Question

我有三种型号，即发票， InvoiceDetail 和产品。 发票包含许多InvoiceDetails ， InvoiceDetails属于发票和产品

我分别为所有三个模型定义了序列化程序，但是当我拿取发票时，我无法获取产品属性。</ p>

发票型号：

 class Invoice < ApplicationRecord
  has_many :invoiceDetails, inverse_of: :invoice
  belongs_to :customer
  accepts_nested_attributes_for :invoiceDetails
end

InvoiceDetai模型

 class InvoiceDetail < ApplicationRecord
  belongs_to :invoice
  belongs_to :product
end

产品型号

class Product < ApplicationRecord
  belongs_to :company
  belongs_to :category
  belongs_to :user
end

串行器

    class InvoiceSerializer < ActiveModel::Serializer
  attributes :id, :total_amount, :balance_amount, :created_at
  belongs_to :customer
  has_many :invoiceDetails
end

class InvoiceDetailSerializer < ActiveModel::Serializer
  attributes :id, :quantity, :discount, :subtotal
  belongs_to :product
end

class ProductSerializer < ActiveModel::Serializer
  attributes :id, :name, :mrp, :sp, :cp, :stocks, :isPublished
  has_one :category
end

当我拿取发票时： JSON输出不包含产品属性。</ strong>

[ { "id": 3, "total_amount": 450, "balance_amount": 350, "created_at": "2017-06-27T17:02:20.000Z", "customer": { "id": 4, "company_id": 1, "name": "vivek", "isActive": true, "created_at": "2017-06-27T14:35:50.000Z", "updated_at": "2017-06-27T14:35:50.000Z", "mobile": 12345678, "address": "test", "pan_number": null, "tin_number": null, "party_name": "xyz" }, "invoiceDetails": [ { "id": 4, "quantity": 1, "discount": 0, "subtotal": 150 }, { "id": 5, "quantity": 1, "discount": 0, "subtotal": 300 } ] } ]

Answer 1

AMS不包括关联关联 - 它只有1级深度。有办法解决这个问题：

在您的控制器中使用include（docs）
使用this one之类的解决方法 - 我目前正在制作中成功使用

Answer 2

您可以添加以下初始化程序以启用递归关联。但是，您需要确保没有循环引用。

ActiveModelSerializers.config.default_includes = '**'

Rails Active Model Serializer - 将嵌套属性添加到第二级模型

2 个答案: