目标

我想让user.admin使用devise_invite gem邀请用户仅去其旅馆之一。

=>用户和酒店通过Join_table UserHotel连接起来。

问题

我无法创建user_hotel Join_table和/或将特定的酒店参数添加到受邀用户。

• 控制器 >> @user.hotels => #<activeRecord::Associations::CollectionProxy []>

• 控制台：

pry(main)> User.invitation_not_accepted.last.hotels
  User Load (0.6ms)  SELECT  "users".* FROM "users" WHERE "users"."invitation_token" IS NOT NULL AND "users"."invitation_accepted_at" IS NULL ORDER BY "users"."id" DESC LIMIT $1  [["LIMIT",1]]
  Hotel Load (0.4ms)  SELECT "hotels".* FROM "hotels" INNER JOIN "user_hotels" ON "hotels"."id" = "user_hotels"."hotel_id" WHERE "user_hotels"."user_id" = $1  [["user_id",49]]
=> []

更新

问题似乎出在用户与酒店之间的多对多关系中。当我在hotel.user.new之后中断控制器的“新”操作并对其进行测试时，我会提示以下内容：

• >> @user.hotels => #<activeRecord::Associations::CollectionProxy []>
• >> @hotel.users => #<activeRecord::Associations::CollectionProxy [#<User id: 2,email: "test@hotmail.com",created_at: "2019-11-05 14:17:46",updated_at: "2019-11-05 15:04:22",role: "admin">,#<User id: nil,email: "",created_at: nil,updated_at: nil,role: "admin">]>

注意 我使用devise设置了用户，以便将我的用户控制器构建为：

• users / confirmations_controller.rb
• users / invitations_controller.rb
• users / omniauth_callbacks_controller.rb
• users / password_controller.rb
• users / registrations_controller.rb
• users / sessions_controller.rb
• users / unlocks_controller.rb

代码

路线

Rails.application.routes.draw do

  devise_for :users

  resources :hotels do
devise_for :users,:controllers => { :invitations => 'users/invitations' }
  end
end

模型

class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable,:lockable,:timeoutable,:trackable and :omniauthable
  has_many :user_hotels,dependent: :destroy
  has_many :hotels,through: :user_hotels
  accepts_nested_attributes_for :user_hotels
  enum role: [:owner,:admin,:employee]
  after_initialize :set_default_role,:if => :new_record?

  def set_default_role
    self.role ||= :admin
  end

  devise :invitable,:database_authenticatable,:registerable,:recoverable,:rememberable,:validatable,:invitable
end

class UserHotel < ApplicationRecord
  belongs_to :hotel
  belongs_to :user
end

class Hotel < ApplicationRecord
  has_many :user_hotels,dependent: :destroy
  has_many :users,through: :user_hotels
  accepts_nested_attributes_for :users,allow_destroy: true,reject_if: ->(attrs) { attrs['email'].blank? || attrs['role'].blank?}
end

观看次数/酒店/显示

<%= link_to "invite new user",new_user_hotel_invitation_path(@hotel)%>

controllers / users / invitations_controller.rb

class Users::InvitationsController < Devise::InvitationsController
  def new
    @hotel = Hotel.find(params[:hotel_id])
    @user = @hotel.users.new
  end

  def create
    @hotel = Hotel.find(params[:hotel_id])
    @user = @hotel.users.new(hotel_user_params)
    @user.invite!
  end

  private
  def hotel_user_params
    params.require(:user).permit(:email,:role,hotel_users_attributes: [:hotel_id])
  end
end

views / invitations / new.html.erb

<h2><%= t "devise.invitations.new.header" %></h2>

<%= simple_form_for(resource,as: resource_name,url: user_hotel_invitation_path(@hotel),html: { method: :post }) do |f| %>  <%= f.error_notification %>

  <% resource.class.invite_key_fields.each do |field| -%>
    <div class="form-inputs">
      <%= f.input field %>
    </div>
  <% end -%>

      <%= f.input :role,collection: [:owner,:employee] %>
  <div class="form-actions">
    <%= f.button :submit,t("devise.invitations.new.submit_button") %>
  </div>
<% end %>