Oct 9, 2016

Is X or Y faster in Ruby?

Oftentimes there are multiple ways to achieve the same thing in Ruby. For example, one thing I've recently tried to make a habit of is to use #zero? when checking if a value is, well, zero. It definitely reads nicer than doing a value == 0 comparison, but is it also faster?

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Oct 2, 2016

My best practices for testing with RSpec

Keeping the source code of your application in good structure is important. But structuring the code of your test might be even more important: When I'm new to an app, my second look is at the tests, to both see what's the level of coverage and to...

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Sep 25, 2016

Adding static pages to your Rails app

Sooner or later you want to pages to your Rails application that are not created dynamically, but rather contain either some marketing information, legal info like imprint or terms, or even feature some sales copy you call your homepage.

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Sep 22, 2016

How to include methods in the JSON representation of a model

When rendering your ActiveRecord models in your controller as JSON you often wanna include more than just the default attributes that calling #to_json on the model gives you. There are various hacks described on Stackoverflow, like overriding the #to_json, #as_json and #serializable_hash methods, two of which I can even find in my current (legacy) project.

Today I wanna show you the OOP way how to do this. Spoiler: We'll create a class.

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Sep 19, 2016

How to deal with factories in your Rails project you need all the time?

In all of my projects, I have some data that my tests heavily rely on: things like a list of currencies, shipping methods, a pre-defined list of roles, and other things that never change or very infrequently.

When writing tests, I do not want to create the same record from my factories over and over again for each and every test, but instead just have it available. How do you do that?

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Jul 20, 2016

Returning unique records from an ActiveRecord query

Having recently upgraded a legacy Rails project from 3.x to 4.2.x, one of the biggest benefits is that I can finally use some nice additions to ActiveRecord. One of my favorites is #distinct, which, as the name says, will return DISTINCT records for...

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May 14, 2016

How to conservatively update a single gem with bundler

I was recently called for help to update a gem in a Rails application I wrote a couple of months ago. It was important to only update a single gem (which had a known security vulnerability) and not touch any others, as this would have triggered a complete...

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Oct 20, 2015

Heroku Deploy Script

This time I wanna share with you something rather small, but really helpful: my default Heroku deploy script. It will push new code to your Heroku application and run migrations, if necessary.

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Sep 22, 2015

Rails Interactor Pattern - Part 2

In part 1 of this series we've looked on the basics of the interactor pattern, created an interactor dealing with the Mailgun API and refactored it to use a Result class to signalize success and failure. In this part, we want to add some method sugar to our solution, so that we don't have to deal with the setup process too much.

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