personal implementation of tog public continium method

gistfile1.rb

def public_continuum(size = 40)
    puts '***************************************************************'        
     
    if current_user.profile.friends != nil
    friends = current_user.profile.friends.collect{|a| a.user_id}  
    Activity.find(:all, :conditions => {:action => ['membership', 'group'], :user_id => friends}, :limit=> size, 
      :order => " created_at DESC").collect{|a|
        content_tag :span, :class => "clearfix" + cycle(nil, " pair") do 
          profile = content_tag :div, :class => "image" do 
            link_to icon_for_profile(a.user.profile, 'tiny'), profile_path(a.user.profile)
          end
          if a.action == 'membership'
            puts '*************************************************************** dentro if'        
            membership = Membership.find_by_id(a.item_id)
            text = content_tag :div, :class => "text" do 
              " #{link_to(a.user.profile.full_name, profile_path(a.user.profile))} " +
              " se ha unido a la comunidad: #{link_to(membership.group.name, group_path(membership.group))}"
            end            
          elsif a.action == 'group'
            group = Group.find_by_id(a.item_id)
            text = content_tag :div, :class => "text" do 
              " #{link_to(a.user.profile.full_name, profile_path(a.user.profile))} " +
              " ha creado la comunidad: #{link_to(group.name, group_path(group))}"
            end
          end
        profile + text        
      end
    }