Gingerbread

README.md

##Gingerbread It's like very simple ActiveRecord for Sinatra but uses cookies instead of databases

Use cookies in Sinatra like a boss!

Example:

require './gingerbread'
require 'sinatra'

class Person < Gingerbread
  attribute :name
end

get '/create/:name' do
  person = Person.new(self)
  person.name = params[:name]
  person.save

  'Created!'
end

get '/find/:id' do
  person = Person.find(self, params[:id])

  "Hi, #{person.name}"
end

get '/delete/:id' do
  person = Person.find(self, params[:id])
  person.destroy(self)

  "#{person.name} has been deleted!"
end

gingerbread.rb

class Gingerbread

  def initialize(app, attributes = {})
    @@app = app
    @attributes = attributes
  end

  def save
    if @@app.request.cookies['gingerbread']
      data = Marshal.load(@@app.request.cookies['gingerbread'])
    else
      data = {}
    end

    data[class_name] ||= {}

    @attributes[:id] = next_id(data[class_name])

    data[class_name][@attributes[:id]] = self
    @@app.response.set_cookie 'gingerbread', :value => Marshal.dump(data), :path => '/'
  end

  def destroy(app)
    data = Marshal.load(app.request.cookies['gingerbread'])
    data[class_name].delete(@attributes[:id])
    app.response.set_cookie 'gingerbread', :value => Marshal.dump(data), :path => '/'
  end

  class << self
    def attribute(name, value = nil)
      define_method(name) do
        @attributes[name]
      end

      define_method("#{name}=") do |value|
        @attributes[name] = value
      end
    end

    def find(app, id)
      id = id.to_i
      if app.request.cookies['gingerbread']
        data = Marshal.load(app.request.cookies['gingerbread'])
        data[self.to_s.downcase.to_sym] ? data[self.to_s.downcase.to_sym][id] : nil
      else
        nil
      end
    end
  end

  private
    def class_name
      self.class.to_s.downcase.to_sym
    end

    def next_id(hash)
      id = hash.map{|a, b| a}.max
      (id || 0) + 1
    end
end