Question

在创建记录时，我试图在创建父类Quote时为相关类Optionvolume设置默认值

class Optionvolume < ActiveRecord::Base
  belongs_to :option
  belongs_to :quote

class Option < ActiveRecord::Base
  has_and_belongs_to_many :tasks
class Task < ActiveRecord::Base
  has_and_belongs_to_many :options

class Quote < ActiveRecord::Base
  belongs_to :task
  has_many :optionvolumes, :dependent => :destroy
  has_many :options, through: :optionvolumes
  accepts_nested_attributes_for :optionvolumes, :allow_destroy => true    

  after_create :set_optionvolumes

  private
    def set_optionvolumes
      @options = Option.where(['options_tasks.task_id = ?', self.task_id]).joins(:tasks)
      @options.each do |option|
        self.optionvolumes.create(:quantity => '0', :option_id => option.id)
      end
    end

但是，我正在部分地生成记录。当@options生成时，对于给定的情况10结果（正确）。但是，只生成数量字段（通过上下文的quote_id rails句柄）。 option_id保持空白

Optionvolume id: 111, quote_id: 27, quantity: 0, created_at: [...]
Optionvolume id: 112, quote_id: 27, quantity: 0, created_at: [...]

等...
服务器甚至指示它应该处理数据

INSERT INTO "optionvolumes" ("option_id", "quote_id", "created_at", "quantity", "updated_at") VALUES ($1, $2, $3, $4, $5) RETURNING "id"  [["option_id", 15], ["quote_id", 38], ["created_at", Tue, 13 Aug 2013 11:20:07 UTC +00:00], ["quantity", 0], ["updated_at", Tue, 13 Aug 2013 11:20:07 UTC +00:00]]
INSERT INTO "optionvolumes" ("option_id", "quote_id", "created_at", "quantity", "updated_at") VALUES ($1, $2, $3, $4, $5) RETURNING "id"  [["option_id", 16], ["quote_id", 38], ["created_at", Tue, 13 Aug 2013 11:20:07 UTC +00:00], ["quantity", 0], ["updated_at", Tue, 13 Aug 2013 11:20:07 UTC +00:00]]

等...

Answer 1

事实证明，服务器日志根本没有显示正在保存的option_id，但应用程序正在处理它。一个

<%= ff.object.inspect %>

命令显示它在那里。 http://guides.rubyonrails.org/debugging_rails_applications.html在这方面非常有帮助。

rails3回调用于嵌套记录创建

1 个答案: