使用外键创建Rails种子数据

Question

我正在寻找遵循指示的外键约束的种子数据。

我收到消息“未定义的方法'创建'为nil：NilClass”

我的命令：

rails g model user login:string password:string
rails g model account gender:string age:integer first_name:string last_name:string user:references

seeds.rb

User.delete_all
Account.delete_all

尝试1种子关联表

@Jared = User.create [{login: "Jared", password: "password2"}]
@Jared.first.account.create([{gender: "male", age: 99, first_name: "Irish", last_name: "Coder"}])

尝试2种子关联表

acct = Account.create [{gender: "male", age: 99, first_name: "Irish", last_name: "Coder"}]
@Jared.account = acct

user.rb

class User < ActiveRecord::Base
  has_one :account
end

account.rb

class Account < ActiveRecord::Base
  belongs_to :user
end

---

Answer 1

@Jared = User.create [{login: "Jared", password: "password2"}]
@Jared.first.account.create([{gender: "male", age: 99, first_name: "Irish", last_name: "Coder"}])

此部分为零

@Jared.first

尝试：

defaults = User.create(login: "Jared", password: "password2")
User.create{login: defaults.login, password: defaults.password, gender: "male", age: 99, first_name: "Irish", last_name: "Coder"}