设计错误：电子邮件不能为空
（编辑：添加了development.log日志，“未经许可的参数：电子邮件”）
Devise工作正常但我删除了所有使用rails控制台的用户，并试图建立一个新用户。 我收到错误， email can't be blank 。 当我删除:validatable块时，我收到此错误 。
我试图回到提交，但所有其他提交都存在错误。 我不确定它是否与数据库有关。
我的项目可以在这里找到（我推动了最后一次提交）。 我不确定问题出在哪里以及我可以为设计复制什么。 我在这里放了一些可能显示问题的代码。
我能够通过rails控制台创建用户：
u = User.new(:email => "user@name.com", :username => "test", :password => 'password', :password_confirmation => 'password') u.save
尝试注册时记录日志：
Processing by Devise::RegistrationsController#create as HTML Parameters: {"utf8"=>"✓", "authenticity_token"=>"WQkgKxF8rIB1wAq8vnz4Y0bCv9Txlyv0eO8IyEmpEAk=", "user"=>{"email"=>"user@example.com", "username"=>"test", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Sign up"} Unpermitted parameters: email
User.rb
class User < ActiveRecord::Base devise :database_authenticatable, :registerable, :omniauthable, :recoverable, :rememberable, :trackable, :validatable attr_accessible :provide, :uid, :name, :email, :password, :password_confirmation, :remember_me, :username validates_presence_of :username has_many :posts def self.from_omniauth(auth) where(auth.slice(:provider, :uid)).first_or_create do |user| user.provider = auth.provider user.uid = auth.uid user.username = auth.info.nickname end end def self.new_with_session(params, session) if session["devise.user_attributes"] new(session["devise.user_attributes"], without_protection: true) do |user| user.attributes = params user.valid? end else super end end def password_required? super && provider.blank? end def update_with_password(params, *options) if encrypted_password.blank? update_attributes(params, *options) else super end end end
schema.rb
ActiveRecord::Schema.define(:version => 20131118165834) do create_table "photo_posts", :force => true do |t| t.string "image_file_name" t.string "image_content_type" t.integer "image_file_size" t.datetime "image_updated_at" end create_table "posts", :force => true do |t| t.integer "user_id" t.datetime "created_at", :null => false t.datetime "updated_at", :null => false t.string "content_type" t.integer "content_id" end add_index "posts", ["content_type", "content_id"], :name => "index_posts_on_content_type_and_content_id" add_index "posts", ["user_id"], :name => "index_posts_on_user_id" create_table "title_posts", :force => true do |t| t.string "body" end create_table "users", :force => true do |t| t.string "email", :default => "", :null => false t.string "encrypted_password", :default => "", :null => false t.string "reset_password_token" t.datetime "reset_password_sent_at" t.datetime "remember_created_at" t.integer "sign_in_count", :default => 0, :null => false t.datetime "current_sign_in_at" t.datetime "last_sign_in_at" t.string "current_sign_in_ip" t.string "last_sign_in_ip" t.datetime "created_at", :null => false t.datetime "updated_at", :null => false t.string "username" t.string "provider" t.string "uid" t.string "name" end add_index "users", ["email"], :name => "index_users_on_email", :unique => true add_index "users", ["reset_password_token"], :name => "index_users_on_reset_password_token", :unique => true end
日志 ：
Started POST "/users" for 127.0.0.1 at 2013-11-24 00:23:12 +0000 Processing by Devise::RegistrationsController#create as HTML Parameters: {"utf8"=>"✓", "authenticity_token"=>"awAC+Cn3qQgv2kMwZOlH8Zo60BuV4T41OnKjgvKeytE=", "user"=>{"email"=>"user@example.com", "username"=>"stttt", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Sign up"} Unpermitted parameters: email [1m[36m (0.0ms)[0m [1mbegin transaction[0m [1m[35m (0.0ms)[0m rollback transaction Rendered devise/shared/_links.erb (1.0ms) Rendered devise/registrations/new.html.erb within layouts/application (15.0ms) Rendered layouts/_header.html.erb (4.0ms) Rendered layouts/_footer.html.erb (0.0ms) Completed 200 OK in 178.0ms (Views: 72.0ms | ActiveRecord: 0.0ms)
发现错误是什么。 我使用强参数，这会导致错误。 更多信息， 请访问https://github.com/plataformatec/devise#strong-parameters
所以解决方案是将它添加到您的application_controller.rb中
# Rails 3.xx and older before_filter :configure_permitted_parameters, if: :devise_controller? # Rails 4.xx and newer before_action :configure_permitted_parameters, if: :devise_controller? def configure_permitted_parameters devise_parameter_sanitizer.for(:sign_up) { |u| u.permit(:username, :email, :password, :password_confirmation) } end
请记住为每个操作配置如：sign_in，：sign_up，：account_update等。