A sample implementation of using Fleakr w/ ActiveRecord

photo.rb

class Photo < ActiveRecord::Base
  
  belongs_to :user
  
  def self.flickr_mapping
    {
      :flickr_id   => :id,
      :description => :description,
      :title       => :title,
      :url         => 'small.url'
    }
  end
  
  def self.from_flickr(flickr_photo)
    photo = self.find_by_flickr_id(flickr_photo.id)
    if photo.nil?
      photo = self.new
      flickr_mapping.each do |attribute, flickr_attribute|
        photo.send("#{attribute}=".to_sym, eval("flickr_photo.#{flickr_attribute}"))
      end
    end
    photo
  end
  
end

photo_set.rb

require 'forwardable'
class PhotoSet < ActiveRecord::Base
  extend Forwardable
  def_delegator :flickr, :photos, :flickr_photos
  
  belongs_to :user
  has_many :photos, :foreign_key => :set_id

  def self.flickr_mapping
    {
      :flickr_id   => :id,
      :description => :description,
      :title       => :title
    }
  end

  def save_photos
    flickr_photos.each do |flickr_photo|
      photo = self.photos.from_flickr flickr_photo
      photo.save!
    end
  end

  def self.from_flickr(flickr_set)
    set = PhotoSet.find_by_flickr_id(flickr_set.id)
    if set.nil?
      set = self.new
      flickr_mapping.each do |attribute, flickr_attribute|
        set.send("#{attribute}=".to_sym, eval("flickr_set.#{flickr_attribute}"))
      end
    end
    set
  end

  def flickr
    @flickr ||= begin
      set = Fleakr::Objects::Set.new
      set.id = self.flickr_id
      set
    end
  end
  private :flickr
  
end

user.rb

require 'forwardable'
class User < ActiveRecord::Base
  extend Forwardable
  
  def_delegator :flickr, :photos, :flickr_photos
  def_delegator :flickr, :sets, :flickr_sets

  has_many :photos
  has_many :sets, :class_name => 'PhotoSet'
  
  def save_photos
    flickr_photos.each do |flickr_photo|
      photo = self.photos.from_flickr flickr_photo
      photo.save!
    end
  end
  
  def flickr
    @flickr ||= Fleakr.user(self.flickr_username)
  end
  private :flickr
  
end