock.rb:17:in `call' 
    rack (1.5.2) lib/rack/content_length.rb:14:in `call' 
    rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service' 
    /home/***/.rvm/rubies/ruby-head/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service' 
    /home/***/.rvm/rubies/ruby-head/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run' 
    /home/***/.rvm/rubies/ruby-head/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread' 

你可以看到，的ActionController :: RoutingError（无路由匹配[PATCH]“/”）：是问题

我不知道的一种解决方法。我不想PATCH动词被使用，但我似乎无法找到一种方法来指定动词redirect_to

有什么想法？

Answer 1

您不能在ajax调用中从服务器端（控制器）重定向。一切通过javascript检索返回到javacript;网络浏览器期待一些javascript被评估。

所以你需要执行使用JavaScript的重定向。

例如，您可以更改before_action（代码未测试）：

def require_login 
    unless current_user 
    if request.xhr? 
     flash[:notice] = "Please log in" 
     flash.keep(:notice) # Keep flash notice for the redirect 
     render js: "window.location = #{root_url.to_json}" # js to be evaluated 
    else 
     redirect_to root_url, :notice => "Please log in" 
    end 
    end 
end