Rodrigo Boniatti boniattirodrigo

Common Regular Expressions for Django URLs

A list of comman regular expressions for use in django url's regex.

Example Django URLs patterns:

urlpatterns = patterns('',

Primitive Types & Reference Types in JavaScript

An explanation of JavaScript's pass-by-value, which is unlike pass-by-reference from other languages.

Facts

JavaScript has 2 kinds of variable types: primitive and reference.
A fixed amount of memory is reserved after creation of every variable.
When a variable is copied, it's in-memory value is copied.
Passing a variable to a function via a call also creates a copy of that variable.

Primitive Types

Postgres Cheatsheet

This is a collection of the most common commands I run while administering Postgres databases. The variables shown between the open and closed tags, "<" and ">", should be replaced with a name you choose. Postgres has multiple shortcut functions, starting with a forward slash, "". Any SQL command that is not a shortcut, must end with a semicolon, ";". You can use the keyboard UP and DOWN keys to scroll the history of previous commands you've run.

Setup

installation, Ubuntu

http://www.postgresql.org/download/linux/ubuntu/ https://help.ubuntu.com/community/PostgreSQL

Default

Powerlevel10k

JWT Auth + Refresh Tokens in Rails

This is just some code I recently used in my development application in order to add token-based authentication for my api-only rails app. The api-client was to be consumed by a mobile application, so I needed an authentication solution that would keep the user logged in indefinetly and the only way to do this was either using refresh tokens or sliding sessions.

I also needed a way to both blacklist and whitelist tokens based on a unique identifier (jti)

Before trying it out DIY, I considered using:

	<form id="contact-form" action="//formspree.io/[email protected]" method="post">
	<input type="text" name="Name" placeholder="Name" required>
	<input type="email" name="Email" placeholder="Email" required>
	<textarea name="Message" cols="30" rows="6" placeholder="Message" required></textarea>
	<!-- CONFIG -->
	<input class="hidden" type="text" name="_gotcha">
	<input type="hidden" name="_subject" value="Email Subject">
	<!-- /CONFIG -->
	<input class="submit" type="submit" value="Send message">
	</form>

	$("#action-button").click(function() {
	// supondo que voce tenha um <input id="pesquisar-nome"/>
	var inputValue = $("#pesquisar-nome").val();
	$.ajax({
	url: "/search_view/?pesquisar-nome=" + encodeURIComponent(inputValue),
	type: "get",
	success: function(data) {
	$('#results').html(data);
	}
	});

	# Sample i2of5 barcode generation.
	from reportlab.pdfgen import canvas
	from reportlab.lib.pagesizes import A4
	from reportlab.lib.units import mm
	from reportlab.graphics.barcode.common import I2of5

	c=canvas.Canvas("barcode_example.pdf",pagesize=A4)

	tb=0.254320987654 * mm # thin bar
	bh=20 * mm # bar height

	#!/bin/bash

	NAME="hello_app" # Name of the application
	DJANGODIR=/webapps/hello_django/hello # Django project directory
	SOCKFILE=/webapps/hello_django/run/gunicorn.sock # we will communicte using this unix socket
	USER=hello # the user to run as
	GROUP=webapps # the group to run as
	NUM_WORKERS=3 # how many worker processes should Gunicorn spawn
	DJANGO_SETTINGS_MODULE=hello.settings # which settings file should Django use
	DJANGO_WSGI_MODULE=hello.wsgi # WSGI module name