API：通過其他相關模型更新模型

Question

我正在嘗試通過CreditNote更新LineItem。 它用於API，因此我嘗試通過JSON進行更新。

我的關系模型是：

class TestCreditNote < ActiveRecord::Base
  self.table_name = :credit_notes
  has_many :line_items, :class_name => TestLineItem, :foreign_key => :artef_id
  accepts_nested_attributes_for :line_items
end

class TestLineItem < ActiveRecord::Base
  self.table_name = :line_items
  attr_accessible :description
  belongs_to  :credit_note, :class_name => TestCreditNote, :foreign_key => :artef_id
end

執行此測試時：

  it "should update the sales line item record" do
    put "api/v1/credit_notes/#{@credit_note.id}", { :test_credit_note => { :line_items => [{ :description => 'PEPITO'}]  }}, http_headers
    data = JSON.parse(response.body, :symbolize_names => true)
    TestCreditNote.find(@sales_credit_note.id).line_item.description.should == 'PEPITO'
  end

由於以下原因而失敗：ActiveModel :: MassAssignmentSecurity :: Error：無法批量分配受保護的屬性：line_items

Answer 1

我添加了attr_accesible：line_items_attributes

  class TestCreditNote < ActiveRecord::Base
    self.table_name = :credit_notes
    has_many :line_items, :class_name => TestLineItem, :foreign_key => :artef_id
    accepts_nested_attributes_for :line_items
    attr_accessible :line_items_attributes
  end

和測試中一樣

it "should update the sales line item record" do
  put "api/v1/credit_notes/#{@credit_note.id}", { :test_credit_note => { :line_items_attributes => [{:id => 1, :description => 'PEPITO'}]  }}, http_headers
  data = JSON.parse(response.body, :symbolize_names => true)
  TestCreditNote.find(@sales_credit_note.id).line_item.description.should == 'PEPITO'
end