Acts as owner is a plugin for Ruby on Rails that provides to an owner object the ability to self-query about the possession of an ownable object.
Ownable objects can be any objects belonging to the owner object and any objects belonging to an ownable object.
Any ownable child, which belongs to an owned ownable parent, is also owned by the owner.
General library that does only one thing, without any feature.
Include the gem in your Gemfile:
gem 'acts_as_owner'
And run the bundle command. Or as a plugin:
rails plugin install git://github.com/cyril/acts_as_owner.git
Owner models just have to be declared thanks to acts_as_owner, with each
ownable object passed through a block (using owns_one or owns_many method).
class User < ActiveRecord::Base
acts_as_owner do |u|
u.owns_many :articles
u.owns_many :comments
end
with_options(dependent: :destroy) do |opts|
opts.has_many :articles
opts.has_many :comments
end
end
class Article < ActiveRecord::Base
belongs_to :user
has_many :comments, dependent: :destroy
end
class Comment < ActiveRecord::Base
belongs_to :article
belongs_to :user
end
# An article should be ownable by a user, so:
User.could_own_an?(:article) # => true
# Considering this one:
article = current_user.articles.first
# We can see that:
current_user.owns? article # => true
# Now, considering its first comment:
comment = article.comments.first
# Just like article, we can check that:
User.could_own_an? :comment # => true
# Let's see if the current user is the author:
current_user == comment.user # => false
# Never mind. It belongs to his article so that's also his one:
current_user.owns? comment # => trueCopyright (c) 2009-2011 Cyril Wack, released under the MIT license