LucasAllan.com

Mar 05

Installing Ruby 2.0.0-p0 on OSX

Jan 05

JRuby 1.7.2 Released

I’m big fan of JRuby. The Ruby language’s flexibility with the JVM’s power give to us a big weapon to create amazing applications. 

http://www.jruby.org/2013/01/04/jruby-1-7-2.html

Excellent talk about Refactoring

I have to say that this one was the best talk about refactoring that I ever watch.  I highly recommend it.

Jun 08

Rack 1.4.1 error when a parameter’s key is nil

While we are waiting for the next release of rack that will come with that fix, I extract a code from a pull request in rack repository and created a monkey patch to fix this problem.

This problem often happens when you are using google analytics or another service

https://gist.github.com/2896202

Apr 24

Representable Resources

Last weekend I created a new rubygem to help to build a good api to your application.

With this gem you can separate your models and business logics of your representable resource.

At the github has information about how to use it

https://github.com/lucasallan/representable_resources

Apr 14

ruby wrapper to access google movies informations

Hello everyone,

I just released a new rubygem to access google movies information.
Unfortunately google doest not provide a api interface to access this information. so my gem get the html and use nokogiri to parser it and get the information.
I hope it can be useful for someone. It was fun to working on it and learning more about nokogiri.

https://github.com/lucasallan/google_movies

Mar 27

Migrating from Wordpress to Tumblr

Hello guys,

After too many problems with wordpress, I’m migrating my blog to tumblr. This process can take a while because I’m in a very full week in my job.

Thanks,

Lucas

Feb 25

If you’re still using ruby-debug, you’re doing life wrong.

First, I’m not here to talk bad things about ruby-debug. For almost all my career as ruby developer I have been using ruby-debug and it works well.

But since I discovered pry my life as ruby developer is more easy. I really recommend you check it out, you probably will love it.

I don’t go talk to much about pry, there is to many documentation out there.

To know more about ruby debug and pry, I strongly recommend you to watch Mastering the ruby debugger by Jim Weirich.

By the way: this post title is based on If you’re using Node.js, you’re doing life wrong.

Jan 11

Books

Hi guys,

I took this month to read some books that I wanna read for a long time.

I created a gist to share which books I’m reading and I’m accepting more suggestions about another books. So I created a goal to read at least 2 books a month, maybe more.

In this month I’m reading Clean Code and Crafting Rails Applications. In a few weeks I will write a review about this books.

Dec 29

Generate PDF with prawn and Google charts

Hey guys, It’s a quickly post about how to generate pdf with prawn and google charts. Prawn is a awesome lib in ruby for generating PDF documents and google charts is a API to generate charts. I like to create a class responsible to generate my pdf documents. Here is my implementation:

# encoding: UTF-8
require 'open-uri'
class GenderReportPdf < Prawn::Document
  
  def initialize(mens, womans)
    super(top_margin: 70)
    add_title
    @mens = mens
    @womans = womans
    add_count
    add_image
  end
  
  def add_title
    text "Report by Gender", size: 28, style: :bold, position: :center
  end
  
  def add_count
    move_down 20
    text "Mens #{@h_count}"
    text "Womans #{@m_count}"
  end
  
  def add_image
    move_down 20
    image get_external_image, :position => :center
  end
  
  def get_external_image
    img = URI.parse(URI.encode("https://chart.googleapis.com/chart?cht=p3&chd=t:#{@mens},#{@womans}&chs=250x100&chl=Mens|Womans")).to_s
    img = open(img)
  end
  
end