Devise不会创建用户，重定向回注册页面

Question

通常情况下，当我添加新用户时，Devise会完美运行。现在，我无法弄清楚为什么会出现这个问题，因为从服务器控制台真的没什么可说的。我用friendly_id btw敲打用户名。我在为配置文件创建的设计之外有第二个users_controller。我怀疑这是Devise不起作用的原因，因为它没有将它用作子类。

以下是我的user.rb

的内容

validates :username, :presence => true, :uniqueness => {:case_sensitive => false }
  validate :validate_username
  validates_uniqueness_of :username, :email
  validates_presence_of :email, :username
  validates :username,
            :presence => true,
            :uniqueness => { :case_sensitive => false },
            :format => { with: /\A[a-zA-Z]+\z/ },
            :length => { in: 4..20 }
  validate :password_complexity
 => true

  #Changes Devise method to accept both email and username for the login method.
  def self.find_first_by_auth_conditions(warden_conditions)
    conditions = warden_conditions.dup
    if login = conditions.delete(:login)
      where(conditions).where(["lower(username) = :value OR lower(email) = :value", { :value => login.downcase }]).first
    else
      if conditions[:username].nil?
        where(conditions).first
      else
        where(username: conditions[:username]).first
      end
    end
  end

  #Checks if Password format is correct
  def password_complexity
    if password.present? && !password.match(/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d). /)
      errors.add :password, "must include at least one lowercase letter, one uppercase letter, and one number"
    end
  end

  #Checks if username exist in the database
  def validate_username
    if User.where(email: username).exists?
      errors.add(:username, :invalid)
    end
  end

Users_Controller.rb（以防您发现可能导致Devise中断的原因）

class UsersController < ApplicationController
  before_action :authenticate_user!, only: [:edit, :update]
  before_filter :set_user, only: [:show, :edit, :update]

  def index
    @users = User.friendly.all.paginate(page: params[:page], :per_page => 45)
  end

  def show
    @user = User.friendly.find(params[:id])
    @posts = @user.posts.paginate(:page => params[:page], :per_page => 30)
  end

  def edit
    @user.build_profile if @user.profile.nil?
  end


  def update
    if @user.update(user_params, id: id)
      redirect_to user_profile_path(@user)
    else
      render 'edit'
    end
  end

  def follow
    @user = User.find(params[:id])
    current_user.follow(@user)
    redirect_to :back
  end

  private

  def set_user
    @user = User.find(params[:id])
  end

  def user_params
    params.require(:user).permit(:username, profile_attributes: [:id, :name, :birthday, :sex, :tel, :address, :tagline, :introduction, :avatar])
  end
end

application_controller.rb

class ApplicationController < ActionController::Base
  # Prevent CSRF attacks by raising an exception.
  # For APIs, you may want to use :null_session instead.
  protect_from_forgery with: :exception
  before_filter :configure_permitted_parameters, if: :devise_controller?
  helper_method :current_user_subscribed?

  def current_user_subscribed?
    user_signed_in? && current_user.subscribed?
  end

  private

  def after_sign_up_path_for(resource)
    home_path(resource)
  end

  def after_update_path_for(resource)
    home_path(resource)
  end

  def after_sign_in_path_for(resource)
    hub_index_path(resource)
  end

  protected
  def configure_permitted_parameters
    devise_parameter_sanitizer.for(:sign_up) { |u| u.permit(:username, :email, :password, :avatar) }
    devise_parameter_sanitizer.for(:sign_in) { |u| u.permit(:login, :username, :email, :password, :remember_me) }
    devise_parameter_sanitizer.for(:account_update) { |u| u.permit(:username, :email, :password, :current_password, :avatar) }
  end

end

这是服务器响应

Started GET "/users/sign_up" for 127.0.0.1 at 2015-12-26 19:22:55 -0500
Processing by Devise::RegistrationsController#new as HTML
  Rendered users/registrations/new.html.erb within layouts/application (89.1ms)
Completed 200 OK in 626ms (Views: 605.4ms | ActiveRecord: 0.0ms)


