我有一个rais 3应用程序,它使用devise和omniauth允许用户通过他们的Twitter帐户和/或本地登录凭据注册/登录。一切正常,可以注册和登录。当用户选择在没有首先建立本地密码的情况下销毁他们的Twitter授权时,我的问题就出现了。如果用户破坏了他们的授权,那么我想将它们路由到new_password_path,以便他们可以为将来的登录选择密码。
这是控制器代码:
class AuthenticationsController < ApplicationController
before_filter :authenticate_user!, :except => [:create, :failure]
def create
omniauth = request.env["omniauth.auth"]
authentication = Authentication.find_by_provider_and_uid(omniauth['provider'], omniauth['uid'])
if authentication #existing user is logging-in with existing authentication service
flash[:notice] = "Signed in successfully."
set_home_location_cookies(authentication.user, authentication.user.home_lat, authentication.user.home_lng)
sign_in(:user, authentication.user)
redirect_to root_path
elsif current_user #existing user who is already logged-in is creating a new authentication service for future use
current_user.authentications.create!(:provider => omniauth['provider'], :uid => omniauth['uid'], :token => omniauth['credentials']['token'])
current_user.update_posting_preferences(omniauth['provider'])
flash[:notice] = "Successfully linked to your #{omniauth['provider'].titleize} account."
redirect_to root_path
else #new user is creating a new authentication service and logging in
user = User.new
user.apply_omniauth(omniauth)
if user.save
flash[:notice] = "Signed in successfully."
sign_in(:user, user)
redirect_to root_path
else
session[:omniauth] = omniauth.except('extra')
session[:user_message] = {:success => false, :message => "userSaveError"}
redirect_to new_user_registration_url
end
end
end
def failure
flash[:alert] = "Could not authorize you from your social service."
redirect_to root_path
end
def destroy
@authentication = current_user.authentications.find(params[:id])
current_user.update_posting_preferences(@authentication.provider)
@authentication.destroy
flash[:notice] = "You have successfully destroyed your link to your #{@authentication.provider.titleize} account."
if current_user.authentications.empty? && current_user.encrypted_password.empty?
sign_out
flash[:alert] = "Alert: Your account does not currently have a password for account authorization. You are in danger of losing your account unless you create a new password by using this form."
redirect_to new_password_path(current_user) and return
else
redirect_back_or(root_path)
end
end
代码导致我的redirect_to new_password_path(current_user) and return
命令触发“无法找到nil的有效映射”错误
我非常感谢帮助找出这个问题。
谢谢!
答案 0 :(得分:1)
行。我会承认的。我从教程中实现了身份验证控制器,而没有研究设计路由,以了解幕后发生的事情。昨晚我查看了文档并找出了问题所在。有趣的是,上面的例程确实适用于较旧版本的设计,但不适用于设计1.5.3。
在destroy操作中,我签出了current_user,然后我尝试路由到发送“current_user”的new_password_path作为参数。毫不奇怪,在那一点上,“current_user”被淘汰了。所以,我得到了“找不到有效的nil映射”错误。这是我的简单修复:
def destroy
@authentication = current_user.authentications.find(params[:id])
user = current_user
current_user.update_posting_preferences(@authentication.provider)
@authentication.destroy
flash[:notice] = "You have successfully destroyed your link to your #{@authentication.provider.titleize} account."
if current_user.authentications.empty? && current_user.encrypted_password.empty?
sign_out
flash[:alert] = "Alert: Your account does not currently have a password for account authorization. You are in danger of losing your account unless you create a new password by using this form."
redirect_to new_password_path(user) and return
else
redirect_back_or(root_path)
end
end