根據輸入的信息將用戶路由到不同的路徑

Question

我的userinfos控制器處理用戶信息。只要用戶註冊，我希望他們進入頁面，讓他們填寫用戶信息，如姓名，電子郵件，gpa，大學......讓我們說他們在填寫表格之前離開，當他們再次登錄時，我想檢查用戶信息是否已填寫，如果沒有，我想讓他們進入新的信息頁面。爲此，我將「info_complete」函數添加到我的userinfo模型中（如下所示）。 這裏是我的兩個模型，它會告訴你它們之間的關係。

USERINFO模型：

class Userinfo < ActiveRecord::Base 
    belongs_to :user 
    has_many :videos, through: :user 

    def info_complete? 
     name? && email? && college? && gpa? && major? 
    end 
end 

用戶模型：

class User < ActiveRecord::Base 
    has_many :userinfos 
    has_many :videos 

    # Include default devise modules. Others available are: 
    # :confirmable, :lockable, :timeoutable and :omniauthable 
    devise :database_authenticatable, :registerable, 
     :recoverable, :rememberable, :trackable, :validatable 
end 

然後添加以下代碼到應用控制器。 我的應用程序控制器：

class ApplicationController < ActionController::Base 
    protect_from_forgery with: :exception 

    def after_sign_in_path_for(resource) 
    if resource.userinfo.info_complete? 
     redirect_to root_path 
    else 
     redirect_to new_user_info_path 
    end 
    end 
end 

