ruby-on-rails - rails 更新方法不起作用

Question

我正在尝试更新 b 对象。每当我运行更新方法时，它都会更新 b 对象，但不会影响数据库。我试图找到解决方案，但我无法找到它的解决方案。请告诉我我做错了什么，如果看到这个问题的任何人能够找到解决方案，请将该解决方案推荐给我。

    data = params[:d]
    #data1 = params[:d1]
    data2 = data1
    request_bookmarked = Request.getRequest(data)
    bookmarked_against_Request = Request.first
    request_bookmarked_2 = request_bookmarked
    bookmarked_against_Request_2 = bookmarked_against_Request
    b = Bookmark.where(request_id: bookmarked_against_Request[:_id]).first()

    if b !=  nil
      flag = false
      ind = 0;
      b[:corsponding_requests].each.with_index do |t , index|
        if t == request_bookmarked[:id]
          flag = true
          ind = index
        end
      end
      if flag ==  true 
    b1 = b
    #b1.delete_at(ind)#request_bookmarked[:_id])
    b1[:corsponding_requests].delete(request_bookmarked[:id])
    bookmarked_against_Request_2[:favourites].delete(request_bookmarked[:_d])
    request_bookmarked[:favourites_of].delete(bookmarked_against_Request[:_id])

    b2 = Hash.new
    b2['corsponding_requests'] = Array.new
    b2['corsponding_requests'].push(*b1[:corsponding_requests])
    #b.update(Hash['corsponding_requests' , b1[:corsponding_requests]])
    if b.update_attributes(b2)
      flash[:notice] = "Request has been un bookmarked ."
    end

Bookmark.rb(书签模型类)

class Bookmark
  include Mongoid::Document
  include Mongoid::Timestamps
  field :owner_req, type: String
  field :request_id, type: String
  field :corsponding_requests, type: Array

class << self
    def createBookmark ( title)
          bookmark = self.new(title);
          if bookmark.save
            bookmark
          end
    end


  end

end

Answer 1

如果对象以任何方式无效，则 Update 方法将失败。请参阅:http://apidock.com/rails/v4.1.8/ActiveRecord/Persistence/update

您是否尝试过检查是否存在任何阻止保存发生的错误？尝试通过放置或在更新发生之前粘贴 binding.pry 来检查 b.errors。