DEV Community: Germán Alberto Gimenez Silva

Ruby 4.0 Is Here. Why Is AI Still Writing Ruby 3.0?

Germán Alberto Gimenez Silva — Thu, 18 Jun 2026 02:33:34 +0000

Ruby 4.0 Is Here. Why Is AI Still Writing Ruby 3.0?

June 17, 2026

Artificial intelligence has become an indispensable tool for Ruby developers.

We ask AI assistants to write methods, refactor services, generate RSpec tests, explain stack traces, and even architect new features. For many developers, AI is no longer an experiment—it’s part of the daily workflow.

That’s exactly why we should expect more from it.

If I’m writing a Ruby 4.0 application, I don’t want my AI assistant producing Ruby that looks like it came from 2021.

👉 Read the full article.

Ruby 4.0 Is Here. Why Is AI Still Writing Ruby 3.0? – Linking Ruby knowledge from the most remote places in the world.

Ruby 4.0 Is Here. Why Is AI Still Writing Ruby 3.0? June 17, 2026 Artificial intelligence has become an indispensable tool for Ruby developers. We ask AI assistants to write methods, refactor servi…

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I Have Written Ruby for Years and Just Discovered Enumerator#feed

Germán Alberto Gimenez Silva — Tue, 16 Jun 2026 02:26:59 +0000

I Have Written Ruby for Years and Just Discovered Enumerator#feed

June 15, 2026

Ruby is full of delightful surprises.

Even after years of writing Ruby professionally, I still occasionally stumble upon a feature that makes me stop and think:

“Wait… Ruby can do that?”

Recently, that feature was Enumerator#feed.

Most Ruby developers are familiar with Enumerators. We use them every day through methods like map, select, and each. Some of us have even created custom Enumerators using Enumerator.new.

But very few developers seem to know about feed.

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👉 Read the full article.

Ruby 4.0 Is Here. Why Is AI Still Writing Ruby 3.0? – Linking Ruby knowledge from the most remote places in the world.

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The Rails Deployment Landscape in 2026

Germán Alberto Gimenez Silva — Mon, 15 Jun 2026 03:12:20 +0000

The Rails Deployment Landscape in 2026

June 15, 2026

For years, deploying a Rails application meant choosing between managing your own servers or using Heroku. Today, the ecosystem offers more options than ever, each with different trade-offs in simplicity, control, cost, and scalability.

If you’re starting a new Rails project in 2026, understanding these options can save significant time and operational overhead.

Built for Ruby on Rails

Build Maps Without

Google APIs

Generate beautiful production-ready maps directly from your Rails backend. Fast rendering, zero external dependencies, full control.

View Live Demo →Read Docs

✓ No API fees✓ Self-hosted✓ Rails Native✓ Fast Rendering

👉 Read the full article.

The Rails Deployment Landscape in 2026 – Linking Ruby knowledge from the most remote places in the world.

The Rails Deployment Landscape in 2026 June 15, 2026 For years, deploying a Rails application meant choosing between managing your own servers or using Heroku. Today, the ecosystem offers more opti…

rubystacknews.com

This Week in Rails: Better Guides, Better Framework

Germán Alberto Gimenez Silva — Thu, 11 Jun 2026 01:32:16 +0000

This Week in Rails: Better Guides, Better Framework

June 10, 2026

The Rails team had another busy week, shipping documentation improvements, infrastructure updates, and a collection of bug fixes across the framework.

Here are some of the highlights.

The Active Job Guide Gets a Major Refresh

The revamped Active Job Basics guide is now live.

It covers everything from Solid Queue and background jobs to testing, debugging, and bulk enqueueing. Whether you’re new to background processing or looking to modernize an existing application, the updated guide is worth revisiting.

