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问题描述

要前preSS,一个组可以有多个用户,并且用户可以属于多个组,我设置以下关联:

To express that a group can have multiple users, and a user can belong to multiple groups, I set the following associations:

class Group < ActiveRecord::Base
  has_many :users_groups
  has_many :users, :through => :users_groups
end

class User < ActiveRecord::Base
  has_many :users_groups
  has_many :groups, :through => :users_groups
end

class UsersGroups < ActiveRecord::Base
  belongs_to :user
  belongs_to :group
end

然而,当我键入:

However, when I type:

Group.find(1).users

我得到:

NameError: uninitialized constant Group::UsersGroup

我在做什么错了?

What am I doing wrong ?

推荐答案

类UsersGroups 类UsersGroup 。 ActiveRecord的模型是奇异 - 的表具有多个

class UsersGroups should be class UsersGroup. ActiveRecord models are singular - the tables are plural.

这篇关于扶手:为什么&QUOT;的has_many ...:通过=&GT; ...&QUOT;协会结果&QUOT; NameError:未初始化不断...&QUOT;的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

08-19 12:00