Rails 4 将登录设计为弹出窗口

您好，我正在使用设备对用户进行身份验证

我已经按照各种教程在弹出窗口中登录，但我没有成功，任何人都可以详细告诉我如何做到这一点。我已经尝试了各种教程，但没有任何效果，每件事都再次重定向到登录页面。

我是 Rails 的新手请帮忙。

我无法在同一页面上登录

这是我的 new.html.erb

<%= form_for(:user,  :html => {:id => 'login_form'}, :url => user_session_path, :remote => :true, :format => :json) do |f| %>

  <%= f.email_field :email, :autofocus => true, :placeholder => "email", :id => 'login_email' %>
  <%= f.password_field :password, :placeholder => "password", :id => 'login_password' %>

  <% if devise_mapping.rememberable? -%>
    <div><%= f.check_box :remember_me %> <%= f.label :remember_me %></div>
  <% end -%>

  <div><%= image_submit_tag('modals/account/login_submit.png') %></div>
<% end %>

这是我的标题页

 <% if user_signed_in? %>
  <p>Welcome <%= current_user.email %></p>
   <%= link_to "Sign out", destroy_user_session_path, :method => :delete %>
<% else %>
  <p>You are not signed in.</p>
  <%= link_to "Sign in", new_user_session_path, :remote => :true %>

<% end %>

首先，你想要一个弹出窗口或弹出窗口 http://www.quora.com/User-Interface-Design/Whats-the-difference-between-a-modal-a-popover-and-a-popup?

弹出窗口是新的 Windows，让人想起 90 年代的广告，而弹出窗口（有时称为模态窗口）是 UI 中的集成元素，基本上只是深色背景上的一个 div

所有 Web 2.0 网站都使用弹出窗口来增强可用性，而弹出窗口会降低体验:)

约夏克布丁

我们已经实现了您寻求的功能。

要使这项工作成功，您必须做好几件事 - 我将在这里为您详细介绍：

Routes

#config/routes.rb
devise_for :users, :path => '', :controllers => {:sessions => 'sessions', :registrations => 'registrations'}, :path_names => { :sign_in => 'login', :password => 'forgot', :confirmation => 'confirm', :unlock => 'unblock', :registration => 'register', :sign_up => 'new', :sign_out => 'logout'}

第一步是对您的路线进行排序

虽然设计有良好的路由文档 https://github.com/plataformatec/devise/wiki，您需要自定义您的路线以包括自定义session / registration控制器，以及您想要的任何自定义路径

路线最重要的部分是（您需要自定义控制器！）：

:controllers => {:sessions => 'sessions', :registrations => 'registrations'}

控制器

接下来，您需要将 ajax 响应功能添加到您的sessions and registrations控制器。尽管 Devise 在每次安装时都会添加这些控制器，但它们仍然是隐藏的，如果您想添加功能，则必须扩展它们

这是我们的会话和注册控制器（很多代码可以删除，但它现在对我们有用）：

Session

#app/controllers/sessions_controller.rb
class SessionsController < DeviseController
  prepend_before_filter :require_no_authentication, :only => [ :new, :create ]
  prepend_before_filter :allow_params_authentication!, :only => :create
  prepend_before_filter { request.env["devise.skip_timeout"] = true }
  
  prepend_view_path 'app/views/devise'
  
  # GET /resource/sign_in
  def new
    self.resource = resource_class.new(sign_in_params)
    clean_up_passwords(resource)
    respond_with(resource, serialize_options(resource))
  end

  # POST /resource/sign_in
  def create
    self.resource = warden.authenticate!(auth_options)
    set_flash_message(:notice, :signed_in) if is_navigational_format?
    sign_in(resource_name, resource)
    
    respond_to do |format|
        format.json { render :json => {}, :status => :ok }
        format.html { respond_with resource, :location => after_sign_in_path_for(resource) } 
    end
  end

  # DELETE /resource/sign_out
  def destroy
    redirect_path = after_sign_out_path_for(resource_name)
    signed_out = (Devise.sign_out_all_scopes ? sign_out : sign_out(resource_name))
    set_flash_message :notice, :signed_out if signed_out && is_navigational_format?

    # We actually need to hardcode this as Rails default responder doesn't
    # support returning empty response on GET request
    respond_to do |format|
      format.all { head :no_content }
      format.any(*navigational_formats) { redirect_to redirect_path }
    end
  end
  

  protected

  def sign_in_params
    devise_parameter_sanitizer.sanitize(:sign_in)
  end

  def serialize_options(resource)
    methods = resource_class.authentication_keys.dup
    methods = methods.keys if methods.is_a?(Hash)
    methods << :password if resource.respond_to?(:password)
    { :methods => methods, :only => [:password] }
  end

  def auth_options
    { :scope => resource_name, :recall => "#{controller_path}#new" }
  end
end

登记

#app/controllers/registrations_controller.rb
class RegistrationsController < DeviseController
  prepend_before_filter :require_no_authentication, :only => [ :new, :create, :cancel ]
  prepend_before_filter :authenticate_scope!, :only => [:edit, :update, :destroy]
  
  before_filter :configure_permitted_parameters
  
  prepend_view_path 'app/views/devise'

  # GET /resource/sign_up
  def new
    build_resource({})
    respond_with self.resource
  end

  # POST /resource
  def create
    build_resource(sign_up_params)

    if resource.save
      if resource.active_for_authentication?
        set_flash_message :notice, :signed_up if is_navigational_format?
        sign_up(resource_name, resource)
        respond_with resource, :location => after_sign_up_path_for(resource)
      else
        set_flash_message :notice, :"signed_up_but_#{resource.inactive_message}" if is_navigational_format?
        expire_session_data_after_sign_in!
        respond_with resource, :location => after_inactive_sign_up_path_for(resource)
      end
    else
      clean_up_passwords resource
      
      respond_to do |format|
        format.json { render :json => resource.errors, :status => :unprocessable_entity }
        format.html { respond_with resource }
      end
    end
  end

  # GET /resource/edit
  def edit
    render :edit
  end

  # PUT /resource
  # We need to use a copy of the resource because we don't want to change
  # the current user in place.
  def update
    self.resource = resource_class.to_adapter.get!(send(:"current_#{resource_name}").to_key)
    prev_unconfirmed_email = resource.unconfirmed_email if resource.respond_to?(:unconfirmed_email)

    if update_resource(resource, account_update_params)
      if is_navigational_format?
        flash_key = update_needs_confirmation?(resource, prev_unconfirmed_email) ?
          :update_needs_confirmation : :updated
        set_flash_message :notice, flash_key
      end
      sign_in resource_name, resource, :bypass => true
      respond_with resource, :location => after_update_path_for(resource)
    else
      clean_up_passwords resource
      respond_with resource
    end
  end

  # DELETE /resource
  def destroy
    resource.destroy
    Devise.sign_out_all_scopes ? sign_out : sign_out(resource_name)
    set_flash_message :notice, :destroyed if is_navigational_format?
    respond_with_navigational(resource){ redirect_to after_sign_out_path_for(resource_name) }
  end

  # GET /resource/cancel
  # Forces the session data which is usually expired after sign
  # in to be expired now. This is useful if the user wants to
  # cancel oauth signing in/up in the middle of the process,
  # removing all OAuth session data.
  def cancel
    expire_session_data_after_sign_in!
    redirect_to new_registration_path(resource_name)
  end

  protected
  
  # Custom Fields
  def configure_permitted_parameters
    devise_parameter_sanitizer.for(:sign_up) do |u|
      u.permit(:first_name, :last_name,
        :email, :password, :password_confirmation)
    end
  end

  def update_needs_confirmation?(resource, previous)
    resource.respond_to?(:pending_reconfirmation?) &&
      resource.pending_reconfirmation? &&
      previous != resource.unconfirmed_email
  end

  # By default we want to require a password checks on update.
  # You can overwrite this method in your own RegistrationsController.
  def update_resource(resource, params)
    resource.update_with_password(params)
  end

  # Build a devise resource passing in the session. Useful to move
  # temporary session data to the newly created user.
  def build_resource(hash=nil)
    self.resource = resource_class.new_with_session(hash || {}, session)
  end

  # Signs in a user on sign up. You can overwrite this method in your own
  # RegistrationsController.
  def sign_up(resource_name, resource)
    sign_in(resource_name, resource)
  end

