播种数据库 rails belongs_to

Question

我正在尝试为一个包含 4 个用户的数据库播种。每个用户都有 has_one 个人资料和 has_many todo_lists。用户模型：

class User < ActiveRecord::Base
  has_one :profile, dependent: :destroy
  has_many :todo_lists, dependent: :destroy 
  has_many :todo_items, through: :todo_lists, source: :todo_items
end

这是我的种子文件

User.destroy_all

user_list = [
  ["Carly", "Fiorina", "female", 1954],
  ["Donald", "Trump", "male", 1946],
  ["Ben", "Carson", "male", 1951],
  ["Hillary", "Clinton", "female", 1947]
]

user_list.each do |fname, lname, gender, byear|
    {
        User.create!(username: lname, password_digest: "xyz")
        User.profile.create! (first_name: fname, last_name: lname, gender: gender, birth_year: byear )
        User.todo_list.create!(list_name: "temp", list_due_date: 1.year.from_now); 
    }
end

我收到意外的错误 tLABEL 指向用户名：lname。我创建用户 table 的迁移是：

class CreateUsers < ActiveRecord::Migration
  def change
    create_table :users do |t|
      t.string :username
      t.string :password_digest

      t.timestamps null: false
    end
  end
end

Answer 1

您不应在 do-end 块中使用方括号。试试这个：

user_list.each do |fname, lname, gender, byear|
  user = User.create!(username: lname, password_digest: "xyz")
  user.create_profile!(first_name: fname, last_name: lname, gender: gender, birth_year: byear )
  user.todo_lists.create!(list_name: "temp", list_due_date: 1.year.from_now); 
end

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