sevos

class Department < ActiveRecord::Base
  has_one :stock
end

class Stock < ActiveRecord::Base
  belongs_to :department

  def update
    update_attribute :value, Legacy::Department.find(department.id).stock_value
  end

sevos

class ApplicationHelper
  def present(object, klass = "#{object.class}Presenter".constantize)
    presenter = klass.new(object, self)
    yield presenter if block_given?
    presenter
  end
end

sevos

class BasePresenter
  def initialize(object, template)
    @object = object
    @template = template
  end
private

  def self.inherited(klass)
    name = klass.name.match(/(\w+)Presenter/).captures.first.underscore
    klass.instance_eval do

sevos

MVC is not enough for backend apps. It's time for car (t)rap!

• C as Context (former controllers). Assigns roles to actors, runs the play.

• A as Actor - user, system, external system

• R as Role - DCI role injected to Actor by Context. User: [buyer, inviter], system: [shop, blog]

• T as Template - html, json, xml, whatever. It's optional, sometimes Presenter does the job

• R as Router - we need something parsing requests and passing them to proper context

• A as Artifact - product of actor's action. Order, invoice, product, post, profile. Persistence goes here

• P as Presenter (former helpers)

sevos

class User
  def initialize(context)
    @context = context
  end

  def profile
    @context.system.collections.profiles.where(id: @context.session[:current_user_id]).first
  end
end

sevos

module ApplicationHelper
  def present(object, klass = nil)
    klass ||= "#{object.class}Presenter".constantize
    presenter = klass.new(object, self)
    yield presenter if block_given?
    presenter
  end
end

sevos

module Inviter
  def invite(invitee)
    open_profile(me)
    within ".header" do
      fill_in "Invite", with: invitee.email
      click_link "Invite"
    end

    def invite(invitee)
      Factory(:invitation, inviter: me, invitee_email: invitee.email)

sevos

This gist show problem with Ruby 1.9.3 on my Mac OS X Lion (10.7.2).

I've tried RVM and Rbenv+ruby-build. I tried linking with system openssl, rvm-openssl and homebrew-openssl. Even if linking succeeded, the error when requiring digest/sha1 appeared.

Problem with requiring digest/sha1 causes bundler not working at all.

This gist contains:

• test_1.9.2.txt - shows success on 1.9.2
• test_1.9.3.txt - shows failure on 1.9.3

sevos

require 'spec_helper'

require 'timebacus/use_cases/report_activity'

describe Timebacus::ReportActivity do
  context 'with valid data' do
    let(:activity) { mock(id: 5, duration: 1800, description: 'remote work') }
    mock_const Timebacus::ReportActivity, 'Activity' do |activity_class|
      activity_class.stub(new: activity)

sevos

# TODO: ValueObject should be immutable. Setter should return new instance.

class ValueObject < Struct
  def self.new(*fields)
    all_fields, optional_fields = if fields.last.is_a?(Hash)
                   optional_fields = fields.pop
                   [fields + optional_fields.keys, optional_fields]
                 else
                   [fields, {}]
                 end