first post at netengine!

Not the best I've ever done, but I had to write something... A ruby implementation of the OAuth2 protocol for third party roles, enjoy!

http://goo.gl/UbHxI

extend vs include

I always make confusion, although I'm getting better, this should help:

module MainMod
  module SubMod
    def self.included(cls)
      puts "#{self} included in #{cls}"
      cls.extend ClassMethods
    end

    module ClassMethods
      
      def ext
        puts 'extended'
      end
  
    end
  
    def inc
      puts 'included'
    end

  end
end

class A
  include MainMod::SubMod # => MainMod::SubMod included in A
end

A.new.inc
A.ext

module Mod1
  inc MainMod::SubMod
end

class B
  inc Mod1 # => MainMod::SubMod included in Mod1 !!!(Mod1)
end

B.new.inc
# B.ext # does not exists, `ext` was extended on Mod1

Browser Wars

Waiting for ie, at least 7, but ideally all of them, to die

Source: StatCounter Global Stats - Browser Market Share

The easiest, fastest and safest way to get your ip address

curl ifconfig.me

thanks to AskUbuntu

Change the db with migrations on the fly

What if you want to add a column though the console with one line of code? (and you exactly know what this implies)

ActiveRecord::Migration.new.add_column :payments, :card_verification, :string, limit: 8
ActiveRecord::Migration.new.execute "full sql here"

Coffescript rendering

The correct way to render html inside your XHR response in Rails.

  app.showFlashMessages('<%=j flash_messages %>')
  $('.booking').replaceWith( '<%=j render @booking %>' )
  app.myFunction( <%=raw array.map(&:to_json) %> ) # TODO: double check

backtrace_silencers to clean the development log from missing assets

# /config/initializers/backtrace_silencers.rb
Rails.backtrace_cleaner.add_silencer { |line| line =~ /lib\/action_dispatch\/middleware\/static.rb/ } if Rails.env.development?

This simple line will clean up your development log to something like this:

[FTL] 
ActionController::RoutingError (No route matches [GET] "/assets/ecoologic/rooms/room_tb.png"):
  actionpack (3.2.5) lib/action_dispatch/middleware/static.rb:62:in `call'

This is only in development (or test?) as you usually don't use the static middleware in staging or production.