當我嘗試保存此之後登錄，我收到以下錯誤：

完整的錯誤跟蹤：

activemodel (4.2.3) lib/active_model/attribute_methods.rb:433:in `method_missing' 
app/controllers/application_controller.rb:5:in `after_sign_in_path_for' 
devise (4.3.0) app/controllers/devise/sessions_controller.rb:21:in `create' 
actionpack (4.2.3) lib/action_controller/metal/implicit_render.rb:4:in `send_action' 
actionpack (4.2.3) lib/abstract_controller/base.rb:198:in `process_action' 
actionpack (4.2.3) lib/action_controller/metal/rendering.rb:10:in `process_action' 
actionpack (4.2.3) lib/abstract_controller/callbacks.rb:20:in `block in process_action' 
activesupport (4.2.3) lib/active_support/callbacks.rb:115:in `call' 
activesupport (4.2.3) lib/active_support/callbacks.rb:553:in `block (2 levels) in compile' 
activesupport (4.2.3) lib/active_support/callbacks.rb:503:in `call' 
activesupport (4.2.3) lib/active_support/callbacks.rb:88:in `run_callbacks' 
actionpack (4.2.3) lib/abstract_controller/callbacks.rb:19:in `process_action' 
actionpack (4.2.3) lib/action_controller/metal/rescue.rb:29:in `process_action' 
actionpack (4.2.3) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action' 
activesupport (4.2.3) lib/active_support/notifications.rb:164:in `block in instrument' 
activesupport (4.2.3) lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
activesupport (4.2.3) lib/active_support/notifications.rb:164:in `instrument' 
actionpack (4.2.3) lib/action_controller/metal/instrumentation.rb:30:in `process_action' 
actionpack (4.2.3) lib/action_controller/metal/params_wrapper.rb:250:in `process_action' 
activerecord (4.2.3) lib/active_record/railties/controller_runtime.rb:18:in `process_action' 
actionpack (4.2.3) lib/abstract_controller/base.rb:137:in `process' 
actionview (4.2.3) lib/action_view/rendering.rb:30:in `process' 
actionpack (4.2.3) lib/action_controller/metal.rb:196:in `dispatch' 
actionpack (4.2.3) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch' 
actionpack (4.2.3) lib/action_controller/metal.rb:237:in `block in action' 
actionpack (4.2.3) lib/action_dispatch/routing/route_set.rb:76:in `dispatch' 
actionpack (4.2.3) lib/action_dispatch/routing/route_set.rb:45:in `serve' 
actionpack (4.2.3) lib/action_dispatch/routing/mapper.rb:49:in `serve' 
actionpack (4.2.3) lib/action_dispatch/journey/router.rb:43:in `block in serve' 
actionpack (4.2.3) lib/action_dispatch/journey/router.rb:30:in `each' 
actionpack (4.2.3) lib/action_dispatch/journey/router.rb:30:in `serve' 
actionpack (4.2.3) lib/action_dispatch/routing/route_set.rb:821:in `call' 
warden (1.2.7) lib/warden/manager.rb:36:in `block in call' 
warden (1.2.7) lib/warden/manager.rb:35:in `catch' 
warden (1.2.7) lib/warden/manager.rb:35:in `call' 
rack (1.6.8) lib/rack/etag.rb:24:in `call' 
rack (1.6.8) lib/rack/conditionalget.rb:38:in `call' 
rack (1.6.8) lib/rack/head.rb:13:in `call' 
actionpack (4.2.3) lib/action_dispatch/middleware/params_parser.rb:27:in `call' 
actionpack (4.2.3) lib/action_dispatch/middleware/flash.rb:260:in `call' 
rack (1.6.8) lib/rack/session/abstract/id.rb:225:in `context' 
rack (1.6.8) lib/rack/session/abstract/id.rb:220:in `call' 
actionpack (4.2.3) lib/action_dispatch/middleware/cookies.rb:560:in `call' 
activerecord (4.2.3) lib/active_record/query_cache.rb:36:in `call' 
activerecord (4.2.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:653:in `call' 
activerecord (4.2.3) lib/active_record/migration.rb:377:in `call' 
actionpack (4.2.3) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call' 
activesupport (4.2.3) lib/active_support/callbacks.rb:84:in `run_callbacks' 
actionpack (4.2.3) lib/action_dispatch/middleware/callbacks.rb:27:in `call' 
actionpack (4.2.3) lib/action_dispatch/middleware/reloader.rb:73:in `call' 
actionpack (4.2.3) lib/action_dispatch/middleware/remote_ip.rb:78:in `call' 
actionpack (4.2.3) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call' 
web-console (2.3.0) lib/web_console/middleware.rb:28:in `block in call' 
web-console (2.3.0) lib/web_console/middleware.rb:18:in `catch' 
web-console (2.3.0) lib/web_console/middleware.rb:18:in `call' 
actionpack (4.2.3) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call' 
railties (4.2.3) lib/rails/rack/logger.rb:38:in `call_app' 
railties (4.2.3) lib/rails/rack/logger.rb:20:in `block in call' 
activesupport (4.2.3) lib/active_support/tagged_logging.rb:68:in `block in tagged' 
activesupport (4.2.3) lib/active_support/tagged_logging.rb:26:in `tagged' 
activesupport (4.2.3) lib/active_support/tagged_logging.rb:68:in `tagged' 
railties (4.2.3) lib/rails/rack/logger.rb:20:in `call' 
actionpack (4.2.3) lib/action_dispatch/middleware/request_id.rb:21:in `call' 
rack (1.6.8) lib/rack/methodoverride.rb:22:in `call' 
rack (1.6.8) lib/rack/runtime.rb:18:in `call' 
activesupport (4.2.3) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call' 
rack (1.6.8) lib/rack/lock.rb:17:in `call' 
actionpack (4.2.3) lib/action_dispatch/middleware/static.rb:116:in `call' 
rack (1.6.8) lib/rack/sendfile.rb:113:in `call' 
railties (4.2.3) lib/rails/engine.rb:518:in `call' 
railties (4.2.3) lib/rails/application.rb:165:in `call' 
rack (1.6.8) lib/rack/lock.rb:17:in `call' 
rack (1.6.8) lib/rack/content_length.rb:15:in `call' 
rack (1.6.8) lib/rack/handler/webrick.rb:88:in `service' 
C:/tools/ruby23/lib/ruby/2.3.0/webrick/httpserver.rb:140:in `service' 
C:/tools/ruby23/lib/ruby/2.3.0/webrick/httpserver.rb:96:in `run' 
C:/tools/ruby23/lib/ruby/2.3.0/webrick/server.rb:296:in `block in start_thread' 

任何幫助表示讚賞。謝謝！

Answer 1

首先，看起來user和userinfo之間的關係有點混亂起來。

如果用戶真的可以have_many :userinfos，那麼爲什麼你只是試圖檢查其中之一？ （resource.userinfo.info_complete?）這不是有效的語法，因爲resource.userinfo（單數）甚至沒有定義;你需要可以寫爲：

resource.userinfos.all?(&:info_complete?) 
# or 
resource.userinfos.any?(&:info_complete?) 

或可替代（？可能是正確的答案），你應該更改爲模型的關係：

class User < ActiveRecord::Base 
    has_one :userinfo 

---

的第二個問題是， after_sign_in_path_for method應該只有返回路徑，而不是實際執行重定向。所以，該方法應該看起來更像：

def after_sign_in_path_for(resource) 
    if resource.userinfo.info_complete? 
     root_path 
    else 
     new_user_info_path 
    end 
    end