<img src="https://rubystacknews.com/wp-content/uploads/2026/04/topo.png" alt="Tokyo Topographic Map">







      Built for Ruby on Rails

    <h2 style="margin:0 0 16px 0;font-size:54px;line-height:1.05;font-weight:800;color:#ffffff">
      Build Maps Without<br>Google APIs
    </h2>

    <p style="margin:0 0 26px 0;font-size:20px;line-height:1.6;color:#c6d2dd;max-width:620px">
      Generate beautiful production-ready maps directly from your Rails backend.
      Fast rendering, zero external dependencies, full control.
    </p>

    <div style="display:flex;gap:14px;flex-wrap:wrap">

      <a href="https://mapview.rubystacknews.com/" target="_blank" style="display:inline-block;padding:16px 28px;background:linear-gradient(135deg,#00e8c6 0%,#00caa5 100%);color:#08111b;text-decoration:none;font-size:16px;font-weight:800;border-radius:14px;box-shadow:0 12px 28px rgba(0,232,198,.35)">
        View Live Demo →
      </a>

      <a href="https://ggerman.github.io/libgd-gis/" target="_blank" style="display:inline-block;padding:16px 28px;background:rgba(255,255,255,.05);color:#ffffff;text-decoration:none;font-size:16px;font-weight:700;border-radius:14px;border:1px solid rgba(255,255,255,.14)">
        Read Docs
      </a>

    </div>

    <div style="display:flex;gap:18px;flex-wrap:wrap;margin-top:24px;color:#9db0c1;font-size:14px;font-weight:600">
      <span>✓ No API fees</span>
      <span>✓ Self-hosted</span>
      <span>✓ Rails Native</span>
      <span>✓ Fast Rendering</span>
    </div>

  </div>

</div>

👉 Read the full article.

This Week in Rails: Better Guides, Better Framework – Linking Ruby knowledge from the most remote places in the world.

This Week in Rails: Better Guides, Better Framework June 10, 2026 The Rails team had another busy week, shipping documentation improvements, infrastructure updates, and a collection of bug fixes ac…

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The Hidden DSL Inside Every Rails Model

Germán Alberto Gimenez Silva — Wed, 10 Jun 2026 03:03:14 +0000

The Hidden DSL Inside Every Rails Model

June 10, 2026

Most Rails developers use belongs_to, has_many, scope, and validates every day.

We type them almost without thinking.


class User < ApplicationRecord
  belongs_to :company

  validates :email, presence: true

  scope :active, -> { where(active: true) }
end

But here’s something interesting:

None of those are Ruby keywords.

They’re methods.

In fact, a Rails model is less like a traditional Ruby class and more like a Domain Specific Language (DSL) built on top of Ruby.

Once you see it, it’s hard to unsee.

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The Empty Model

A Rails model starts life as a completely ordinary Ruby class.


class User < ApplicationRecord
end

At first glance, there’s nothing special here.

User inherits from ApplicationRecord, which inherits from ActiveRecord::Base.

That’s where the magic begins.

By inheriting from Active Record, the class gains hundreds of methods that allow us to describe data, relationships, validations, callbacks, and behavior using a concise DSL.

Associations

Consider this:


class User < ApplicationRecord
  belongs_to :company

  has_many :posts
end

When Rails reads these lines, it isn’t creating relationships in the database.

It’s executing methods.

Those methods generate additional behavior behind the scenes.

After declaring belongs_to :company, Rails creates methods such as:

👉 Read the full article.

The Hidden DSL Inside Every Rails Model – Linking Ruby knowledge from the most remote places in the world.

The Hidden DSL Inside Every Rails Model June 10, 2026 Most Rails developers use belongs_to, has_many, scope, and validates every day. We type them almost without thinking. class User < Applicati…

rubystacknews.com

The Shared Echo: Understanding Ruby on Rails’ Request–Response Cycle

Germán Alberto Gimenez Silva — Tue, 09 Jun 2026 01:50:37 +0000

The Shared Echo: Understanding Ruby on Rails’ Request–Response Cycle

June 8, 2026

As developers, we often chase the big topics.

