How To Delegate Methods in Ruby

In this article you’ll learn about delegation in Ruby using 3 different methods. Method delegation allows you to pass method calls into another object so you can implement design patterns.

Phusion: Passenger 5.3.5 released

Version 5.3.5 of the Passenger app server fixes an issue with Ubuntu 18.04 package installation, and improves usability of crash reports:

How to share containers across multiple projects using Docker Compose

Learn how to share containers (e.g. a database) across multiple projects using Docker Compose and networks https://www.chrisblunt.com/rails-on-docker-share-containers-across-multiple-projects/

Video: Intro to Rails Code Audits

Want to learn how to audit your Rails code base? Here’s a video introduction to Ruby on Rails code audits. [more inside]

Exceptional Creatures: Net::OpenTimeout

Net::OpenTimeout is raised when a connection cannot be created within a specified amount of time. Getting this error a few times can be a sign of a healthy application, although you may want to add some error handling. Meet Net::OpenTimeout at Exceptional Creatures

Changelogs: To write or to generate?

Part III of our series on changelogs focuses on processes and tools. How can we, especially in larger open source projects with countless contributors, ensure a mostly complete changelog? How much automation is possible and how much is useful? This article tries to answer all of these questions and gives valuable tips for overloaded open source maintainers.

5 Ruby Tips You Probably Don’t Know

In this article we’re going to explore the following topics:

The Magic of Class-level Instance Variables

Remember our crazy adventure in which we injected functionality to a class by changing the way Ruby creates objects? This week, we’re turning that into a Wrappable module to learn all about class-level instance variables. 🧙🏼‍♀️

Ruby 2.6 adds RubyVM::AST module | BigBinary Blog

rspec-benchmark v0.4.0 with complexity matchers!

The newest rspec-benchmark adds computational complexity matchers such as perform_linear or perform_loagarithmic to help you establish the asymptotic behaviour of your code in a test suite. It will also allow you to generate a range of test inputs for your benchmark using in_range matcher. Enjoy!

London Ruby Unconference is this Saturday!

The London Ruby Unconference is a free event for Rubyists from the UK and abroad. The London Ruby community meets every year in the first Saturday of October to share their enthusiasm for Ruby and learn from each other in more than 16 sessions suggested by the attendees. Get your free ticket here! and join us with your colleagues and friends!

SimpleAMS: Modern Ruby Serializers

Hello, I have been building a gem lately (=last 1 year) to replace the original ActiveModel Serializers. It’s called SimpleAMS. The idea is to embrace POROs and provide a very flexible interface. Using some basic benchmarks it seems it’s a bit slower than jsonapi-rb. Although there are a couple of things left to do (including optimizations), we have it in production and integrated it in various projects. If you are starting a new project please consider using it :)

Why the CSV standard library is broken (Part III) - CSV Record as Array? Hash? etc.

Hello, I’ve written a new (and third) episode on why the CSV standard library is broken, broken, broken (and how to fix it). Let’s have a look at how to handle csv records - How about returning an array? hash? struct? row? etc. Or how about adding new “low-level” parsers for supporting more dialects and formats or for faster code with c-extensions? Questions and comments welcome. Cheers. Prost. PS: If you want to see other (more) CSV formats / dialects pre-configured and supported “out-of-the-box” in the new csv reader, please tell. PPS: Why care about CSV? Did you know - data is the new gold :-) and CSV is the world’s most popular (No. 1) data format.

Rails Parts

When we restarted developing an application from scratch, we stumbled upon a great way to split the files in your Rails app into different parts. Read about how to use Rails in parts.

Kafka vs Mosquitto - which tool is better for communication between microservices?

In this post, we’re going to make a comparison between two popular tools - Kafka and Mosquitto to see which one is better for communication between microservices.

Datatables Basics

Datatables in Rails that implements pagination, search, sorting by column. Read more here Integrate Datatables without using any pagination gems in Rails Includes a link to a sample Rails project.

The Problems With Validating ActiveRecord Models and Why State Validation Is a Bad Id

In the typical Rails application, you can find the most of the validations in the ActiveRecord models, which is nothing surprising - ActiveRecord models are used for multiple things. Whether it is a good thing, or a bad thing (in most cases it’s the latter) deserves a separate book or at least blog post-series as it’s not a simple problem, there is one specific thing that can cause a lot of issues that are difficult to solve and go beyond design decisions and ease of maintenance of the application, something that impacts the behavior of the model - the validations. [more inside]

My awesome RSpec hacks

Check out my gist article. Hope you will find something useful hacks to make you testing easy

Nine tips for Rails migration mastery

Several guidelines to help you navigate the many database changes you’ll make throughout your career as a Rails developer. [more inside]

Browserino -- A user-agent string parser.

Tired of asking your users for their browser / OS and their versions? Do you want to know wether they are visiting your website on mobile or would you like to know their locale to be able to provide a better experience? Then check out Browserino, a user-agent string parser with Rails support.

About refactoring features in RubyMine

https://blog.jetbrains.com/ruby/2018/09/rubymine-refactorings/ [more inside]

A fast multi-token string replace library for ruby for non-regex use cases

Created this gem since I need something faster than gsub. Wraps an opensource C implementation of the Aho-Corasick algorithm [more inside]

Runtime Introspection in Ruby

Ruby offers a variety of methods that allow you to ask an object about its capabilities (which messages/methods does it respond to?), its variables and constants, and its backstory (the object’s class and ancestors). [more inside]

PHP to Ruby :: Learn Ruby from rhyming PHP examples

PHP to Ruby [more inside]

How to: Get most of the database cleaner

Road to fast and sane specs continues, this time we fine tune database cleaner setup, to use mix of transactions, deletion and truncation ⚡️ ⚡️ #testing #ruby