Question

我正在使用RoR 5.2，devise和omniauth-trello gem。我无法使用Trello登录。我需要创建在没有现有用户的情况下使用返回的提供程序和uid登录的功能：如果不存在该用户，则应该创建用户。

我已经添加了 config / routes.rb：

devise_for :users, controllers: { omniauth_callbacks: 'omniauth_callbacks' }

config / initializers / devise.rb：

config.omniauth :trello, "#{Rails.application.credentials.trello[:key]}", "#{Rails.application.credentials.trello[:secret]}"

config / initializers / omniauth.rb

Rails.application.config.middleware.use OmniAuth::Builder do
      provider :trello, Rails.application.credentials.trello[:key], Rails.application.credentials.trello[:secret],
               app_name: "Trello-Rooney", scope: 'read,write,account', expiration: 'never'
end

app / controllers / omniauth_callbacks_controller.rb

class OmniauthCallbacksController < Devise::OmniauthCallbacksController

      def trello
        @user = User.from_omniauth(request.env['omniauth.auth'])

        if @user.persisted?
          sign_in_and_redirect @user, event: :authentication
          set_flash_message(:notice, :success, kind: 'Trello') if is_navigational_format?
        end
      end

end

app / models / user.rb

class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable, :omniauthable, omniauth_providers: %i[trello]


  def self.from_omniauth(auth)
    user = User.where(provider: auth.provider, uid: auth.uid.to_s).first
    return user if user

    email = auth.info[:email]

    while email.nil?
      generated_email = "#{SecureRandom.base58(10)}@roonyx.trello"
      if User.where(email: generated_email).blank?
        email = generated_email
      end
    end

    user = User.where(email: email).first

    if user
      user.update(provider: auth.provider, uid: auth.uid)
    else
      password = Devise.friendly_token[0, 12]
      user = User.create!(email: email, password: password, password_confirmation: password, provider: auth.provider, uid: auth.uid)
    end
    user
  end


end

但是当我尝试使用Trello登录时，我会在控制台中看到它。看起来它不会引起我的回调。有人可以帮忙吗？预先谢谢你。

E, [2019-05-13T14:10:29.647241 #19958] ERROR -- omniauth: (trello) Authentication failure! service_unavailable: Net::HTTPFatalError, 500 "Internal Server Error"
[2019-05-13 14:10:29] (pida=19958)   INFO -- : Processing by OmniauthCallbacksController#failure as HTML
[2019-05-13 14:10:29] (pida=19958)   INFO -- :   Parameters: {"oauth_token"=>"47215df2b25b4fc089953da32acf0730", "oauth_verifier"=>"8a0b310f2afe98d0aebbd2073efc5b54"}
[2019-05-13 14:10:29] (pida=19958)   INFO -- : Redirected to http://localhost:3000/users/sign_in
[2019-05-13 14:10:29] (pida=19958)   INFO -- : Completed 302 Found in 1ms (ActiveRecord: 0.0ms)

Answer 1

错误就在您的日志中： Authentication failure! service_unavailable: Net::HTTPFatalError, 500 "Internal Server Error"

因为您插入了OmniAuth::Builder中间件，所以未触发您的回调。您可以尝试删除它并检查与回调一起发送的params。

一旦删除了中间件，您就可以在回调操作的顶部放置一个byebug或一个binding.pry。进入调试器后，检查request.env['omniauth.auth']的值。那应该使您对问题所在有一些了解。在不了解环境的情况下很难说更多。

回调Omniauth-Trello（RoR）-无法登录

1 个答案: