Question

我有以下数据库。用户注册到站点后，将为其创建新的GalleryPhoto。他只能有一张GalleryPhoto，可以存储多张照片。

这些是模特：

class User < ActiveRecord::Base
  has_one :gallery_photos, :dependent => :delete
  has_many :photos, :through => :gallery_photos

  after_create :setup_gallery

  def setup_gallery
    GalleryPhoto.create(userId: self.id, name: self.email)
   end
end

class GalleryPhoto < ActiveRecord::Base
  belongs_to :user
  has_many :photos, :dependent => :delete_all
end

class Photo < ActiveRecord::Base
  belongs_to :gallery_photo
end

我想删除用户后：

def destroy
  User.find(params[:id]).destroy
end

我在该行收到以下错误：

NameError in UsersController#destroy
uninitialized constant User::GalleryPhotos

在用户注册后成功创建了图库，他可以向其添加图像。

感谢您的帮助！

Answer 1

修改此行

has_one :gallery_photos, :dependent => :delete
has_many :photos, :through => :gallery_photos

到

has_one :gallery_photo, :dependent => :delete
has_many :photos, :through => :gallery_photo

从数据库中删除多个连接记录时未初始化的常量错误

1 个答案: