大佬教程收集整理的这篇文章主要介绍了ruby-on-rails – Rails如何在保存后更新列？，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
class KonkurrancersController < ApplicationController
def rate
@konkurrancer = Konkurrancer.find(params[:id])
@container = "Konkurrancer"+@konkurrancer.id.to_s
@konkurrancer.raTing_score += params[:vind][:raTing].to_i
@konkurrancer.raTings += 1
@konkurrancer.save
respond_to do |format|
format.js
end
end
end
这是我的模特儿：
class Konkurrancer < ActiveRecord::Base
after_save :do_foobar
private
def do_foobar
raTing_score = self.raTing_score
raTings = self.raTings
raTing = (raTing_score/raTings)
self.update_attributes(:raTing => raTing)
end
end
我的导轨日志：
Started POST "/konkurrancers/rate/46" for 127.0.0.1 at 2011-04-26 23:40:56 +0200 Processing by KonkurrancersController#rate as */* Parameters: {"utf8"=>"Ô£ô","authenticity_token"=>"MACFM37hX4S6XA9vryn7gtfl21P vcaPBSiKDI8mfurg=","vind"=>{"raTing"=>"4"},"id"=>"46"} ←[1m←[36mKonkurrancer Load (1.0ms)←[0m ←[1mSELECT `konkurrancers`.* FROM `kon kurrancers`←[0m ←[1m←[35mCACHE (0.0ms)←[0m SELECT `konkurrancers`.* FROM `konkurrancers` ←[1m←[36mCACHE (0.0ms)←[0m ←[1mSELECT `konkurrancers`.* FROM `konkurrancers`← [0m ←[1m←[35mKonkurrancer Load (1.0ms)←[0m SELECT `konkurrancers`.* FROM `konkurr ancers` WHERE (`konkurrancers`.`cached_slug` = '46') LIMIT 1 ←[1m←[36mSQL (2.0ms)←[0m ←[1mSELECT sluggable_id FROM slugs WHERE ((slugs.slu ggable_type = 'Konkurrancer' AND slugs.name = '46' AND slugs.sequence = 1))←[0m ←[1m←[35mKonkurrancer Load (1.0ms)←[0m SELECT `konkurrancers`.* FROM `konkurr ancers` WHERE (`konkurrancers`.`id` = 46) LIMIT 1 ←[1m←[36mSQL (0.0ms)←[0m ←[1mBEGIN←[0m ←[1m←[35mLink Load (1.0ms)←[0m SELECT `links`.* FROM `links` WHERE (`links`.k onkurrancer_id = 46) LIMIT 1 ←[1m←[36mSQL (0.0ms)←[0m ←[1mROLLBACK←[0m Rendered konkurrancers/_raTing.html.erb (1.0ms) Rendered konkurrancers/rate.js.erb (22.0ms) Completed 200 OK in 606ms (Views: 286.0ms | ActiveRecord: 6.0ms)
我应该如何创建这个？
例如：
class Konkurrancer < ActiveRecord::Base
after_save :do_foobar
private
def do_foobar
raTing_score = self.raTing_score
raTings = self.raTings
raTing = (raTing_score/raTings)
self.update_attributes(:raTings => raTing)
end
end
[编辑]您应该使用自己,因为您正在编辑的模型是模型本身.测试它,并应用必要的逻辑/实现.
看看这个guide了解更多信息.
希望有帮助！
以上是大佬教程为你收集整理的ruby-on-rails – Rails如何在保存后更新列？全部内容，希望文章能够帮你解决ruby-on-rails – Rails如何在保存后更新列？所遇到的程序开发问题。
如果觉得大佬教程网站内容还不错，欢迎将大佬教程推荐给程序员好友。
本图文内容来源于网友网络收集整理提供，作为学习参考使用，版权属于原作者。
如您有任何意见或建议可联系处理。小编QQ：384754419，请注明来意。