Activist

Activity stream in rails 3.0 applications

Based on http://activitystrea.ms/spec/1.0/atom-activity-01.html

Requirements

• Redis

Installation

Just run the following command :

gem install activist

Then in your Gemfile add the following line :

gem 'activist'

And run

bundle install

Usage

First generate a status model :

rails generate activist:install

This command creates a new model called ActivistStatus in 'app/models' :

class ActivistStatus < ActiveRecord::Base
  serialize :data, Hash
end

It also creates a new migration for the ActivistStatus model so don't forget to migrate your database :

rake db:migrate

Then add activist in your user model :

class User < ActiveRecord::Base
  include Activist::Actor

  stream :public do
    all
  end

  stream :private do
    [user]
  end
end

And finally create some activities :

class Post < ActiveRecord::Base
  include Activist::Action

  belongs_to :user

  activities :public, :on => :after_create
  activities :private, :actor => :user, :action => :posted, :on => :after_create
  activities :public, :on => :after_update, :data => proc { |post| post.changes }

  after_destroy
    activity :private, :action => :deleted
  end

  def promote
    self.title = "[PROMOTED] #{self.title}"
    activity :private, :action => :promoted, :data => proc { |post| { :title => post.title } }
  end
end