Rails Devise 在注册尝试时重定向以登录

在我尝试注册新用户后，Rails 现在重定向我以登录，您只会收到错误“您需要登录或注册才能继续”。新用户不会被保存到数据库中。

我的第一个想法是我正在重定向到需要身份验证的页面，但它不应该仍然创建一个新用户吗？我已经检查了我所有的控制器，唯一需要身份验证的控制器在创建、更新和销毁时都有。我有before_action :authenticate_user!, except: [:index, :show]两个控制器。这让我想到我的下一点，即身份验证不重要，因为我制作了一个注册控制器，在注册后重定向到主页（这是一个不需要身份验证的索引）。

注册控制器：

class RegistrationsController < Devise::RegistrationsController
  protected

  def after_sign_up_path_for(resource)
    root_path
  end
end

我的路线.rb：

Rails.application.routes.draw do
  root to: "home#index"
  devise_for :users, path: '', path_names: { sign_in: 'login', sign_out: 'logout', sign_up: 'register' }, 
    controllers: { registrations: "registrations" }

  resources :blogs do
    member do
      put 'like', to: 'blogs#upvote'
      put 'dislike', to: 'blogs#downvote'
    end
    resources :comments do
      member do
        put 'like', to: 'comments#upvote'
        put 'dislike', to: 'comments#downvote'
      end
    end
  end

  get 'tags/:tag', to: 'tags#show', as: :tag

  match '/users', to: 'users#index', via: 'get'
  match '/users/:id', to: 'users#show', via: 'get'

  #devise_for :users, :path_prefix => 'd'
  resources :users, :only =>[:show]
  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
end

我关注所有列入白名单的内容：

module DeviseWhitelist 
  extend ActiveSupport::Concern

  included do
    before_filter :configure_permitted_parameters, if: :devise_controller?
  end

  def configure_permitted_parameters
    devise_parameter_sanitizer.permit(:sign_up, keys: [:username])
    devise_parameter_sanitizer.permit(:account_update, keys: [:username, :picture, :picture_cache, :remove_picture])
  end
end

我的应用程序控制器：

class ApplicationController < ActionController::Base
  protect_from_forgery with: :exception
  include DeviseWhitelist
  include DefaultPageContent
end

还有我的用户模型：

class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  mount_uploader :picture, PictureUploader
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  validates_presence_of :username
  validates_presence_of :picture
  validates_integrity_of :picture
  validates_processing_of :picture

  has_many :blogs
  has_many :comments
  has_many :logs
  acts_as_voter

  private
    def picture_size_validation
      errors[:picture] << "should be less than 500KB" if picture.size > 0.5.megabytes
    end
end

还有我的注册表：

<h2>Sign up</h2>

<%= simple_form_for(resource, as: resource_name, url: registration_path(resource_name), html: { method: :put, multipart: true }) do |f| %>
  <%= f.error_notification %>

  <div class="form-inputs">
    <%= f.label :email %><br />
    <%= f.email_field :email, autofocus: true %><br />
    <%= f.input :password, required: true, hint: ("#{@minimum_password_length} characters minimum" if @minimum_password_length) %>
    <%= f.input :password_confirmation, required: true %>
    <%= f.label :username %><br />
    <%= f.text_field :username %><br />

    <%= f.label :picture do %>
    <%= f.file_field :picture %>
    <%= f.hidden_field :picture_cache %>
    <% end %>
  </div>

  <div class="form-actions">
    <%= f.button :submit, "Register" %>
  </div>
<% end %>

<%= render "devise/shared/links" %>

用户控制器：

class UsersController < ApplicationController

  def index
    @page_title = "Users"
    @users = User.all
  end

  def show
    @user = User.find(params[:id])
    @page_title = @user.username
    @blogs = @user.blogs
    @articles = @user.articles
    @logs = @user.logs
    @almost_everything = (@blogs + @articles).sort{|b,a| a.updated_at <=> b.updated_at }
    @everything = (@almost_everything + @logs).sort{|b,a| a.updated_at <=> b.updated_at }
  end

end

这是我尝试注册新用户的控制台结果：

Started PUT "/" for 70.59.200.105 at 2017-05-13 16:12:06 +0000
Cannot render console from 70.59.200.105! Allowed networks: 127.0.0.1, ::1, 127.0.0.0/127.255.255.255
Processing by RegistrationsController#update as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"uWuUhNMZzypqEDooxadjUf0/pIAXOJdmBuaynRSNvuqCSsx40FBPCOxt0howIiX9jLChlDsCmgmAtmGaqIMOzA==", "user"=>{"email"=>"[email protected]", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]", "username"=>"dave", "picture"=>#<ActionDispatch::Http::UploadedFile:0x007f38e4a702a0 @tempfile=#<Tempfile:/tmp/RackMultipart20170513-3045-wtfbgh.jpg>, @original_filename="42_ac79fe347c2c43c183e6d915b4922091.jpg", @content_type="image/jpeg", @headers="Content-Disposition: form-data; name=\"user[picture]\"; filename=\"42_ac79fe347c2c43c183e6d915b4922091.jpg\"\r\nContent-Type: image/jpeg\r\n">, "picture_cache"=>""}, "commit"=>"Register"}
Completed 401 Unauthorized in 1ms (ActiveRecord: 0.0ms)

Started GET "/login" for 70.59.200.105 at 2017-05-13 16:12:06 +0000
Cannot render console from 70.59.200.105! Allowed networks: 127.0.0.1, ::1, 127.0.0.0/127.255.255.255
Processing by Devise::SessionsController#new as HTML
  Rendering devise/sessions/new.html.erb within layouts/application
  Rendered devise/shared/_links.html.erb (2.1ms)
  Rendered devise/sessions/new.html.erb within layouts/application (19.8ms)
  Rendered shared/_nav.html.erb (5.5ms)
  Rendered shared/_footer.html.erb (8.0ms)
Completed 200 OK in 129ms (Views: 126.7ms | ActiveRecord: 0.0ms)

我觉得我已经检查了项目中的每个文件。为什么会发生这种情况？