Distributed systems.

Microservices.

Event-driven architectures.

AI.

Scalability.

Performance.

The industry constantly presents us with bigger mountains to climb.

In that pursuit, we sometimes walk past the things we use every single day.

The familiar.

The routine.

The pieces that quietly do their job without asking for attention.

One of those pieces is the Ruby on Rails request–response cycle.

Every page we render.

Every API endpoint we expose.

Every button a user clicks.

Every request follows the same journey.

Most of us know the destination.

Fewer of us stop to appreciate the path.

Today, I’d like to explore that path through a different lens.

Not as a pipeline.

Not as a stack.

But as a shared echo.

The Shared Echo

Imagine standing at the edge of a canyon.

You speak.

Your voice travels forward.

It touches the landscape.

The rocks shape it.

The distance changes it.

The air transforms it.

When the sound returns, it is no longer exactly what you said.

It is an echo.

A reflection of your original voice shaped by everything it encountered along the way.

A Rails request works much the same way.

The user sends a message.

The application listens.

Each layer hears that message, transforms it, and passes it forward.

When the response finally returns to the browser, it carries the fingerprints of every layer that participated in its creation.

No single component owns the response.

Together, they create the echo.

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The Shared Echo: Understanding Ruby on Rails’ Request–Response Cycle – Linking Ruby knowledge from the most remote places in the world.

The Shared Echo: Understanding Ruby on Rails’ Request–Response Cycle June 8, 2026 As developers, we often chase the big topics. Distributed systems. Microservices. Event-driven architectures.…

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Ruby’s Ancestor Chain: Why prepend Cuts the Line

Germán Alberto Gimenez Silva — Mon, 08 Jun 2026 01:57:26 +0000

June 7, 2026

When Ruby receives a method call, it follows a well-defined search path to determine where that method is implemented. Most developers learn inheritance early, but fewer take the time to understand the complete method lookup path, also known as the ancestor chain.

Understanding this mechanism can make debugging easier, clarify how Rails works under the hood, and explain why prepend behaves differently from include.

Read Complete article

Ruby’s Ancestor Chain: Why prepend Cuts the Line – Linking Ruby knowledge from the most remote places in the world.

June 7, 2026 When Ruby receives a method call, it follows a well-defined search path to determine where that method is implemented. Most developers learn inheritance early, but fewer take the time …

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Turning a Generic LLM into a Ruby Expert: What RAG Fixed and What It Didn’t

Germán Alberto Gimenez Silva — Fri, 05 Jun 2026 02:35:35 +0000

Turning a Generic LLM into a Ruby Expert: What RAG Fixed and What It Didn’t

June 4, 2026

A practical look at hallucinations, retrieval, and why having the right documentation is not the same as understanding it.

Over the past few months, I’ve been experimenting with a simple question:

Can a generic LLM become a Ruby expert simply by giving it access to Ruby documentation?

The answer is both yes and no.

Like many developers exploring AI tooling, I built a Retrieval-Augmented Generation (RAG) pipeline using a local vector database and indexed Ruby documentation. The goal was straightforward: reduce hallucinations and improve technical accuracy when answering questions about Ruby libraries and APIs.

The results were fascinating.

The model improved dramatically.

But it didn’t stop hallucinating.

Instead, the hallucinations evolved.

The Assumption Most Developers Make

When first learning about RAG, many developers assume a workflow like this:


Question
    ↓
Retrieve relevant documentation
    ↓
Provide context to LLM
    ↓
Correct answer

It feels logical.

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Turning a Generic LLM into a Ruby Expert: What RAG Fixed and What It Didn’t – Linking Ruby knowledge from the most remote places in the world.

