class Group < ActiveRecord::Base
  has_many :projects
  has_many :personal_blogs
end

class Project < ActiveRecord::Base
  has_many :events, :as => :event_producer
end

class PersonalBlog < ActiveRecord::Base
  has_many :events, :as => :event_producer
end

class Event < ActiveRecord::Base
  belongs_to :event_producer, :polymorphic => true
end

class Group < ActiveRecord::Base
  has_many :projects
  has_many :personal_blogs

  def events
    Event.find(:all, :conditions => ['(type = ? AND event_producer_id IN (?)) OR (type = ? AND event_producer IN (?))', 'project', project_ids, 'personal_blog', personal_blog_ids])
  end
end

class Group < ActiveRecord::Base
  has_many :projects
  has_many :personal_blogs

  def all_events
    projects.events + personal_blogs.events
  end
end