migration.rb

  def self.update_migration
    all.each do |u|
      begin
        u.partner_id = Partner.first(:conditions => {name: u.partner_name})

        Timeline.all(:conditions => {user_id: u.pretty_id}).each do |t|
          t.user_id = u.id
          u.favorite_ids = []
          t.user_ids = []
          t.save
          u.save!
        end
      rescue
        puts "failed user: #{u.name}"
      end
    end

    all.each do |u|
      begin
      u.favorites_pretty_ids.each do |id|
        t = Timeline.find(:first, :conditions => {:pretty_id => id})
        u.favorites << t
      end
      u.save!
      rescue
        puts "failed user: #{u.name} (step 2)"
      end
    end

    Source.all.each do |s|
      begin
        s.timeline_id = Timeline.first(condition: {pretty_id: s.timeline_id})
        s.save!
      rescue
        puts "failed source: #{s.id}"
      end
    end

    Media.all.each do |m|
      begin
        m.event_ids = [];
        m.source_id = Source.first(condition: {pretty_id: m.source_id})
        m.timeline_id = Timeline.first(condition: {pretty_id: m.timeline_id})
        m.save!
      rescue
        puts "failed media: #{m.id}"
      end
    end

    Event.all.each do |e|
      begin
      e.user_id = User.first(conditions: {pretty_id: e.user_id}).id
      e.timeline_id = Timeline.first(conditions: {pretty_id: e.timeline_id}).id

      if e.closed == "1"
        e.closed = true
      else
        e.closed = false
      end

      if e.private == "1"
        e.private = true
      else
        e.private = false
      end

      if e.auto_approve_comments == "1"
        e.auto_approve_comments = true
      else
        e.auto_approve_comments = false
      end

      e.invited_user_ids = []
      e.removed_user_ids = []
      e.invited_users_pretty_ids.each {|id| e.invited_users << User.first(conditions: {pretty_id: id})}
      e.removed_users_pretty_ids.each {|id| e.removed_users << User.first(conditions: {pretty_id: id})}

      e.medias_pretty_ids.each do |id|
        m = Media.first(conditions: {pretty_id: id})
        e.media_ids = []
        e.medias << m
      end

      e.save!
      rescue
        puts "failed event: #{e.name}"
      end
    end

    Comment.all.each do |c|
      begin
        c.user_id  = User.first( conditions: {pretty_id: c.user_id}).id
        c.event_id = Event.first(conditions: {pretty_id: c.event_id}).id
        c.save!
      rescue
        puts "failed comment: #{c.id}"
      end
    end

    Notification.all.each do |n|
      begin
        n.user_id  = User.first( conditions: {pretty_id: n.user_id}).id
        n.save!
      rescue
        puts "failed notification: #{n.id}"
      end
    end

    Invitation.all.each do |n|
      begin
        n.user_id  = User.first( conditions: {pretty_id: n.user_id}).id
        n.save!
      rescue
        puts "failed invitation: #{n.id}"
      end
    end
  end