Question

我有以下型号

class Owner < ActiveRecord::Base
  has_many :business_owners
  has_many :businesses, :through => :business_owner
end

class Business < Active Record::Base
  has_many :business_owners
  has_many :businesses, :through => :business_owner
end

class BusinessOwner < ActiveRecord::Base
  belongs_to :owners
  belongs_to :businesses
end

我尝试将BusinessOwner模型添加到管理信息中心：

rails generate active_admin:resource BusinessOwner

在app / admin /中创建一个名为business_owners的文件当我尝试查看业主时，我收到以下错误：

uninitialized constant BusinessOwner::Owners
Extracted source (around line #1):

1: render renderer_for(:index)

有人可以告诉我如何使用多个关系的主动管理员吗？

Answer 1

你的人际关系看起来不对。

在belongs_to关系上，Rails希望您使用单数形式

class BusinessOwner < ActiveRecord::Base
  belongs_to :owner
  belongs_to :business
end

同样，您需要正确引用:through

  has_many :businesses, :through => :business_owners

（即复数所有者）

在考虑ActiveAdmin之前，通常需要启动Rails控制台（或写作测试，呵呵）来测试这些东西;）

Answer 2

在商务表中纠正做这样的关联：

class Business < Active Record::Base
  has_many :business_owners
  has_many :oweners, :through => :business_owner
end

Rails Active Admin多对多关系

2 个答案: