pikender

http://blog.codeclimate.com/blog/2012/10/17/7-ways-to-decompose-fat-activerecord-models/

• wisper: A micro library providing Ruby objects with Publish-Subscribe capabilities
• Service Objects https://blog.lelonek.me/what-service-objects-are-not-7abef8aa2f99#.fw7qvlure
• A Ruby implementation of an EventStore based on Active Record.
• Interactor provides a common interface for performing complex user interactions.
  • http://daphsta.github.io/ruby%20rails%20learn/2015/01/25/interactors-to-organise-business-logic.html
  • http://www.whitewashing.de/2012/08/13/oop_business_applications_entity_boundary_interactor.html
  • http://insights.workshop14.io/2015/08/16/introducing-interactors-to-represent-getting-stuff-done.html
• Inspired from Light Service

pikender

• https://github.com/jwhiteman/a-little-elixir-goes-a-long-way
• https://github.com/exercism/xelixir
• http://elixirkoans.io/

pikender

• Create Stack
  • http://elixir-lang.org/docs/stable/elixir/GenServer.html
• Kitty Server
  • http://learnyousomeerlang.com/what-is-otp#the-basic-server
  • http://learnyousomeerlang.com/clients-and-servers
• Counter
  • http://dantswain.herokuapp.com/blog/2015/01/06/storing-state-in-elixir-with-processes/
• https://github.com/dinosaurkfb/Erlang-exercises
• Stable marriage problem
• http://theburningmonk.com/2015/03/solving-the-stable-marriage-problem-in-erlang/

pikender

• The birth of a Cangaroo
• Gem: cangaroo
• Gem: spree_wombat
• Using Wombat Extensions
• Wombat Extensions List
• Hub Samples: Single point of reference for sample object and webhook payloads
• Blog - How to Integrate

Shopify Integration Test

pikender

## Changeset Errors in a string
Enum.join(Enum.map(changeset.errors, fn(x) -> {a, b} = x; Atom.to_string(a) <> " " <> b; end), ",")

## Refund
alias Nectar.Repo; alias Nectar.LineItemReturn; alias Nectar.Refund
lr = Repo.get(LineItemReturn, 4) ## Change 4 to relevant id 
c = Ecto.build_assoc(lr, :refund)
r = Refund.create_changeset(c, %{"amount" => 20})
r.errors

pikender

• https://github.com/parroty/exprof
• https://github.com/alco/benchfella
• https://github.com/joekain/bmark
• https://github.com/wg/wrk
• http://learningelixir.joekain.com/profiling-elixir/
• http://learningelixir.joekain.com/profiling-elixir-2/

pikender

    add support for removing from schema as well

diff --git a/apps/nectar/web/models/product.ex b/apps/nectar/web/models/product.ex
index 100e830..38174a7 100644
--- a/apps/nectar/web/models/product.ex
+++ b/apps/nectar/web/models/product.ex
@@ -2,7 +2,8 @@ defmodule Nectar.ModelExtension do
   defmacro __using__(_opts) do
     quote do
       Module.register_attribute(__MODULE__, :schema_changes, accumulate: true)

pikender

defmodule Nectar.ModelExtension do
  defmacro __using__(_opts) do
    quote do
      Module.register_attribute(__MODULE__, :schema_changes, accumulate: true)
      Module.register_attribute(__MODULE__, :remove_schema_changes, accumulate: true)
      import Nectar.ModelExtension, only: [add_to_schema: 1, remove_from_schema: 1]
      @before_compile Nectar.ModelExtension
    end
  end

pikender

# Without this fix, downgrading from Rails 4 to Rails 3 causes session cookies to blow up.
#
# The way the flash is stored in the session changed in a backwards-incompatible way.

if Rails::VERSION::MAJOR == 3

  module ActionDispatch
    class Flash
      def call(env)
        if (session = env['rack.session']) && (flash = session['flash'])

pikender

# Refer https://github.com/phoenixframework/phoenix/blob/master/lib/phoenix/view.ex#L136
# For inspiration and implementation
defmodule Nectar.Web do  
  def view do
    quote do
      import unquote(__MODULE__), only: [template_root_folder: 1]
      use Phoenix.View, root: template_root_folder(__MODULE__)
      ...
    end
  end