Thread parent and ancestors with thread_ancestors

Tiny gem to get thread ancestors.

Implementing Linear Regression using Ruby

A quick guide that shows how to use linear regression machine learning algorithms in Ruby. Using existing Ruby gems we will setup a linear regression model, train the algorithm and make predictions in minutes. For this example we will use historic house prices in Staten Island to predict the values of houses. [more inside]

Helpful Resources for Your Rails App Upgrade

Need to update your Rails app version? These resources will help the process go smoothly. [more inside]

Use prettier and rubocop in Rails applications for JavaScript, CSS and Ruby files

Reading Ruby Code: ROM - Domain Specific Languages

Reading Ruby Code is an on going series on code reading that explores the ROM library. In this post we explore domain-specific language (DSLs). There is a focus on how this influences code reading and how DSLs are implemented in ROM.

UI controllers in Rails

Adapting Rails controllers in modern needs :)

Design Patterns & Ruby - The Template Method

An introduction to the concept of design patterns in ruby world, with an overview of one of the most commonly used ones: the Template Method pattern. [more inside]

Deploy Rails App with Puma and Nginx on EC2 Ubuntu 14.04 LTS instance

Did you forget important step while deploying your app to AWS EC2 server? Here is the checklist for the deploying rails app to EC2 server:

Yet another guide to permission management using Pundit

Security is an important aspect of application development. Two main components of security are Authentication (Who are you?) and Authorization (are you supposed to be here?). Authentication verifies the user’s identity while authorization verifies whether that user has access rights on certain resources to perform actions on them.

[Screencast] Geocoding, Places and Maps

Using the Geocoder gem and Google APIs, learn how to add some geolocation functionality to your application.

feedtxt gem - reads Feed.TXT - feeds in text w/ metadata (YAML) n content in markdown

Hello, as an alternative to JSON Feed I’ve put together Feed.TXT - a new feed format in plain text with structured metadata in YAML and content in HTML or Markdown. Use the new feedtxt gem / library to read / parse the new feed format for publishing & sharing posts, articles, podcasts & more. Try Feedtxt.parse() returning an array with a metadata hash and items (w/ metadata hash and content). Cheers. PS: Feed.TXT is also knowns as RSS (Really Simple Sharing) 5.0 ;-)

How to Build a Simple, Lightweight APM Service from Scratch

In this article, Tyler talks through the process that he went through to build Tracebin, an open source “bin” style APM service. He worked through the challenges of hooking into framework’s instrumentation services, patching database libraries, keeping a small memory footprint, handling concurrency, reducing computational overhead, asynchronous data transmission and performance considerations on the server side.

Debugging Rails views in production

Quick tip for debugging what’s getting slow in the views in production.

The Future of News (Facebook & Co) w/ Web Feeds & feedparser gem ;-)

Hello, the notes from last night’s Vienna.rb talk titled “Meet Jason Feed - The Future of News & Syndication (Facebook & Co) w/ Web Feeds (Ruby Edition)”. All about Web Feed Formats in XML (Atom, RSS), JSON (JSON Feed), HTML (Microformats w/ h-entry/h-feed), TXT (Feed.TXT w/ YAML & Markdown) and more. The message & conclusion: Live and let live! The more formats the better! Let the computer (e.g. feedparser gem) handle the reading of feeds. One gem to rule them all! All your base are belong to feedparser ;-). Cheers.

Why you should probably avoid mixins

Mixins are another syntax for inheritance and inheritance is bad when used for code sharing

Using Rails with webpack generated assets

We wanted to use existing Rails workflow to upload the assets generated from webpack. Was able to achieve that with existing gems like asset_sync and sprockets gems and little rake task. [more inside]

Taking advantage of Mailchimp web hooks

An article on how we can take the advantage of the Mailchimp web hooks in order to keep our database synchronized with MailChimp data. [more inside]

Unit testing ActionCable channels with RSpec

Rails 5.1 doesn’t have official support for testing ActionCable channels yet. Here is the minimal example how to unit test a single channel action.

Acceptance testing using actors/personas

A lot of examples on how to structure your tests using classes and abstraction for better readability. [more inside]

Organize Your CSS with BEM

Learn how to organize your CSS with BEM. It’s great when your project starts to scale

Rubygems Monthly #2: Sinatra 2, Bundler 1.15, Rubocop, CanCanCan 2, Devise, Puma and

Gemnasium recently started to do monthly digest of some notable gem releases, here’s the second edition. :) [more inside]

Speeding Up Rendering Rails Pages with render_async

Adding new code to Rails controllers can slow your pages down. Find out how to make rendering your Rails pages faster. [more inside]

Deploy early and often

How can you deploy features that are not production ready yet?

Universal feedparser gem v2 Adds HTML Feeds w/ @Microformats (h-entry, h-feed, etc)

The universal feedparser gem that reads web feeds in XML (RSS, Atom) and JSON (JSON Feed) now supports HTML feeds w/ Microformats (h-entry, h-feed, etc.) Note: Microformats support in feedparser is optional. Install and require the the microformats gem to read feeds in HTML with Microformats. Happy publishing w/ web feeds. Cheers.

Digging into various gemspec file specifiers

I was cleaning up a gem’s packaged files and did some investigation around how various gems specify their file lists. Some interesting bits around “git ls-files” and whatnot.