This article will guide you through the thought process behind creating a picture_tag helper in Rails.

We implemented this helper to optimize how we serve images on our website and improve performance for SEO.

The result will be close to this:

<picture>  <source srcset=”path_to_image.webp” >  <img src=”path_to_image.png’” alt=”alt text” ></picture>

Above, you could envision as many sources as you wanted for different formats (or for additional sizes).

The thought process

When I start to implement something in rails, I almost always have the same internal debate:

  • Should I find a gem for that (and believe me, there *is* a…

The hot take

All coding is fundamentally made of magic and leaps of faith.

A mysterious road ahead
A mysterious road ahead
A mysterious road ahead — photo by

The shortish justification

It might be because I grew up with very close ties to the worlds created by Ursula K. Le Guin, JRR Tolkien, or JK Rowling. But I have always dreamt of being a wizard, a mage, or whatever term you want to give it.

And I believe the closest we can be to an actual wizard in the real world is coding. after all :

Any sufficiently advanced technology is indistinguishable from magic — Arthur C. Clarke’s third law.

Coding affects the real world and brings forth wonders that…

image of a terminal
image of a terminal
The results :)

Over the last couple of weeks, I have been trying to get the basics of go in my free time. To do so, I decided to build a terminal-based Pomodoro timer. If you are not familiar with the Pomodoro technique, here you can find more about it.

The code I will speak of in this article can be found here, if you have go installed you can build it and use it/test it to your heart’s content. If not, it is easy to do!

I shall not go into too much of the code, but some snippets will feature in…


As a manager, having regularly scheduled times to speak one on one with your team members about non-work-related things can benefit the manager, the team member, and the team considerably.

Photo by Tim Douglas from Pexels

This thought has not occurred to me alone, and there are probably many sources. In my head, I trace it to a podcast where the interviewee mentioned it. If someone knows the podcast I am talking about; please reach out. I want to read the interviewee’s book.

All this to say, the idea of a regular one-on-one meeting with my teammates stuck with me, and after six monthly one-on-one, I…

In this article, we will learn how to code a reactive navbar using rails.

If you want to follow along, here is the point in time where I start writing this article:

To do so, we want to imagine at least roughly how our navbar should look like when seeing it from a computer and a tablet, or phone.

Then we will code the style for four pre-determined breakpoints.

Finally, we will add some interactivity.

Rough sketch of what we want our navbar to look

When sketching the first pass of an element, especially for a personal project, I like to do it with pencil and paper.

It usually…

A couple of days ago, I had to create a suggestion system using, among other things, a full-text search.

I quickly came across pg_search. And let me tell you, people: this gem is crazy good. It will allow you out of the box to do a full-text search against several columns or even associations. (You can also run the search against all your models).

I won’t tell you all the functionalities, but I can tell you there are enough of them for most usages. It reproduces quite closely what PostgreSQL allows in terms of full-text search

It does need some…

First Decisions

Why this post ?

short story

I love learning and my latest learning project includes documenting what I do, making it public might make someone enjoy the adventure with me or even learn a little thing here or there :)

long story

Check it out at the repository I created to host my experiments (soon to be a website)

Initial Stack

I am reasonably sure that the stack will evolve since I will want to experiment and learn other languages as I progress, but in my case, I knew that I would start with a Rails Back End.

The remaining question was whether I would add a fancy js framework…

Pablo Curell Mompo

CTO of Study Advisor, learned how to code at Le Wagon. I love coding and plan to keep learning as much as I can of this wonderful world.

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