Question

我有一个行业表，并且正在跟踪也是行业的竞争对手。这是通过具有Industry_id和competitor_id的映射表industry_competitors进行的。我想让papertrail跟踪行业竞争对手的协会和协会。

class Industry < ApplicationRecord
  has_many :industry_competitors, dependent: :destroy
  has_many :competitors, through: :industry_competitors
end


class IndustryCompetitor < ApplicationRecord
  has_paper_trail
  belongs_to :industry
  belongs_to :competitor, class_name: "Industry"
end

我的控制器代码就是这样。

  competitors = ::Industry.where(id: params[:competitor_ids])
  @industry.competitors = competitors
  @industry.save

每次都通过整个竞争对手列表。如果我试图从行业中取消一些竞争对手（通过不将ID传递给控制器），则会触发“删除”查询。

  DELETE FROM `industry_competitors` WHERE `industry_competitors`.`industry_id` = 4559 AND `industry_competitors`.`competitor_id` = 4564

我怀疑是因为activerecord调用'delete'而不是'destroy'，所以不会触发该纸张提示回调，因此不会跟踪更改。如果有调用的方法，则显式删除（只需最少的代码更改）。还是papertrail有办法跟踪删除？

Answer 1

添加此补丁可以使其正常工作。

module HasManyThroughAssociationPatch
  def delete_records(records, method)
    method ||= :destroy
    super
  end
end

ActiveRecord::Associations::HasManyThroughAssociation.prepend(HasManyThroughAssociationPatch)

积分：https://github.com/westonganger/paper_trail-association_tracking

Papertrail轨道可以创建但不能通过关联删除

1 个答案: