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所以我有一个User用 生成的模型devise，我正在使用Wickedgem 为我提供多格式选项，以从用户那里获取更多数据并将其存储在用户模型中。

一切正常，但我知道我正在尝试添加另一个用户拥有多个学位的模型。我正在使用茧宝石允许我添加额外的degrees。我可以进入多表单页面并输入学位信息，甚至可以向用户添加更多学位，但是当我提交表单时出现错误；

param is missing or the value is empty: user

其他所有内容实际上都被保存了，我可以查看用户和输入的其他字段，但不是学位。

用户模型：

has_many :degrees
accepts_nested_attributes_for :degrees, reject_if: :all_blank, allow_destroy: true

学位模型：

belongs_to :user

user_steps_controller（这是邪恶的 gem 控制器）：

class UserStepsController < ApplicationController

  include Wicked::Wizard
  steps :personal, :avatar_and_about_yourself, :social, :education

  def show
    @user = current_user
    render_wizard
  end

  def update
    @user = current_user
    @user.update_attributes(user_params)
    render_wizard @user
  end

  private

  def user_params
    params.require(:user).permit(:name, :middlename, :lastname, :avatar, :aboutMe, :twitterlink, :githublink, :stackoverflowlink, :mediumlink, :dribblerlink, degrees_attributes: [:id, :degreeName, :university, :level, :done, :_destroy])
  end

end

注册控制器（用于设计）：

class Users::RegistrationsController < Devise::RegistrationsController
# before_filter :configure_sign_up_params, only: [:create]
# before_filter :configure_account_update_params, only: [:update]

  # GET /resource/sign_up
   def new
     super
   end

  # POST /resource
   def create
     super
   end

  # PUT /resource
   def update
     super
   end

   protected

  # The path used after sign up.
   def after_sign_up_path_for(resource)
     user_steps_path
   end

  # The path used after sign up for inactive accounts.
   def after_inactive_sign_up_path_for(resource)
     user_steps_path
   end

   def sign_up_params
     params.require(:user).permit(:email, :password, :password_confirmation, :name, :middlename, :lastname, :avatar, :aboutMe, :twitterlink, :githublink, :stackoverflowlink, :mediumlink, :dribblerlink, degrees_attributes: [:id, :degreeName, :university, :level, :done, :_destroy])
   end
end

我在 user_steps_controller 中遇到错误：

ActionController::ParameterMissing in UserStepsController#update
param is missing or the value is empty: user

并且错误在这一行内：

 def user_params
    params.require(:user).permit(:name, :middlename, :lastname, :avatar, :aboutMe, :twitterlink, :githublink, :stackoverflowlink, :mediumlink, :dribblerlink, degrees_attributes: [:id, :degreeName, :university, :level, :done, :_destroy])
  end

另外，我将如何查看输入的字段，例如，如果我想查看用户名，它是：

<%= @user.name %>

但是我将如何显示每个学位？它只是一个循环吗？

<% @users.degree.each do |degree| %>

终端日志：

Started PATCH "/user_steps/education" for ::1 at 2016-02-09 11:23:29 +0000
Processing by UserStepsController#update as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"EXN7ts6xPVK8vkC7q6UcNleJJWLUtKmOw41T0qsDqXCrPJ0vIHrB/6xIfpp/o+cXKR47F+6LxUY5LjXlCobKZQ==", "commit"=>"Update User", "id"=>"education"}
  User Load (0.2ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ?  ORDER BY "users"."id" ASC LIMIT 1  [["id", 16]]
Completed 400 Bad Request in 2ms (ActiveRecord: 0.2ms)

ActionController::ParameterMissing (param is missing or the value is empty: user):
  app/controllers/user_steps_controller.rb:20:in `user_params'
  app/controllers/user_steps_controller.rb:13:in `update'
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1 回答 1

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评论太长了，我完全希望更新它。

您遇到的问题是您的表单提交不包含任何user参数：

Parameters: {"utf8"=>"✓", "authenticity_token"=>"EXN7ts6xPVK8vkC7q6UcNleJJWLUtKmOw41T0qsDqXCrPJ0vIHrB/6xIfpp/o+cXKR47F+6LxUY5LjXlCobKZQ==", "commit"=>"Update User", "id"=>"education"}

这可能是Wicked，但从您对 的虚假使用来看RegistrationsController，我想这可能与格式化等有关：

--

如果你正在更新你的current_user，你不应该调用你的registrations控制器。那是为了注册——你应该使用你的users控制器：

#config/routes.rb
resource :user_steps, path: "user", only: [:show, :update] #-> url.com/user (singular resource)

#app/controllers/user_steps_controller.rb
class UserStepsController < ApplicationController
  def show
  end

  def update
    @user = current_user.update user_params
    render_wizard @user
  end

  private

  def user_params
    params.require(:user).permit(:name, :middlename, :lastname, :avatar, :aboutMe, :twitterlink, :githublink, :stackoverflowlink, :mediumlink, :dribblerlink, degrees_attributes: [:id, :degreeName, :university, :level, :done, :_destroy])
  end
end

这只是控制器；您需要查看如何form渲染和传递。

如果您使用上述代码发送数据，您需要提取formHTML 并展示如何Wicked使用它。

您需要查找app/views/users/show.html.erb要显示的表单，而不是 /app/views/registrations

于 2016-02-09T17:30:01.423 回答