Question

I have 3 models right now, Group, User and Asset.

How should I model it such that

1. User belongs to Group, Group has many users
2. Asset belongs to Group, Group has many asset
3. Every User in the Group have access to the asset, for example @user.assets will fetch assets’ info

Thanks.

Answer 1

There’s no need for anything fancy. Basic rails associations between the models will take care of everything.

To have a user access the group’s assets, I’d recommend using delegate.

For more info on delegate check the Rails Guide: Active Support Core Extensions

class Group < ActiveRecord::Base
  has_many :users
  has_many :assets 
end

class Asset < ActiveRecord::Base
  belongs_to :group
end

class User < ActiveRecord::Base
  belongs_to :group
  delegate :assets, :to => :group
end

Using delegate allows you to access assets using @user.assets as you asked.