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Posted on 2017-07-27 How learning Elixr made me a better Ruby developer I write more functional code, avoid mutating data and side effects in methods, do not shy away from (modern) concurrency primitives, I explored alternative deployment options. Quick intro I write Ruby code for living since 2007/2008, so you may call me a veteran (or a combatant if it pleases you). Along the way, I wrote some J

Posted on 2015-11-30 Using Repository pattern to migrate Rails app from MongoDB to PostgreSQL …because you will need to make that migration. At Amberbit, we have a legacy project which uses MongoDB. We’ve been working on it for few years now. Through this time it obviously grow and changed a lot and at some point we started focusing more on it’s performance. The biggest issue we had was that we we

Posted on 2015-06-14 Closures: Elixir vs. Ruby vs. JavaScript Closures are not the same across languages. Learn how they differ between Ruby, JavaScript and Elixir to avoid bugs and confusion. tl;dr Closures in Elixir prevent nasty side-effects. Closures in JavaScript are the worst of the three (suprirse, surprise!). Ruby is slightly better thanks to functional elements in the language, but not pe

Posted on 2015-04-22 Why Rails 5 / Turbolinks 3.0 / Action Cable matter, and why @dhh was right all along Update: just use Phoenix LiveView. tl;dr Rails won the hearts of developers and entrepreneurs because it made creation of shiny web apps easy and fast. This is not the same experience you have when you build Single Page Apps using JavaScript frameworks (it tends to be way slower, and you end u

Posted by Hubert Łępicki on 2011-07-13 Hubert is partner at AmberBit. Rails, Elixir and functional programming are his areas of expertise. Rack middleware is hot topic these days and anyone who is reading Ruby-related blog sites must have heard about it already. However, if you didn’t, here’s short quote from Rack site: Rack provides an minimal interface between webservers supporting Ruby and Ruby

Posted on 2014-02-19 Building and documenting API in Rails How to build API in Ruby on Rails. These are really exciting times for web developers. New JavaScript frameworks emerge constantly, completely changing the way we think about building web applications. With libraries such as AngularJS, Ember.js or Backbone.js, the server is no longer responsible for generating complete pages. Its role is o

Posted on 2014-02-12 Automate tasks on the web with Ruby and Capybara Automate all the things! (on the web!) Capybara is a tool that Ruby on Rails developers mostly use for testing their web applications. This tool, however, can be also used to automate boring/repeating/long running tasks on the web or scraping information from web sites that were not kind enough to provide API. Use cases I am laz

Posted on 2014-02-04 PostgreSQL awesomeness for Rails developers A handful of timeless PostgreSQL tips. PostgreSQL is the true awesome SQL database, that you should probably be using for your relational data in your Ruby on Rails applications. In fact, if you are using Heroku, you are quite likely using PostgreSQL already. If you are not using PostgreSQL, or just starting, you have no idea how awe

Posted on 2014-01-20 AngularJS templates and Ruby on Rails assets pipeline How to embed Angular (1.2) templates in Rails apps. Developing AngularJS and Rails applications is our favorite way to build web applications at AmberBit. Why Angular? Because it allows us to finally separate user interface from Rails back-end. The promise of building an API along with your application is also much easier t