更新功能不影响数据库（RAILS）

Question

我正在尝试删除一个 BSON id。它从对象数组中删除元素但不影响数据库。你能告诉我我做错了什么吗？谢谢

  def delete_bookmark
    request_to_be_deleted = params[:d]
    l = request_to_be_deleted.split("'")
    request_to_be_deleted = l[1]
    request_bookmarks = params[:d1]
    l = request_bookmarks.split("'")
    request_bookmarks = l[1]
    b = Bookmark.where(request_id: request_bookmarks).first()
    b1 = b
    req = Request.find(request_to_be_deleted)
    b1[:corsponding_requests].delete(req[:_id])

    b1.update(Hash['corsponding_requests' , b1[:corsponding_requests]])
    session[:request_bookmarks] = request_bookmarks
    asd
    render :action => "bookmark"
  end

书签模型

include Mongoid::Document
  include Mongoid::Timestamps
  field :user_id, type: Mongoid
  field :request_id, type: Mongoid
  field :corsponding_requests, type: Array

  validates_presence_of :user_id , :request_id

  belongs_to :user
  belongs_to :request

Answer 1

它不会删除另一个 mongo 集合中的对象，因为 mongoid 不知道那是你想要做的 - 就它而言，你只是得到了一个数组IDs

如果你想让 mongoid 为你做那个 link 那么你需要设置一个 relation - 你所拥有的看起来像一个单边 n-n 关系

更新功能不影响数据库（RAILS）

update function not effecting te database(RAILS )

ruby

ruby-on-rails

ruby-on-rails-3.2

ruby-on-rails-4