Question

我有一个包含service_provider和service模型的程序。 service_provider使用has_many归因，service模型使用belongs_to归因。 service_provider是使用设计创建的。我无法在service_provider_id方法中为服务分配create。

services_controller.rb

中的创建方法

def create
    @service = Service.new(service_params)
    @service.service_provider_id = current_service_provider.id    
    respond_to do |format|
      if @service.save
          format.html { redirect_to @service, notice: 'Service was     successfully created.' }
          format.json { render :show, status: :created, location: @service }
      else
          format.html { render :new }
          format.json { render json: @service.errors, status: :unprocessable_entity }
      end
    end
end

rails控制台为每项服务提供service_provider_id: nil。

schema.rb service_provider_id使用迁移创建了t.belongs_to :service_provider, index: true＆＃34; create_table "service_providers", force: :cascade do |t| t.string "email", default: "", null: false t.string "encrypted_password", default: "", null: false t.string "reset_password_token" t.datetime "reset_password_sent_at" t.datetime "remember_created_at" t.integer "sign_in_count", default: 0, null: false t.datetime "current_sign_in_at" t.datetime "last_sign_in_at" t.string "current_sign_in_ip" t.string "last_sign_in_ip" t.datetime "created_at", null: false t.datetime "updated_at", null: false end add_index "service_providers", ["email"], name: "index_service_providers_on_email", unique: true add_index "service_providers", ["reset_password_token"], name: "index_service_providers_on_reset_password_token", unique: true create_table "services", force: :cascade do |t| t.integer "service_provider_id" t.string "service_name" t.text "description" t.integer "price" t.string "location" t.datetime "created_at", null: false t.datetime "updated_at", null: false end add_index "services", ["service_provider_id"], name: "index_services_on_service_provider_id" ＆＃34;

service.rb

这是class Service < ActiveRecord::Base attr_accessor :service_provider_id belongs_to :service_provider validates_presence_of :description, :location, :service_name, :price end型号

class ServiceProvider < ActiveRecord::Base
  has_many :services
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
     :recoverable, :rememberable, :trackable, :validatable
end

＆＃39; service_provider.rb`

{ endDate=2015-10-19 19:00:00.0}

我尝试重启服务器并重置数据库没有运气。

Answer 1

仅从attr_accessor :service_provider_id

中删除service.rb

rake db:migrate然后rails s

正如@Petr提到的那样覆盖（称为nil的第二次）。

Rails没有分配适当的ID

1 个答案: