如何在Rails 3中为自定义Devise控制器设置默认格式(如JSON)? [英] How do I set the default format, like JSON, for a customized Devise controller in Rails 3?

问题描述

我的Rails 3应用程序为我的Devise + OmniAuth集成提供了三个自定义的控制器.我需要覆盖用于用户注册和会话的标准方法，例如"new".我特别需要控制器方法来处理与JSON格式兼容的重定向和响应.

My Rails 3 app has three customized controllers for my Devise + OmniAuth integration. I needed to override the standard methods, like 'new', for user registrations and sessions. I specifically needed the controller methods to handle redirects and responses that are compatible with JSON formatting.

在routes.rb文件中，我具有以下内容:

In my routes.rb file I have the following:

devise_for :users, :controllers => { 
      :omniauth_callbacks => "users/omniauth_callbacks", 
      :registrations      => "users/registrations", 
      :sessions           => "users/sessions"
}

那可以按预期工作.我的路线现在显示自定义控制器路线，例如:

That works as expected. My routes now show the custom controller routes like:

new_user_session GET  /users/sign_in(.:format) {
      :action      =>"new", 
      :controller  =>"users/sessions"
}

new_user_registration GET /users/sign_up(.:format) {
      :action=>"new", 
      :controller=>"users/registrations"
}

要为资源设置默认格式，我将执行以下操作:

To set the default format for a resource I would do something like this:

resources :users, :defaults => { 
      :format => 'json' 
}

所以，我尝试了这个:

namespace "users" do
  resources :registrations, :defaults => { 
      :format => 'json' }
  resources :sessions, :defaults => { 
      :format => 'json' }
end

哪个没有按预期工作.我结束了这些路线:

Which did not work as expected. I ended up with these routes:

new_users_registration GET /users/registrations/new(.:format) {
      :format=>"json", 
      :action=>"new", 
      :controller=>"users/registrations"
}

new_users_session GET /users/sessions/new(.:format) {
      :format=>"json", 
      :action=>"new", 
      :controller=>"users/sessions"
}

为了使其能够与我在Devise中的自定义替代一起使用，我需要设置格式为"new_user_registration"而不是"new_users_registration".

In order for this to work with my custom overrides in Devise, I need to format 'new_user_registration' not 'new_users_registration'.

我检查了'devise_for'方法，它没有:defaults选项.我可以使用'devise_scope'方法来设置单独的路由，但这似乎远不如:defaults惯用语那么简单.

I checked the 'devise_for' method and it does not have a :defaults option. I can use the 'devise_scope' method to set the individual routes, but that seems far less concise that the :defaults idiom.

有人知道我可以用来实现这一目标的任何路由魔术吗?

Does anyone know of any routing magic that I can use to make this happen?

推荐答案

我找到了一个不一定令人满意的答案，但它可行.我在routes.rb中尝试过:

I found an answer that isn't necessarily satisfying, but it works. I tried this in routes.rb:

devise_scope :user do
 get "sign_up", :to => "users/registrations#new", 
                :defaults => { :format => 'json' }
end

然后我在自定义控制器中尝试了此操作

And I tried this in my custom controllers:

redirect_to new_user_registration_url, :format => 'json'

都不起作用.我猜这两个在实现上都是不正确的.我终于在自定义控制器中使用了它:

Neither worked. I am guessing both of those were incorrect in implementation. I finally used this in my custom controllers:

redirect_to :controller => 'users/registrations', 
            :action => 'new', 
            :format => 'json'

这取代了我最初拥有的所有地方:

That replaced everywhere I originally had:

redirect_to new_user_registration_url

它比我喜欢的更冗长，并且不是很干，但是它可以工作.

It's more verbose than I like and not very DRY, but it works.

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