如何 db:seed 模型及其所有嵌套模型? [英] How to db:seed a model and all its nested models?

问题描述

我有这些课程:

class User
  has_one :user_profile
  accepts_nested_attributes_for :user_profile
  attr_accessible :email, :password, :password_confirmation, :user_profile_attributes
end

class UserProfile
  has_one :contact, :as => :contactable
  belongs_to :user
  accepts_nested_attributes_for :contact
  attr_accessible :first_name,:last_name, :contact_attributes
end

class Contact
   belongs_to :contactable, :polymorphic => true 
   attr_accessible :street, :city, :province, :postal_code, :country, :phone
end

我正在尝试将一条记录插入到所有 3 个表中，如下所示:

I'm trying to insert a record into all 3 tables like this:

consumer = User.create!(
  [{
  :email => '[e-mail]',
  :password => 'aaaaaa',
  :password_confirmation => 'aaaaaa',
  :user_profile => {
      :first_name => 'Gina',
      :last_name => 'Davis',
      :contact => {
        :street => '221 Baker St',
        :city => 'London',
        :province => 'HK',
        :postal_code => '76252',
        :country => 'UK',
        :phone => '2346752245'
    }
  }
}])

一条记录被插入到 users 表中，但不会插入到 user_profiles 或 contacts 表中.也没有出现错误.

A record gets inserted into users table, but not into the user_profiles or contacts tables. No error occurs either.

做这种事情的正确方法是什么?

What's the right way to do such a thing?

已解决(感谢@Austin L. 提供链接)

SOLVED (thanks @Austin L. for the link)

params =  { :user =>
    {
    :email => '[e-mail]',
    :password => 'aaaaaa',
    :password_confirmation => 'aaaaaa',
    :user_profile_attributes => {
        :first_name => 'Gina',
        :last_name => 'Davis',
        :contact_attributes => {
            :street => '221 Baker St',
            :city => 'London',
            :province => 'HK',
            :postal_code => '76252',
            :country => 'UK',
            :phone => '2346752245'
          }
      }
  }
}
User.create!(params[:user])

推荐答案

您的用户模型需要设置为通过 accepts_nested_attributes

Your user model needs to be setup to accept nested attributes via accepts_nested_attributes

有关更多信息和示例，请参阅 Rails 文档:http://api.rubyonrails.org/classes/ActiveRecord/NestedAttributes/ClassMethods.html

See the Rails documentation for more info and examples: http://api.rubyonrails.org/classes/ActiveRecord/NestedAttributes/ClassMethods.html

你也可以考虑使用 has_one :contact, :through =>:user_profile 这将允许您像这样访问联系人:@contact = User.first.contact.

Also you might want to consider using has_one :contact, :through => :user_profile which would allow you to access the contact like this: @contact = User.first.contact.

Edit 2: 在 rails c 中玩完之后，我能找到的最佳解决方案是:

Edit 2: After playing around in rails c the best solution I can find is this:

@c = Contact.new(#all of the information)
@up = UserProfile.new(#all of the information, :contact => @c)
User.create(#all of the info, :user_profile => @up)

编辑 3:查看问题以获得更好的解决方案.

Edit 3: See the question for a better solution.

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