after_sign_in_path_for(resource) 设计 + facebook omniauth

Question

我的用户模型有生日，如果在使用 Facebook 登录后它是空白的，我会尝试重定向到编辑页面。我尝试覆盖资源的 after_sign_in_path 但不断收到此错误：

在此操作中多次调用渲染和/或重定向。请注意，您只能调用渲染或重定向，并且每个操作最多调用一次。还要注意，redirect和render都不会终止action的执行，所以如果你想在redirect后退出一个action，你需要做一些类似“redirect_to(...) and return”的操作。

我的应用程序控制器：

class ApplicationController < ActionController::Base
  # Prevent CSRF attacks by raising an exception.
  # For APIs, you may want to use :null_session instead.
  protect_from_forgery with: :exception

  def after_sign_in_path_for(resource)
    stored_location_for(resource) ||
    if resource.birthday.blank?
      redirect_to edit_user_path(resource)
    end
    super
  end
end

还有我的 Omniauth 控制器：

class OmniauthCallbacksController < ApplicationController
  skip_before_filter :authenticate_user!

  def provides_callback_for
    user = User.from_omniauth(env["omniauth.auth"], current_user)
    if user.persisted?
      flash[:notice] = "You have signed in!"
    sign_in_and_redirect(user)
    else
      session['devise.user_attributed'] = user.attributes
      redirect_to new_user_registration_url
    end
  end

  def failure
    flash[:notice] = "Something went wrong!"
    redirect_to root_path
  end

  alias_method :facebook, :provides_callback_for
end

Answer 1

这应该可以解决问题：

def after_sign_in_path_for(resource)
    if resource.birthday.blank?
      edit_user_registration_url
    else
      super
    end
end