Release v0.0.7

.gitignore

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+/.bundle/
+/.yardoc
+/Gemfile.lock
+/_yardoc/
+/coverage/
+/doc/
+/gemfiles/*.lock
+/pkg/
+/spec/reports/
+/tmp/
+*.bundle
+*.so
+*.o
+*.a
+mkmf.log

.rspec

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+--color
+--require spec_helper

.ruby-gemset

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+follow_system

.ruby-version

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+ruby-2.2.1

.travis.yml

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+language:
+  - ruby
+
+rvm:
+  - 2.0.0
+  - 2.1.3
+  - 2.2.1
+
+gemfile:
+  - gemfiles/rails4.1.gemfile
+  - gemfiles/rails4.2.gemfile
+
+install:
+  - "gem install bundler"
+  - "travis_retry bundle install"
+
+before_script:
+
+script:
+  - "bundle exec rake"
+
+branches:
+  only:
+    - master

Appraisals

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+appraise "rails4.1" do
+  gem "rails", "4.1.13"
+end
+
+appraise "rails4.2" do
+  gem "rails", "4.2.4"
+end

Gemfile

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+source 'https://rubygems.org'
+
+# Specify your gem's dependencies in follow_system.gemspec
+gemspec

LICENSE.txt

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+Copyright (c) 2014 Pablo Martin Viva
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# FollowSystem
+
+[![Build Status](https://travis-ci.org/pmviva/follow_system.png?branch=master)](https://travis-ci.org/pmviva/follow_system)
+[![Gem Version](https://badge.fury.io/rb/follow_system.svg)](http://badge.fury.io/rb/follow_system)
+
+An active record follow system developed using ruby on rails 4.1 applying domain driven design and test driven development principles.
+
+This gem is heavily influenced by cmer/socialization.
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+```ruby
+gem 'follow_system'
+```
+
+And then execute:
+
+```ruby
+$ bundle
+```
+
+Or install it yourself as:
+
+```ruby
+$ gem install follow_system
+```
+
+## Usage
+
+### Run the generator
+
+```ruby
+$ 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
+```ruby
+class Celebrity < ActiveRecord::Base
+  act_as_followee
+
+  validates :name, { presence: true, uniqueness: true }
+end
+```
+
+### User object
+```ruby
+class User < ActiveRecord::Base
+  act_as_follower
+
+  validates :username, { presence: true, uniqueness: true }
+end
+```
+
+### Followee object methods
+```ruby
+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
+```ruby
+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](http://rubydoc.info/gems/follow_system).
+
+## 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
+

Rakefile

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+require "bundler/gem_tasks"
+
+task :default => [:spec]
+desc 'run Rspec specs'
+task :spec do
+  sh 'rspec spec'
+end
+

follow_system.gemspec

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+# coding: utf-8
+lib = File.expand_path('../lib', __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require 'follow_system/version'
+
+Gem::Specification.new do |spec|
+  spec.name          = "follow_system"
+  spec.version       = FollowSystem::VERSION
+  spec.authors       = ["Pablo Martin Viva"]
+  spec.email         = ["pmviva@gmail.com"]
+  spec.summary       = %q{An active record follow system.}
+  spec.description   = %q{An active record follow system developed using ruby on rails 4.1 applying domain driven design and test driven development principles.}
+  spec.homepage      = "http://github.com/pmviva/follow_system"
+  spec.license       = "MIT"
+
+  spec.files         = `git ls-files -z`.split("\x0")
+  spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
+  spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
+  spec.require_paths = ["lib"]
+  spec.required_ruby_version = Gem::Requirement.new(">= 2.0.0")
+
+  spec.add_dependency "rails", [ ">= 4.1", "< 5" ]
+
+  spec.add_development_dependency "appraisal", "~> 2.1"
+  spec.add_development_dependency "bundler", "~> 1.10"
+  spec.add_development_dependency "rake", "~> 10.4"
+  spec.add_development_dependency "rspec", "~> 3.3"
+  spec.add_development_dependency "shoulda-matchers", "~> 2.8"
+  spec.add_development_dependency "sqlite3", "~> 1.3"
+end
+

gemfiles/rails4.1.gemfile

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+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "rails", "4.1.13"
+
+gemspec :path => "../"

gemfiles/rails4.2.gemfile

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+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "rails", "4.2.4"
+
+gemspec :path => "../"

lib/follow_system.rb

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+require 'follow_system/follow'
+require 'follow_system/followee'
+require 'follow_system/follower'
+
+###
+# FollowSystem module
+#
+# This module defines common behavior in follow system
+###
+module FollowSystem
+  ###
+  # Specifies if self can be followed by {Follower} objects
+  #
+  # @return [Boolean]
+  ###
+  def is_followee?
+    false
+  end
+
+  ###
+  # Specifies if self can follow {Followee} objects
+  #
+  # @return [Boolean]
+  ###
+  def is_follower?
+    false
+  end
+
+  ###
+  # Instructs self to act as followee
+  ###
+  def act_as_followee
+    include Followee
+  end
+
+  ###
+  # Instructs self to act as follower
+  ###
+  def act_as_follower
+    include Follower
+  end
+end
+
+ActiveRecord::Base.extend FollowSystem
+