Pavel R pvrt

SSL setup: https://vimeo.com/209534466

Creating a join table

rails g migration CreateJoinTableGameInvitesInvitees game_invites invitees

Models linked together must be in alphabetical order when naming the migration file
The columns can be given any names as long as they are correctly associated in the model file:

has_and_belongs_to_many :invitees, class_name: 'User', foreign_key: 'invitee_id', #the associated column and the alien model
                        join_table: 'game_invites_invitees', #name of the join table
                        association_foreign_key: 'game_invite_id' #the name of the domestic model in the join table

SSL setup: https://vimeo.com/209534466

Creating a join table

rails g migration CreateJoinTableGameInvitesInvitees game_invites invitees

Models linked together must be in alphabetical order when naming the migration file
The columns can be given any names as long as they are correctly associated in the model file:

has_and_belongs_to_many :invitees, class_name: 'User', foreign_key: 'invitee_id', #the associated column and the alien model
                        join_table: 'game_invites_invitees', #name of the join table
                        association_foreign_key: 'game_invite_id' #the name of the domestic model in the join table

Elixir + Phoenix Framework + Guardian + JWT + Comeonin

This is a updated guide aimed to support Phoenix 1.3 and Guardian 1.0

Preparing environment

We need to generate secret key for development environment.

mix phx.gen.secret
# ednkXywWll1d2svDEpbA39R5kfkc9l96j0+u7A8MgKM+pbwbeDsuYB8MP2WUW1hf

Install Letsencrypt

Install with apt-get

$ sudo apt-get update    
$ sudo apt-get install letsencrypt

Generate a strong DH

$ sudo openssl dhparam -out /etc/ssl/certs/dhparam.pem 2048

	<!--
	Author: <Anthony Sychev> (hello at dm211 dot com \| a.sychev at jfranc dot studio)
	Buy me a coffe: https://www.buymeacoffee.com/twooneone
	Untitled-1 (c) 2022
	Created: 2022-01-25 20:06:02
	Desc: Attach some dom element on the bottom of screen as absolute, triggered to move on resize address bar.
	-->

	<html>

	# Based on https://steveholgado.com/nginx-for-nextjs/

	# - /var/cache/nginx sets a directory to store the cached assets
	# - levels=1:2 sets up a two‑level directory hierarchy as file access speed can be reduced when too many files are in a single directory
	# - keys_zone=STATIC:10m defines a shared memory zone for cache keys named “STATIC” and with a size limit of 10MB (which should be more than enough unless you have thousands of files)
	# - inactive=7d is the time that items will remain cached without being accessed (7 days), after which they will be removed
	# - use_temp_path=off tells NGINX to write files directly to the cache directory and avoid unnecessary copying of data to a temporary storage area first
	proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=STATIC:10m inactive=7d use_temp_path=off;

	upstream nextjs_upstream {

	#! /bin/bash

	# I am exporting variables to have them in my shell after I ran the script.
	# I find that convenient. Of course, those can/should be removed in "serious" deployments.

	# create a time string between "1:00" and "5:59"
	export REBOOT_TIME=`perl -e "print scalar(int 1 + 5 * rand) . q[:] . scalar(int 6 * rand) . scalar(int 9 * rand)"`
	export HOSTNAME=`hostname`
	export NETWORK_DEVICE=eth0 # might be different in cloud servers

	.counter
	.down{:onclick => "decreaseCount(event, this)"} -
	%input{:type => "text", :value => "1"}
	.up{:onclick => "increaseCount(event, this)"} +

	#!/usr/bin/env elixir

	defmodule Canvas do
	@behaviour :wx_object

	@title "Canvas Example"
	@size {600, 600}

	def start_link() do
	:wx_object.start_link(__MODULE__, [], [])

	http://stackoverflow.com/questions/22667401/postgres-json-data-type-rails-query
	http://stackoverflow.com/questions/40702813/query-on-postgres-json-array-field-in-rails

	#payload: [{"kind"=>"person"}]
	Segment.where("payload @> ?", [{kind: "person"}].to_json)

	#data: {"interest"=>["music", "movies", "programming"]}
	Segment.where("data @> ?", {"interest": ["music", "movies", "programming"]}.to_json)
	Segment.where("data #>> '{interest, 1}' = 'movies' ")
	Segment.where("jsonb_array_length(data->'interest') > 1")

Pavel R pvrt

Creating a join table

Creating a join table

Elixir + Phoenix Framework + Guardian + JWT + Comeonin

Preparing environment

Install Letsencrypt

Generate a strong DH

Configure nginx