Manthan Damania mntdamania

Mac Homebrew (RVM/MySQL/Redis) setup

Follow the steps below to setup a local development environment:

XQuartz

iTerm2

PostgreSQL & PostGIS Cheatsheet

This is a collection of information on PostgreSQL and PostGIS for what I tend to use most often.

Ruby Metaprogramming Guide

Note: This guide works with Ruby 2.6+ through Ruby 3.x, with modern Ruby 3.x features highlighted where applicable. Core metaprogramming concepts remain consistent across Ruby versions.

This document has been collaboratively updated and modernized through an interactive process with Claude Code, revised with examples, visual diagrams, and Ruby 3.x compatibility.

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

Rails Rspec APIs Testing Notes

Folders Structure

  spec
  |--- apis #do not put into controllers folder. 
        |--- your_api_test_spec.rb  
  |--- controllers
  |--- models
  |--- factories
 |--- views

	user web;

	# One worker process per CPU core.
	worker_processes 8;

	# Also set
	# /etc/security/limits.conf
	# web soft nofile 65535
	# web hard nofile 65535
	# /etc/default/nginx

	See question on stack overflow: http://stackoverflow.com/questions/28595636/rails-4-how-to-give-alias-names-to-includes-and-joins-in-active-record-que

	- Model Student and model Teacher are both STI models with super class model User
	- Model Story is a STI model with super class model Task
	- includes() and joins(), both fails

	Rails alias naming convention (includes() and joins())

	- One model as parameter
	- is base model (includes(:users))

	# A user session class, a simplified mix of the following code samples:
	# * https://github.com/blog/1661-modeling-your-app-s-user-session
	# * http://www.jonathanleighton.com/articles/2013/revocable-sessions-with-devise/
	class Session < ActiveRecord::Base

	# Uncomment if you use Hobo Fields, else add these yourself
	# fields do
	# session_id :string, :index => true, :unique => true
	# accessed_at :datetime
	# user_ip :string

	#!/bin/bash

	# Function displaying wrong usage information
	# Proper usage is: ./dev_start.sh Rails-Project-Folder
	usage()
	{
	cat << EOF
	usage: $0 Rails-Project-Folder
	EOF
	}

	@import "dataTables/jquery.dataTables";

	/* A modifier pour avoir les bons espacements */

	body.active_admin .data_table {
	padding-bottom: 10px;
	}

	body.active_admin .dataTables_paginate {
	margin-top: -10px;