app.rb

require 'rubygems'
require 'bundler/setup'
require 'chassis'

class Post
  attr_accessor :id, :title, :text
end

repo = Chassis::Repo.default

puts repo.empty? Post #=> true

post = Post.new
post.title = 'Such Repos'
post.text = 'Very wow. Much design.'

repo.save post

puts post.id #=> 1

found_post = repo.find Post, post.id
found_post == post #=> true (no difference between objects in memory)

post.title = 'Such updates'
post.text = 'Very easy. Wow'

repo.save post

repo.find(Post, post.id).text #=> 'Very easy. Wow.'

class PostRepo
  extend Chassis::Repo::Delegation
end

post = PostRepo.find post.id
post.text #=> 'Very Easy. Wow'

PostRepo.all #=> [post]
# etc

PostRepo.delete post
PostRepo.empty? #=> true

error

/Projects/my/repositories-experiment > ruby app.rb
true
1
/Users/inem/.rvm/gems/ruby-2.1.0-preview2@my/bundler/gems/chassis-2504d3d17788/lib/chassis/repo/delegation.rb:74:in `backend': undefined method `instance' for Chassis::Repo:Class (NoMethodError)
	from /Users/inem/.rvm/gems/ruby-2.1.0-preview2@my/bundler/gems/chassis-2504d3d17788/lib/chassis/repo/delegation.rb:17:in `find'
	from app.rb:35:in `<main>'