Norbert Wójtowicz pithyless

Install Python

$ brew install readline sqlite gdbm
$ brew install python --universal --framework
$ python --version
Python 2.7

Symlinks...

Model + Form validations

Some of Django's choices on how to handle data integrity are wrong, or at the very least, unexpected to the uninitiated developers. I'm not here to pass judgement; like many people, I'd just like to get back to doing real work. Some notes on how to stay safe in Django:

What should I know?

Django now has both Form validations and Model validations
Django used to only have Form validations
Form’s is_valid() performs model validation automatically
full_clean() is never actually called by Django (see ticket #13100)

Carrierwave recommends overriding store_dir in the uploader, but it only gives you a way to modify the directory name, not the whole path with the file name. Overriding store_path let's you modify the entire path.

def store_path(for_file = filename)
  self.model.class.name.underscore.pluralize + "/" + self.model.slug + "/" + (version_name || :original).to_s + ".jpg"
end

This is the original:

	<!doctype html >
	<html lang="en">
	<head>
	<meta charset="utf-8" />
	<title></title>
	</head>
	<body>
	<nav></nav>
	</body>
	</html>

	require 'flog'
	require 'flog_task'
	require 'flay'
	require 'flay_task'
	require 'roodi'
	require 'roodi_task'

	FlogTask.new :flog, SOME_NUMBER_HERE, %w[app lib]
	FlayTask.new :flay, OTHER_NUMBER_HERE, %w[app lib]
	RoodiTask.new 'roodi', ['app/*/.rb', 'lib/*/.rb']

	require 'active_record'
	require "#{Rails.root}/app/models/user"

	describe User do
	it "does something sweet"
	it "does something cool"
	end

	// jQuery Headers support for $.ajax

	$.ajax({
	beforeSend: function(xhrObj){
	xhrObj.setRequestHeader("Content-Type","application/json");
	xhrObj.setRequestHeader("Accept","application/json");
	}
	type: "POST",
	url: "/article",
	processData: false,

	One time:

	git remote add upstream [email protected]:foo/bar.git
	git fetch upstream
	git checkout -b upstream upstream/master

	Each time you want to update:

	git checkout upstream
	git pull

	#!/bin/sh

	brew install python scons boost exiv2
	curl -O http://launchpadlibrarian.net/83595798/pyexiv2-0.3.2.tar.bz2
	tar xjvf pyexiv2-0.3.2.tar.bz2
	cd pyexiv2-0.3.2

	# https://answers.launchpad.net/pyexiv2/+question/140742
	echo "env['FRAMEWORKS'] += ['Python']" >> src/SConscript

	# Do you ever define #method_missing and forget #respond_to? I sure
	# do. It would be nice if we could do them both at the same time.

	module MatchMethodMacros
	def match_method(matcher, &method_body)
	mod = Module.new do
	define_method(:method_missing) do \|method_name, *args\|
	if matcher === method_name.to_s
	instance_exec(method_name, *args, &method_body)
	else