marckohlbrugge

The Unofficial 37signals/DHH Rails Style Guide

About This Document

This style guide was generated by Claude Code through deep analysis of the Fizzy codebase - 37signals' open-source project management tool.

Why Fizzy matters: While 37signals has long advocated for "vanilla Rails" and opinionated software design, their production codebases (Basecamp, HEY, etc.) have historically been closed source. Fizzy changes that. For the first time, developers can study a real 37signals/DHH-style Rails application - not just blog posts and conference talks, but actual production code with all its patterns, trade-offs, and deliberate omissions.

How this was created: Claude Code analyzed the entire codebase - routes, controllers, models, concerns, views, JavaScript, CSS, tests, and configuration. The goal was to extract not just what patterns are used, but why - inferring philosophy from implementation choices.

jorgemanrubia

Claude Linux System Configuration Assistant

System Context

I am running a Linux system and need help with configuration, setup, and administration tasks. Please assist me following Linux best practices and respecting system defaults.

Current System Information

• Distribution: Omarchy Linux (Arch-based)
• Window Manager: Hyprland
• Home Directory: /home/jorge
• Working Directory: Check with pwd before making assumptions

lazaronixon

<%= form_with model: citizen, class: "card flex flex-col gap", data: { controller: "form" } do |form| %>
  <div class="flex flex-col gap mb-2">
    <div class="flex flex-col gap-half">
      <% countries = Country.order(:name) %>
      <%= label_tag :country_id, "Country", class: "text-sm font-medium leading-none" %>
      <%= select_tag :country_id, options_from_collection_for_select(countries, :id, :name, citizen.country_id), include_blank: "Select one", class: "input", data: { action: "form#submit", form_submitter_param: "on_country_change" } %>
    </div>

    <div class="flex flex-col gap-half">
      <% states = State.where(country_id: citizen.country_id).order(:name) %>

peterc

• You MUST NOT try and generate a Rails app from scratch on your own by generating each file. For a NEW app you MUST use rails new first to generate all of the boilerplate files necessary.
• Create an app in the current directory with rails new .
• Use Tailwind CSS for styling. Use --css tailwind as an option on the rails new call to do this automatically.
• Use Ruby 3.2+ and Rails 8.0+ practices.
• Use the default Minitest approach for testing, do not use RSpec.
• Default to using SQLite in development. rails new will do this automatically but take care if you write any custom SQL that it is SQLite compatible.
• An app can be built with a devcontainer such as rails new myapp --devcontainer but only do this if requested directly.
• Rails apps have a lot of directories to consider, such as app, config, db, etc.
• Adhere to MVC conventions: singular model names (e.g., Product) map to plural tables (products); controllers are plural.
• Guard against incapable browsers accessing controllers with `allo

andrasbacsai

#!/bin/bash
# Script to update a firewall rule in a Hetzner Firewall with your current IP address.
# Good if you would like to restrict SSH access only for your current IP address (secure).

#################
# WARNING: This script will overwrite all rules in the firewall rules, so make sure you 
# added all the required rules.
# I use a separate firewall rule just for SSH access.
#################

MiroslavCsonka

ELASTIC_PASSWORD=<your-elastic-password>
KIBANA_PASSWORD=<your-kibana-password>

bakatz

#!/bin/bash

# Check if .env file is provided as argument
if [ "$#" -ne 1 ]; then
    echo "Usage: $0 <path-to-.env-file>"
    exit 1
fi

ENV_FILE=$1

tarellel

[
  // Standard macOS bindings
  {
    "bindings": {
      "up": "menu::SelectPrev",
      "pageup": "menu::SelectFirst",
      "shift-pageup": "menu::SelectFirst",
      "ctrl-p": "menu::SelectPrev",
      "down": "menu::SelectNext",
      "pagedown": "menu::SelectLast",

dhh

#!/usr/bin/env bash

# Abort sign off on any error
set -e

# Start the benchmark timer
SECONDS=0

# Repository introspection
OWNER=$(gh repo view --json owner --jq .owner.login)

ivan3bx

require "selenium-webdriver"
require "nokogiri"
require "net/http"

BASE_URL = "http://localhost:1313"

#
# This expects several things to be true:
#
# 1. Local hugo instance running at localhosts:1313