Rails 3 + devise - 如何使用JSON进行回应 [英] Rails 3 + devise - How to get devise to respond with JSON

问题描述

我的环境是Rails 3.0.1与Devise 1.1。我正在开发移动Web应用程序，大多数都是使用javascript，并且希望尽可能多地保持基于JSON的通信。

有没有办法设计使用JSON响应成功/失败的消息，而不必遵循302重定向并解析HTML？

使用这个。

...但没有工作。 >

解决方案

您可以重新定义sign_in_and_redirect和sign_out_and_redirect设计助手，以渲染json而不是重定向用户。

我无法在初始化程序中重新定义它们，所以我发现最接近的解决方案是将其添加到application_controller.rb中：

  private 
 
＃覆盖默认设计登录/注销进程
 def sign_in_and_redirect（resource_or_scope，resource = nil）
 scope = Devise :: Mapping.find_scope！（res我们可以通过这个方法来实现这个功能，但是我们可以通过这个方法来实现这个功能：（1）
 resource || = resource_or_scope 
 sign_in（scope，resource） after_sign_in_path_for（resource）
 render：json => {：status => ：signed_in} 
 end 
 
 
 def sign_out_and_redirect（resource_or_scope）
 scope = Devise :: Mapping.find_scope！（resource_or_scope）
如果Devise.sign_out_all_scopes 
 sign_out_all_scopes 
 else 
 sign_out（scope）
 end 
 #redirect_to after_sign_out_path_for（scope）
 render：json => {：status => ：signed_out} 
 end 
  

如果有人有一个更清洁的解决方案，我也很感兴趣

My environment is Rails 3.0.1 with Devise 1.1. I am developing a mobile web application, mostly with javascript, and would like to keep as much of the communication JSON-based as possible.

Is there a way for devise to respond with a success/fail message with JSON, rather than having to follow a 302 redirect and parse the HTML?

Looked at using this.

...but don't have it working.

解决方案

You can redefine the sign_in_and_redirect and sign_out_and_redirect devise helpers, to render json instead of redirecting the user.

I couldn't redefine them in an initializer, so the closest solution I found is adding this to application_controller.rb :

private

# Override the default devise signin/signout process
def sign_in_and_redirect(resource_or_scope, resource=nil)
  scope      = Devise::Mapping.find_scope!(resource_or_scope)
  resource ||= resource_or_scope
  sign_in(scope, resource) unless warden.user(scope) == resource
  # redirect_to stored_location_for(scope) || after_sign_in_path_for(resource)
  render :json => {:status => :signed_in}
end


def sign_out_and_redirect(resource_or_scope)
  scope = Devise::Mapping.find_scope!(resource_or_scope)
  if Devise.sign_out_all_scopes
    sign_out_all_scopes
  else
    sign_out(scope)
  end
  #redirect_to after_sign_out_path_for(scope)
  render :json => {:status => :signed_out}
end

If anyone has a cleaner solution, I'm also interested

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