ruby-on-rails - 在rails 4中设计用户模型中保存自定义字段

Question

我设计了一个用户模型并向其添加了额外的字段。当我创建和帐户时，一切正常，只有电子邮件、pw 和 pw conf。

然后我想让用户进入编辑页面并填写可选的附加字段。但是，当他们提交时，所有内容都保存为 nil。

 class RegistrationsController < Devise::RegistrationsController

   before_action :configure_permitted_parameters, if: :devise_controller?

   def configure_permitted_parameters
     devise_parameter_sanitizer.for(:sign_in){ |u| u.permit(:email, :password) }
     devise_parameter_sanitizer.for(:sign_up){ |u| u.permit(:name, :username, :about,  :email, :password, :password_confirmation)}
     devise_parameter_sanitizer.for(:account_update){ |u| u.permit(:name, :username, :about, :email, :password, :password_confirmation) }
   end

   def update
     self.resource = resource_class.to_adapter.get!(send(:"current_#{resource_name}").to_key)
     if resource.update_with_password(user_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

   def user_params 
     params.require(:user).permit(:email, :password, :current_password, :password_confirmation, :name, :username, :about) 
   end
 end

我在控制台中得到了这个输出，

 ActiveRecord::SchemaMigration Load (0.1ms)  SELECT "schema_migrations".* FROM "schema_migrations"
 Processing by Devise::RegistrationsController#update as HTML
 Parameters: {"utf8"=>"✓", "authenticity_token"=>"EG8FtCTBohuG2uwUvIqmY7KTsmYY1nMAXqTfc0Li+eQ=", 
 "user"=>{"email"=>"a@a.com", "name"=>"Aaron", "username"=>"", "about"=>"", 
 "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]", "current_password"=>"[FILTERED]"}, "commit"=>"Update"}

User Load (2.2ms)  SELECT "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1  [["id", 1]]
Unpermitted parameters: name, username, about

但是当我在控制台(使用 User.last)中 checkin 时，数据库中没有保存任何内容。我被卡住了，看了看，不知道出了什么问题......

Answer 1

在 Rails4 中我们有强大的参数所以请

将以下行添加到您的 application_controller.rb

before_filter :configure_devise_params, if: :devise_controller?
  def configure_devise_params
    devise_parameter_sanitizer.for(:sign_up) do |u|
      u.permit(:first_name, :last_name, :gender, :email, :password, :password_confirmation)
    end
  end