ruby on rails中modal查询has_and_belong_to_many

ruby 查询 rails [12/21/14, 8:39:29 AM] Zengwei Shao: 问你一个问题,两个modal的关系是has_and_belong_to_many,我使用一个modal.includes(:modal1)....

我实现PUB_AREA 表的数据查询, 上面是我写的调试, 指出在下面and处报错,无布尔...ruby on rails中modal查询has_and_belong_to_many [12/21/14, 8:39:29...

ruby 编译 0 回答 同问0 | 收藏0 | 浏览337 2014.12.21 08:41来自 shaozengwei ruby on rails中modal查询has_and_belong_to_many [12/21/14, ...

Please explain the difference between has_and_belongs_to_many and has_many through relationship. When and where to use which one? ruby-on-rails share...

ruby on rails(59)作者同类文章X 版权声明:本文为博主原创文章,未经博主允许不得转载。在上一篇文章中,我们知道通过has_one和belongs_to方法定义一对一关联关系...

博客首页 > Life in Coding > ruby on rails > Rails中has_many等的原理...class_name => 'B' end class B belong_to :target, :class_name => '...

Ruby on Rails latest stable (v4.2.7) - 6 notes - Class: ActiveRecord:...has_and_belongs_to_many(name, scope = nil, options = {}, &extension)...

ruby-on-rails ruby-on-rails-3 migration has-and-belongs-to-many share|improve this question asked Jul 3 '11 at 5:50 dbslone 95211123 add a co...

Ruby on Rails has_many and polymorphism up vote 1 down vote favorite I'm new to Ruby on Rails and I'm trying to understand abstract class. Maybe...

Rails Models - Association, Creation, Learn Ruby on Rails in simple and easy steps. You will learn its Introduction, Installation, Framework, Directory ...