vsavkin

//Syntax Sugar-------------------------------------------
Object.metaClass.addRole = {role->
    delegate.metaClass.mixin role
}

//Model classes and the database-------------------------
class User {
	int id
	String name
	int age

vsavkin

AssertionFailed := Exception clone



// --------------------------------------------------------------------------
SpecDefinition := Object clone

SpecDefinition new := method(name,
  r := SpecDefinition clone
  r name := name

vsavkin

require 'bunny'

# connecting to a broker
b = Bunny.new({}, {:spec => "09"})
b.start

# setup
e = b.exchange("exchange-01")
q = b.queue("queue-01")
q.bind e

vsavkin

require 'bunny'

# connecting to a broker
b = Bunny.new({}, {:spec => "09"})
b.start

# setup
e = b.exchange("exchange-02", :durable => true)
q = b.queue("queue-02")
q.bind e

vsavkin

require 'bunny'

# connecting to a broker
b = Bunny.new({}, {:spec => "09"})
b.start

# setup
e = b.exchange("exchange-03")
q = b.queue("queue-03")
q.bind e

vsavkin

require 'bunny'

b = Bunny.new({}, {:spec => "09"})
b.start

# setup
e = b.exchange("exchange-04")

q1 = b.queue("queue-04-01")
q1.bind e

vsavkin

def update
  p = Person.find(params[:id])
  if p.update_bank_information params[:bank_information]
    render :json => p.as_json
  else
    render :json => "some kind of error"
  end
end

vsavkin

module PersonJsonSerializer
  def self.as_json person
    if person.errors.present?
      person.as_json(:root => "root-attrs")
    else
      {:errors => person.errors.full_messages}
    end
  end
end

vsavkin

def update
  p = Person.find(params[:id])
  p.update_bank_information params[:bank_information]
  render :json => PersonJsonSerializer.as_json(p)
end

vsavkin

def sell_book
  @book = Book.find(params[:id])
  if book.sold?
    book.errors.add :base, "The book is already sold"
  else
    book.sell
  end
end