设计错误：电子邮件不能为空 [英] Devise error: email can't be blank

问题描述

（编辑：添加的development.log日志，未经许可的参数：电子邮件）

Devise正常工作，但我使用rails控制台删除所有用户，并尝试使一个新的用户。我收到一个错误，电子邮件不能为空白。当我删除：validatable block我得到这个错误。

我尝试返回提交，但所有其他提交都存在错误。我不知道它是否与数据库有关。

我的项目可以找到这里（我推最后一个提交）。我不知道问题在哪里，我可以复制的设计。我已经把一些代码放在这里可能会出现问题。

我可以通过rails控制台创建一个用户：

  u = User.new（：email =>[e-mail]，：username =>test，：password =>'password' ：password_confirmation =>'password'）
 u.save 
  

尝试注册时记录：

 处理由Devise :: RegistrationsController＃创建为HTML 
参数：{utf8=>✓ ，authenticity_token=>WQkgKxF8rIB1wAq8vnz4Y0bCv9Txlyv0eO8IyEmpEAk =，user=> {email=>[e-mail]，username=>test，password=> [FILTERED]，password_confirmation=>[FILTERED]}，commit=>注册} 
未经许可的参数：电子邮件
  / pre> 
 
 
 User.rb 
  class User< ActiveRecord :: Base 
 
 
 devise：database_authenticatable，：可注册，：omniauthable，
：可恢复，可记忆，可追踪，可验证
 
 attr_accessible ：提供，：uid，：name，：email，：password，：password_confirmation，：remember_me，：username 
 
 validates_presence_of：username 
 has_many：posts 
 
 def self.from_omniauth（auth）
其中（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）
如果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？ 
超级&& provider.blank？ 
 end 
 
 def update_with_password（params，* options）
如果encrypted_pa​​ssword.blank？ 
 update_attributes（params，* options）
 else 
 super 
 end 
 end 
 end 
  
 schema.rb 
  ActiveRecord :: Schema.define（ version => 20131118165834）do 
 
 create_tablephoto_posts，：force => true do | t | 
 t.stringimage_file_name
 t.stringimage_content_type
 t.integerimage_file_size
 t.datetimeimage_updated_at
 end 
 
 create_tableposts，：force => true do | t | 
 t.integeruser_id
 t.datetimecreated_at，：null => false 
 t.datetimeupdated_at，：null => false 
 t.stringcontent_type
 t.integercontent_id
 end 
 
 add_indexposts，[content_type，content_id]， name => index_posts_on_content_type_and_content_id
 add_indexposts，[user_id]，：name => index_posts_on_user_id
 
 create_tabletitle_posts，：force => true do | t | 
 t.stringbody
 end 
 
 create_tableusers，：force => true do | t | 
 t.stringemail，：default => ，：null => false 
 t.stringencrypted_pa​​ssword，：default => ，：null => false 
 t.stringreset_password_token
 t.datetimereset_password_sent_at
 t.datetimeremember_created_at
 t.integersign_in_count，，default => 0，：null => false 
 t.datetimecurrent_sign_in_at
 t.datetimelast_sign_in_at
 t.stringcurrent_sign_in_ip
 t.stringlast_sign_in_ip
 t.datetimecreated_at ，：null => false 
 t.datetimeupdated_at，：null => false 
 t.stringusername
 t.stringprovider
 t.stringuid
 t.stringname
 end 
 
 add_indexusers，[email]，：name => index_users_on_email，：unique => true 
 add_indexusers，[reset_password_token]，：name => index_users_on_reset_password_token，：unique => true 
 
 end 
  
 日志：
 
 
 
 在2013-11-24 00:23:12启动POST/ users为127.0.0.1 +0000 
处理参数：{utf8=>✓，authenticity_token=>awAC + Cn3qQgv2kMwZOlH8Zo60BuV4T41OnKjgvKeytE =，user=> {email= >[e-mail]，username="stttt，password=>[FILTERED]，password_confirmation=>[FILTERED]}，commit=> ;注册} 
未经允许的参数：电子邮件
 [1m [36m（0.0ms）[0m [1mbegin transaction [0m 
 [1m [35m（0.0ms）] [0m rollback transaction 
渲染设计/共享/ _links.erb（1.0ms）
布局/应用程序内的渲染设计/注册/ new.html.erb（15.0ms）
渲染布局/ _header.html.erb 4.0ms）
渲染布局/ _footer.html.erb（0.0ms）
在178.0ms完成200 OK（视图：72.0ms | ActiveRecord：0.0ms）
  
 
 
解决方案
发现错误是什么。我使用强大的参数，导致错误。更多 https://github.com/plataformatec/devise#strong-parameters  
 
 
 
所以解决方案是将它添加到你的application_controller.rb中
  ＃Rails 3.xx及以上
 before_filter：configure_permitted_pa​​rameters，如果：：devise_controller？ 
 
＃Rails 4.x.x和更新
 before_action：configure_permitted_pa​​rameters，如果：：devise_controller？ 
 
 def configure_permitted_pa​​rameters 
 devise_parameter_sanitizer.for（：sign_up）{| u | u.permit（：username，：email，：password，，password_confirmation）} 
 end 
  
请记住为每个动作配置：sign_in，sign_up，account_update等。
 
(Edit: added development.log logs, "Unpermitted parameters: email")

Devise was working fine but I deleted all users using rails console and tried to make a new user. I get an error that email can't be blank. When I remove the :validatable block I get this error.

I tried to go back to commits but the error exists on all other commits. I am not sure if its something to do with the database.

My project can be found here (I pushed the last commit). I am not sure where the problem is and what I can copy for devise. I have put some code here which may show the problem.

I was able to create a user through rails console using: 
u = User.new(:email => "[e-mail]", :username => "test", :password => 'password', :password_confirmation => 'password')
u.save
Logs when trying to signup:
Processing by Devise::RegistrationsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"WQkgKxF8rIB1wAq8vnz4Y0bCv9Txlyv0eO8IyEmpEAk=", "user"=>{"email"=>"[e-mail]", "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
logs:
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"=>"[e-mail]", "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)

解决方案
Found what the error is. I use strong parameters and that causes an error. More at https://github.com/plataformatec/devise#strong-parameters

So the solution is to add this into your application_controller.rb
# Rails 3.x.x and older
before_filter :configure_permitted_parameters, if: :devise_controller?

# Rails 4.x.x 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
Keep in mind to configure for each action like :sign_in, :sign_up, :account_update etc.

                        
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