在我的Rails 5.2应用程序中,我想引用另一个模型。我在应用程序中进行了以下设置:
class SomeModule::AnotherModule::User < ApplicationRecord
has_many :phones
end
class Phone < ApplicationRecord
belongs_to :user, optional: true, class_name: '::SomeModule::AnotherModule::User'
end
迁移过程如下:
add_reference :phones, :user, foreign_key: true, index: true
现在,当我尝试通过电话呼叫用户时,我得到了:
Phone.first.user
#=> NameError: uninitialized constant User::Phone
from /home/testuser/.rvm/gems/ruby-2.5.1/gems/activerecord-5.2.0/lib/active_record/inheritance.rb:196:in `compute_type'
删除class_name:
属性不会更改任何内容。
我在做什么错了?
答案 0 :(得分:2)
class SomeModule::AnotherModule::User < ApplicationRecord
has_many :phones, class_name: 'Phone', foreign_key: 'user_id'
end
class Phone < ApplicationRecord
belongs_to :user, optional: true, class_name: 'SomeModule::AnotherModule::User', foreign_key: 'user_id'
end