设计 - Omniauth - 如果用户通过Facebook登录，则隐藏密码字段

Question

使用Devise与Omniauth我成功地允许用户使用他们的Facebook帐户登录。在Omniauth wiki的帮助下，我还能够禁用在编辑帐户时输入密码。

我遇到的当前问题是，如果他们通过Facebook注册，则将密码字段隐藏在我的registrations#edit视图中。作为两个宝石的新手我还在努力调整。因此，在设置必要的辅助方法时，我有点不知所措。

根据维基的指示，这是我的注册控制器的样子：

class RegistrationsController < Devise::RegistrationsController
  before_filter :configure_permitted_parameters, if: :devise_controller?

  def update
    @user = User.find(current_user.id)

    successfully_updated = if needs_password?(@user, params)
      @user.update_with_password(devise_parameter_sanitizer.sanitize(:account_update))
    else
      # remove the virtual current_password attribute
      # update_without_password doesn't know how to ignore it
      params[:user].delete(:current_password)
      @user.update_without_password(devise_parameter_sanitizer.sanitize(:account_update))
    end

    if successfully_updated
      set_flash_message :notice, :updated
      # Sign in the user bypassing validation in case their password changed
      sign_in @user, :bypass => true
      redirect_to after_update_path_for(@user)
    else
      render "edit"
    end
  end

  private

  # check if we need password to update user data
  # ie if password or email was changed
  # extend this as needed
  def needs_password?(user, params)
    user.email != params[:user][:email] ||
      params[:user][:password].present? ||
      params[:user][:password_confirmation].present?
  end

  protected

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

这是我的registrations#edit观点：

<% provide :title, 'Edit Profile' %>

<h2>Edit <%= resource_name.to_s.humanize %></h2>

<%= form_for(resource, as: resource_name, url: registration_path(resource_name), html: { method: :put }) do |f| %>
  <%= devise_error_messages! %>

  <div><%= f.label :first_name %><br />
  <%= f.text_field :first_name %></div>

  <div><%= f.label :last_name %><br />
  <%= f.text_field :last_name %></div>

  <div><%= f.label :email %><br />
  <%= f.email_field :email %></div>

  <% if devise_mapping.confirmable? && resource.pending_reconfirmation? %>
    <div>Currently waiting confirmation for: <%= resource.unconfirmed_email %></div>
  <% end %>

  <div><%= f.label :password %> <i>(leave blank if you don't want to change it)</i><br />
    <%= f.password_field :password, autocomplete: "off" %></div>

  <div><%= f.label :password_confirmation %><br />
    <%= f.password_field :password_confirmation, autocomplete: "off" %></div>

  <div><%= f.label :current_password %> <i>(we need your current password to confirm your changes)</i><br />
    <%= f.password_field :current_password, autocomplete: "off" %></div>

  <div><%= f.submit "Update" %></div>
<% end %>

UPDATE

经过一些广泛的研究后，我能够找到一个question，它隐藏了输入字段（问题中倒数第二个评论）。唯一的问题是，由于某种原因，它会触发密码验证错误，尽管它不存在...

   <div>
    <%= f.label :first_name %><br />
    <%= f.text_field :first_name %>
  </div>

  <div>
    <%= f.label :last_name %><br />
    <%= f.text_field :last_name %>
  </div>

  <% if user_signed_in? && !current_user.provider == 'facebook' %>
    <div>
      <%= f.label :email %><br />
      <%= f.email_field :email %>
    </div>

    <% if devise_mapping.confirmable? && resource.pending_reconfirmation? %>
      <div>Currently waiting confirmation for: <%= resource.unconfirmed_email %></div>
    <% end %>

    <div>
      <%= f.label :password %><br />
      <%= f.password_field :password %>
    </div>

    <div>
      <%= f.label :password_confirmation %><br />
      <%= f.password_field :password_confirmation %>
    </div>

    <div>
      <%= f.label :current_password %> <i>(we need your current password to confirm your changes)</i><br />
      <%= f.password_field :current_password %>
    </div>

Answer 1

在搜索完网站后，我终于找到了如何使用它。

我的第一个业务是使用这个devise wiki的注册控制器的第一个代码示例

  def update
    # For Rails 4
    account_update_params = devise_parameter_sanitizer.sanitize(:account_update)
    # For Rails 3
    # account_update_params = params[:user]

    # required for settings form to submit when password is left blank
    if account_update_params[:password].blank?
      account_update_params.delete("password")
      account_update_params.delete("password_confirmation")
    end

    @user = User.find(current_user.id)
    if @user.update_attributes(account_update_params)
      set_flash_message :notice, :updated
      # Sign in the user bypassing validation in case their password changed
      sign_in @user, :bypass => true
      redirect_to after_update_path_for(@user)
    else
      render "edit"
    end
  end

接下来是添加一个方法来覆盖上面代码上方用户当前密码的验证。特别感谢Lauri Laine在这篇文章中的回答：Editing Users With Devise and Omniauth

  # Overwrite update_resource to let users to update their user without giving their password
  def update_resource(resource, params)
    if current_user.provider == "facebook"
      params.delete("current_password")
      resource.update_without_password(params)
    else
      resource.update_with_password(params)
    end
  end

最后，我不得不将:current_password作为虚拟属性添加到我的用户模型中，一切正常！

attr_accessor :current_password

希望这有助于任何有/将遇到此问题的人。我知道这让我感到困惑了一分钟，但很高兴我能够把它弄清楚。将很快与omniauth的twitter gem一起测试。

Answer 2

这是一种可能的不同方法。

从这个页面：https://github.com/plataformatec/devise/tree/master/app/views/devise我已经将共享和会话文件夹复制到

应用程序/视图/设计/

之后，我能够编辑视图并隐藏我想要的任何内容。