ruby-on-rails - 在 Ruby on Rails 中播种

Question

我有几个深度嵌套的模型，我想为我的数据库做种。模型如下: 每个餐厅有很多菜单。每个菜单都有很多类别。每个类别都有很多餐点。目前，我的种子看起来像这样:

restaurant_seed = [
  {
    name: "KFC",
    address: "Sofia",
    description: "Fast food.",
    phone_number: "88888888"
  }
]

menu_seed = [
  {
    name: 'Spring menu.',
    active: true
  },
  }
    name: 'Winter menu.',
    active: false
  }
]

category_seed = [
  {
    name: "Dessert",
    available_all_day: false,
    age_restriction: false,
    category_avatar: File.open(File.join(Rails.root, "app/assets/images/desserts.jpg"))
  },
  {
    name: "Salad",
    available_all_day: true,
    age_restriction: false,
    category_avatar: File.open(File.join(Rails.root, "app/assets/images/salads.jpeg"))
  }
]

meal_seed = [
  {
    name: "Shopska salata",
    meal_avatar: File.open(File.join(Rails.root, "app/assets/images/shopska_salad.jpg"))
  },
  {
    name: "Shisha",
    meal_avatar: File.open(File.join(Rails.root, "app/assets/images/shisha.jpg"))
  }
]

但是，我不知道如何使用该信息实际为数据库播种。这个想法是每家餐厅都会有所有的菜单种子，每家餐厅的每份菜单都会有来自类别种子的每个类别等等。感谢您的任何建议!

Answer 1

写一个方法来遍历所有种子并创建相应的记录。

def setup_restaurants(restaurant_seed, menu_seed, category_seed, meal_seed)
  restaurant_seed.each do |r_seed|
    restaurant = Restaurant.create(r_seed)
    menu_seed.each do |m_seed|
      menu = restaurant.menus.create(m_seed)
      category_seed.each do |c_seed|
        category = menu.categories.create(c_seed)
        meal_seed.each do |mm_seed|
          category.meals.create(mm_seed)
        end
      end
    end
  end
end