= Follow feature for Rails3 with Mongoid

== Installation

In Gemfile:
  gem 'mongoid_follow'

== Legend (to ease complications)

  "follower" is a model who follows
  "followee" is a model who would be followed

== To use

To make mongoid_follow usable you need to include Mongoid::Followee into your document who would be followed then you also need to include Mongoid::Follower in your follower model:

  class User
    include Mongoid::Document

    include Mongoid::Followee
    include Mongoid::Follower
  end

  class Group
    include Mongoid::Document

    include Mongoid::Followee
  end

You can then follow a model using:

  @bonnie = User.create
  @clyde = User.create

  @bonnie.follow(@clyde)
  @bonnie.unfollow(@clyde)

You can also see whether a model is a follower of another model or if a model is a followee of another model:

  @clyde.follower?(@bonnie)
  @bonnie.followee?(@clyde)

You can also be a follower of other models

  @gang = Group.create
  @bonnie.follow(@group)

  @gang.follower?(@bonnie)
  @bonnie.follows?(@gang)

=== Getting followers/followees

Get all followers/followees by

  @gang.all_followers
  @bonnie.all_followees

You can also get followers/followees by a certain model

  @gang.all_followers_by_model(User)
  @bonnie.all_followees_by_model(Gang)

=== Counting followers/followees

Get the count of followers/followees using

  @gang.followers_count
  @bonnie.followees_count

Or by a certain model by

  @gang.followers_count_by_model(User)
  @bonnie.followees_count_by_model(User)

=== Dynamic methods

You can use dynamic methods to shorten code for getting followers/followees or their count of a certain model by

  @gang.all_user_followers
  @bonnie.all_gang_followees

  @gang.user_followers_count
  @bonnie.user_followees_count

== Callbacks

You can attach callbacks to the follower/followee models before or after the follow.

  # Follower model
  def before_follow(followee)
    puts 'Notify me'
  end

  # Other follower callbacks
  after_follow
  before_unfollow
  after_unfollow


  # Followee model
  def before_followed_by(follower)
    puts 'Something here'
  end

  # Other followee callbacks
  after_followed_by
  before_unfollowed_by
  after_unfollowed_by

Note: careful with using callbacks, we have no transaction so if it breaks on your callbacks, what gets saved is saved.

* Any bug or issue, please send me an email to aeguintu@gmail.com

== For development

  gem install 'mongoid'
  gem install 'bson_ext'
  gem install 'database_cleaner'
  gem install 'rspec'

  rake spec/specs/follow_spec_rb

== TODO

* limit result of followers/followees

== Thanks

Awesome thanks to:
  to mongoid_followable
  to Tristan Peralta

== Copyright

Copyright (c) Alec Guintu. See LICENSE.txt for further details.