Turning a Generic LLM into a Ruby Expert: What RAG Fixed and What It Didn’t June 4, 2026 A practical look at hallucinations, retrieval, and why having the right documentation is not the same …

rubystacknews.com

RubyGems 4.0.13 and Bundler 4.0.13 Released with New Supply-Chain Security Protections

Germán Alberto Gimenez Silva — Thu, 04 Jun 2026 02:49:38 +0000

RubyGems 4.0.13 and Bundler 4.0.13 Released with New Supply-Chain Security Protections

June 3, 2026

The RubyGems team has released RubyGems 4.0.13 and Bundler 4.0.13, bringing a combination of security improvements, bug fixes, and quality-of-life enhancements for Ruby developers.

👉 Read the full article.

RubyGems 4.0.13 and Bundler 4.0.13 Released with New Supply-Chain Security Protections – Linking Ruby knowledge from the most remote places in the world.

RubyGems 4.0.13 and Bundler 4.0.13 Released with New Supply-Chain Security Protections June 3, 2026 The RubyGems team has released RubyGems 4.0.13 and Bundler 4.0.13, bringing a combination of secu…

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Turning a Generic LLM Into a Ruby-LibGD Expert (One Correction at a Time)

Germán Alberto Gimenez Silva — Wed, 03 Jun 2026 02:49:16 +0000

Turning a Generic LLM Into a Ruby-LibGD Expert (One Correction at a Time)

June 2, 2026

What a day of conversations taught me about context, memory, and the limits of local AI models.

A few days ago, I started what seemed like a simple experiment.

I wanted a local LLM to help me work on a Ruby gem I’ve been developing: Ruby-LibGD , a Ruby binding for the GD Graphics Library.

The goal wasn’t complicated. I wanted the model to help me create examples, improve documentation, generate tutorials, and eventually contribute code.

What followed became an accidental study of how modern LLMs learn—or more accurately, how they appear to learn.

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Turning a Generic LLM Into a Ruby-LibGD Expert (One Correction at a Time) – Linking Ruby knowledge from the most remote places in the world.

Turning a Generic LLM Into a Ruby-LibGD Expert (One Correction at a Time) June 2, 2026 What a day of conversations taught me about context, memory, and the limits of local AI models. A few days ago…

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The Original Sin, the Scorpion, and Local AI

Germán Alberto Gimenez Silva — Tue, 02 Jun 2026 01:57:15 +0000

The Original Sin, the Scorpion, and Local AI

June 1, 2026

For the last few weeks, I have been experimenting with local AI models to help me develop and maintain Ruby projects.

👉 Read the full article.

The Original Sin, the Scorpion, and Local AI – Linking Ruby knowledge from the most remote places in the world.

The Original Sin, the Scorpion, and Local AI June 1, 2026 For the last few weeks, I have been experimenting with local AI models to help me develop and maintain Ruby projects. Built for Ruby on Rai…

rubystacknews.com

Turning Years of Ruby Knowledge Into a Local Coding Assistant

Germán Alberto Gimenez Silva — Mon, 01 Jun 2026 03:09:07 +0000

Turning Years of Ruby Knowledge Into a Local Coding Assistant

June 1, 2026

Introduction

Over the years, most Ruby developers accumulate a vast amount of knowledge.

Not just source code, but articles, documentation, experiments, bug fixes, pull requests, design decisions, and lessons learned from maintaining production systems.

The problem is that this knowledge often remains scattered across repositories, blogs, notes, and forgotten directories. Even when the information exists, finding the right piece of knowledge at the right time can be surprisingly difficult.

Recent advances in local AI models have created an interesting opportunity: what if we could turn years of accumulated Ruby expertise into a coding assistant that understands our tools, libraries, and development practices?

This article explores that idea.

👉 Read the full article.

Turning Years of Ruby Knowledge Into a Local Coding Assistant – Linking Ruby knowledge from the most remote places in the world.

Turning Years of Ruby Knowledge Into a Local Coding Assistant June 1, 2026 Introduction Over the years, most Ruby developers accumulate a vast amount of knowledge. Not just source code, but article…

rubystacknews.com