Paul Smith paulcsmith

Crystal, Ruby, Elixir and design lover. Creator of Lucky, Avram, and Bamboo. Co-creator of ExMachina.

paulcsmith / bamboo_assertions.ex

Created January 23, 2016 03:15

Bamboo assert_email_delivered/1 function

	# Something like this might make testing simpler
	def assert_email_delivered(email) do
	email = email \|> Bamboo.Mailer.normalize_addresses
	assert_received({:delivered_bamboo_email, ^email})
	end

paulcsmith / layout.html.eex

Last active January 29, 2016 03:59

Render title and meta tags in Phoenix

	<head>
	<!-- you could put a helper in the Layout View but it's probably not necessary -->
	<%= render_existing(@view_module, "seo." <> @view_template, assigns) \|\| render("default_seo.html") %>
	</head>

paulcsmith / changed.ex

Last active February 2, 2016 17:33

Idea for check whether something changed from one value to another in a changeset

	changeset \|> changed?(:status, from: "pending", to: "canceled")
	changeset \|> changed?(:status, from: "attending") # for checking if it changed, but we don't care what it changed to

	def changed?(changeset, field, from: from, to: to) do
	Ecto.Changeset.get_field(changeset, field) == from
	&& booking_changeset.changes[field] == to
	end

paulcsmith / Filtering params.ex

Last active February 4, 2016 16:55

Building queries using plain functions

	def index(conn, params) do
	Post
	\|> filter_upcoming(params)
	\|> filter_attributes(params, whitelist: ~w(title body)
	\|> filter_timespan(params)

	# Or simplify it if it's used in multiple controllers
	Post \|> filter_post_params(params)
	end

paulcsmith / time.ex

Last active February 4, 2016 20:32

Casting/Converting time zones

	"timestamp_with_timezone"
	\|> Timex.DateTime.parse("{ISO}")
	\|> Timex.DateConvert.to_erlang_datetime
	# You probably don't need this next line for most things in Ecto.
	# Changesets and queries automatically cast erlang timestamps
	\|> Ecto.DateTime.from_erl

paulcsmith / changeset.ex

Created February 11, 2016 22:19

	defmodule MyApp.Changeset do
	def cast(model_or_changeset, :empty, required, optional) do
	Ecto.Changeset.cast(model_or_changeset, :empty, required, optional)
	end

	def cast(model_or_changeset, params, required, optional) do
	param_keys = params \|> Map.keys \|> Enum.map(&to_string/1)
	allowed_params = (required ++ optional) \|> Enum.map(&to_string/1)
	disallowed_params = param_keys -- allowed_params

paulcsmith / gist:41f22e8210efa028dda2

Created February 13, 2016 18:54

Tracing function calls in Elixir with dbg

paulcsmith / brunch-config.js

Created April 27, 2016 03:42

Phoenix brunch set up

	var bourbonPath = require("bourbon").includePaths[0];

	exports.config = {
	// See http://brunch.io/#documentation for docs.
	files: {
	javascripts: {
	joinTo: "js/app.js"

	// To use a separate vendor.js bundle, specify two files path
	// https://github.com/brunch/brunch/blob/stable/docs/config.md#files

paulcsmith / mime type of file

Created June 22, 2016 16:54

How to get mime type for a file

	$ file -I Makefile
	Makefile: text/x-makefile; charset=us-ascii

paulcsmith / test.exs

Last active July 13, 2016 16:39

ExMachina 2.0?

	defmodule MyApp.Factory do
	def user_factory do
	%User{
	email: "[email protected]",
	name: "Paul"
	}
	end
	end

	# Makes it easy to organize factories however you want