Started GET "/users/sign_up?utf8=%E2%9C%93&authenticity_token=6KXAPkbVLgpCOV1mu6j9yHw%2Bif2PkrecoPLqFP08yT644658a74HyN1BAmAUXQ93WPjfSJEwVX6NN5EyfFxyoQ%3D%3D&user%5Busername%5D=Bigjohn&user%5Bavatar%5D=&user%5Bemail%5D=john1002%40hotmail.com&user%5Bpassword%5D=[FILTERED]&user%5Bpassword_confirmation%5D=[FILTERED]&commit=Sign+up" for 127.0.0.1 at 2015-12-26 19:27:11 -0500
Processing by Devise::RegistrationsController#new as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"6KXAPkbVLgpCOV1mu6j9yHw+if2PkrecoPLqFP08yT644658a74HyN1BAmAUXQ93WPjfSJEwVX6NN5EyfFxyoQ==", "user"=>{"username"=>"Bigjohn", "avatar"=>"", "email"=>"john1002@hotmail.com", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Sign up"}
  Rendered users/registrations/new.html.erb within layouts/application (14.0ms)
Completed 200 OK in 508ms (Views: 507.3ms | ActiveRecord: 0.0ms)

以下是用户的new.html.erb表单

<div class="container-fluid">
    <form class="form-horizontal sign-up-form-padding">
      <%= simple_form_for(resource, as: resource_name, url: registration_path(resource_name), html: {multipart: true }) do |f| %>
          <%= f.error_notification %>
          <div class="col-md-6 registration-form-col-centered">
            <div class="sign-up-label">
              <h1>Register</h1>
            </div>
            <fieldset class="form-group">
              <label style="font-weight: bold;">Username</label>
              <div class="form-control">
                <%= f.input :username, label: false %>
              </div>
              <small class="text-muted">Choose a cool username for your profile</small>
            </fieldset>
            <fieldset class="form-group">
              <label style="font-weight: bold">Upload an Avatar Photo</label>

              <div class="form-control">
                <%= f.file_field :avatar, required: false %>
              </div>
            </fieldset>
            <fieldset class="form-group">
              <label style="font-weight: bold">Email</label>

              <div class="form-control">
                <%= f.input :email, required: true, autofocus: true, label: false %>
              </div>
            </fieldset>
            <div class="form-group">
              <label style="font-weight: bold">Password</label>

              <div class="form-control">
                <%= f.input :password, required: true, label: false, hint: ("#{@minimum_password_length} characters minimum" if @minimum_password_length) %>
              </div>
            </div>
            <div class="form-group">
              <label style="font-weight: bold">Confirm Your Password</label>

              <div class="form-control">
                <%= f.input :password_confirmation, required: true, label: false %>
              </div>
            </div>

            <div class="form-actions">
              <%= f.submit 'Sign up', class: 'btn btn-success btn-lg btn-block' %>
            </div>
          </div>
      <% end %>
    </form>
  </div>

的routes.rb

devise_for :users
  get 'welcome/home', :as => 'home'
  get 'welcome/about', :as => 'about'
  get 'welcome/contact', :as => 'contact'
  get 'welcome/help', :as => 'help'
  get 'welcome/blog', :as => 'blog'
  get 'welcome/privacy', :as => 'privacy'
  get 'welcome/media', :as => 'media'
  get 'welcome/developers', :as => 'developers'
  #get ':id' => 'users#show', :as => :user_profile
  get 'subscription/show'
  get 'subscription/new'
  get 'subscription/create'
  get 'subscription/destroy'
  get 'hub/index'
  #get ':id/setting' => 'users#edit', :as => :user_setting
  #match ':id/setting' => 'users#update', via: [:put, :patch]
  root 'welcome#home'
  resource :subscription
  resources :posts, :only => [:index, :create, :show, :new ]
  resources :posts do
    put 'like', to: 'link#upvote'
    put 'dislike', to: 'link#downvote'
  end

  resources :users do
    member do
      get :follow
      get :unfollow
    end
  end