  # The path used after sign up. You need to overwrite this method
  # in your own RegistrationsController.
  def after_sign_up_path_for(resource)
    after_sign_in_path_for(resource)
  end

  # The path used after sign up for inactive accounts. You need to overwrite
  # this method in your own RegistrationsController.
  def after_inactive_sign_up_path_for(resource)
    respond_to?(:root_path) ? root_path : "/"
  end

  # The default url to be used after updating a resource. You need to overwrite
  # this method in your own RegistrationsController.
  def after_update_path_for(resource)
    signed_in_root_path(resource)
  end

  # Authenticates the current scope and gets the current resource from the session.
  def authenticate_scope!
    send(:"authenticate_#{resource_name}!", :force => true)
    self.resource = send(:"current_#{resource_name}")
  end

  def sign_up_params
    devise_parameter_sanitizer.sanitize(:sign_up)
  end

  def account_update_params
    devise_parameter_sanitizer.sanitize(:account_update)
  end
end

Forms

添加后端功能后，您必须使表单支持 ajax。这很简单：

Login

#app/views/devise/sessions/new.html.erb
<%= form_for(devise_resource, :as => devise_resource_name, :html => {:id => 'login_form'}, :url => user_session_path, :remote => :true, :format => :json) do |f| %>

  <%= f.email_field :email, :autofocus => true, :placeholder => "email", :id => 'login_email' %>
  <%= f.password_field :password, :placeholder => "password", :id => 'login_password' %>

  <% if devise_mapping.rememberable? -%>
    <div><%= f.check_box :remember_me %> <%= f.label :remember_me %></div>
  <% end -%>

  <div><%= image_submit_tag('modals/account/login_submit.png') %></div>
<% end %>

Register

#app/views/devise/registrations/new.html.erb
<%= form_for(devise_resource, :as => devise_resource_name, :html => {:id => 'register_form'}, :url => user_registration_path, :remote => :true, :format => :json) do |f| %>
    
    <div class="name_input_container">
        <div class="name_input_cell">
            <%= f.text_field :first_name, :autofocus => true, :class => 'first_name', :placeholder => 'first name' %>
            <div class="error"><%= devise_resource.errors[:first_name].first if devise_resource.errors[:first_name].present? %></div>
        </div>
        
        <div class="name_input_cell_right">
            <%= f.text_field :last_name, :class => 'last_name', :placeholder => 'last name' %>
            <div class="error"><%= devise_resource.errors[:last_name].first if devise_resource.errors[:last_name].present? %></div>
        </div>
    </div>
    
    <%= f.email_field :email, :placeholder => "email" %>
    <div class="error"><%= devise_resource.errors[:email].first if devise_resource.errors[:email].present? %></div>
    
    <%= f.password_field :password, :placeholder => "password", :title => "8+ characters" %>
    <div class="error"><%= devise_resource.errors[:password].first if devise_resource.errors[:password].present? %></div>
    
    <%= f.password_field :password_confirmation, :placeholder => "confirm password" %>
    <div class="error"><%= devise_resource.errors[:password_confirmation].first if devise_resource.errors[:password_confirmation].present? %></div>

    <div class="option_buttons">
        <div class="already_registered">
            <%= link_to 'already registered?', '#', :class => 'already_registered', :id => 'already_registered', :view => 'login' %>
        </div>
        <%= image_submit_tag('modals/account/register_submit.png', :class => 'go') %>
        <div class="clear"></div>
    </div>
<% end %>

JavaScript

最后，您只需要能够处理来自 Ajax 的响应：

Login

//app/assets/javscripts/application.js
$(document).on('submit', '#login_form', function(e) {
            //do stuff here
}).on('ajax:success', '#login_form', function(e, data, status, xhr) {
        //do stuff here 
}).on('ajax:error', '#login_form', function(e, data, status, xhr) {
        //do stuff here
});

Register

//app/assets/javascripts/application.js
$(document).on('submit', '#register_form', function(e){
    //do stuff here
}).on('ajax:success', '#register_form', function(e, data, status, xhr) {
    //do stuff here
}).on('ajax:error', '#register_form', function(e, data, status, xhr) {
       //do stuff here  
});