FollowSystem

An active record follow system developed using ruby on rails applying domain driven design and test driven development principles.

For rails 4 support use branch v0.0.7-stable.

For rails 5 support use branch v0.1.1-stable.

This gem is heavily influenced by cmer/socialization.

Installation

Add this line to your application's Gemfile:

gem 'follow_system'

And then execute:

$ bundle

Or install it yourself as:

$ gem install follow_system

Usage

Run the generator

$ rails g follow_system

Let's suppose for a moment that you have a celebrity news application and a User can follow a Celebrity or several Celebrity models. The user model becomes the follower and the celebrity model becomes the followee.

Celebrity object

class Celebrity < ActiveRecord::Base
  act_as_followee

  validates :name, { presence: true, uniqueness: true }
end

User object

class User < ActiveRecord::Base
  act_as_follower

  validates :username, { presence: true, uniqueness: true }
end

Followee object methods

celebrity.is_followee? # returns true

celebrity.followed_by?(user) # returns true if user follows the celebrity object, false otherwise

celebrity.followers_by(User) # returns a scope of FollowSystem::Follow join model that belongs to the celebrity object and belongs to follower objects of type User

Follower object methods

user.is_follower? # returns true

user.follow(celebrity) # Creates an instance of FollowSystem::Follow join model associating the user object and the celebrity object, returns true if succeded, false otherwise

user.unfollow(celebrity) # Destroys an instance of FollowSystem::Follow join model that associates the user object and the celebrity object, returns true if succeded, false otherwise

user.toggle_follow(celebrity) # Follows / unfollows the celebrity

user.follows?(celebrity) # returns true if the user object follows the celebrity object, false otherwise

user.followees_by(Celebrity) # returns a scope of FollowSystem::Follow join model that belongs to the user object and belongs to followee objects of type Celebrity

For more information read the api documentation.

Contributing

1. Fork it ( https://github.com/pmviva/follow_system/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request