Question

我有一个模型Order，其地址如下：

 has_many :pick_up_addresses,
       -> { where(address_type: Address.address_types[:pick_up]) },
       as: :addressable, class_name: 'Address', dependent: :destroy


has_one :destination_address,
      -> { where(address_type: Address.address_types[:destination]) },
      as: :addressable, class_name: 'Address', dependent: :destroy

Address模型中的字段示例如下：

addressable_id: 1
addressable_type: "Order"

我定义了一个AddressResource，但我不知道我的OrderResource应该是什么样的。在这种情况下：

# OrderResource
has_many :pick_up_addresses
has_one :destination_address

不起作用。

如果我将?include=destination_address添加到订单的网址，我会得到：

undefined method `destination_address_id' for class `#<Class:0x007fe321b8cae8>'

对?include=pick_up_addresses我得到：

undefined local variable or method `object' for #<Api::V2::AddressResource:0x007fe32abc90c0>\nDid you mean?  object_id

我已经查看了用于定义关系的文档（http://jsonapi-resources.com/v0.9/guide/resources.html#Relationships），但我不确定这些选项是否定义了我需要的内容。

PS - 尝试添加polymorphic: true仍然会产生以下错误：

undefined method `type' for #<Address:0x007fe32f08d1c0> # for pick_up_address

undefined method `destination_address_id' for class `#<Class:0x007fe322db5f58>'" # for destination_address

Answer 1

想出来。对于其他需要帮助的人：

在OrderResource：

has_many :pick_up_addresses, polymorphic: true
has_one :destination_address, polymorphic: true, foreign_key: 'addressable_id'

在Address模型中：

def type
  'address'
end

JSONAPI资源：has_one / many具有多态关联

1 个答案: