henrik

# TODO:
# Runner like https://github.com/elixir-lang/ecto/blob/master/lib/ecto/migration.ex (does it have state?)

defmodule Ecto.Runner do
  def start_command({:create, table}) do
    IO.puts "create table: #{table}"
  end

  def subcommand({:add, column, type}) do
    IO.puts "add column: #{column}(#{type})"

garybernhardt

This document has moved!

It's now here, in The Programmer's Compendium. The content is the same as before, but being part of the compendium means that it's actively maintained.

bsedat

FROM elixir:1.4.5 as asset-builder-mix-getter

ENV HOME=/opt/app

RUN mix do local.hex --force, local.rebar --force
# Cache elixir deps
COPY config/ $HOME/config/
COPY mix.exs mix.lock $HOME/
COPY apps/myproject_web/mix.exs $HOME/apps/myproject_web/
COPY apps/myproject_web/config/ $HOME/apps/myproject_web/config/

LostKobrakai

defmodule DateTimeGenerators do
  use ExUnitProperties

  @time_zones ["Etc/UTC"]

  def date do
    gen all year <- integer(1970..2050),
            month <- integer(1..12),
            day <- integer(1..31),
            match?({:ok, _}, Date.from_erl({year, month, day})) do

almoraes

files:
  "/etc/logrotate.elasticbeanstalk.hourly/logrotate.elasticbeanstalk.dockerlogs.conf":
    mode: "000644"
    owner: root
    group: root
    content: |
        /var/lib/docker/containers/*/*.log {
        size 100M
        rotate 14
        missingok

opsb

defmodule Util.Ecto do
  def export(model = %{__meta__: _meta, __struct__: _struct}) when is_map(model) do
    stripped =
      model
      |> Map.from_struct()
      |> Map.delete(:__meta__)

    associations = model.__struct__.__schema__(:associations)

    Enum.reduce(associations, stripped, fn assoc, model ->

ibarchenkov

defmodule MyApp.Factory do
  use ExUnitProperties
  alias MyApp.{Repo, User, Comment}
  
  ### Generators
  
  def generator(:user) do
    gen all name <- string(:alphanumeric, min_length: 2),
            email <- generator(:email),
            age <- integer(10..130) do

bruce

GraphQL document is parsed:

• Lexer: https://github.com/absinthe-graphql/absinthe/blob/master/lib/absinthe/lexer.ex
• Parser (Yecc): https://github.com/absinthe-graphql/absinthe/blob/master/src/absinthe_parser.yrl

This returns a tree of Absinthe.Language nodes (structs), effectively the AST:

• https://github.com/absinthe-graphql/absinthe/tree/master/lib/absinthe/language

This tree is converted to a tree of Absinthe.Blueprint nodes (structs):

• https://github.com/absinthe-graphql/absinthe/tree/master/lib/absinthe/blueprint

rugyoga

Using Elixir releases and multi-stage Docker files to simplify Phoenix deployment

This repo is my experiment in deploying a basic Phoenix app using the release feature from elixir 1.9 (https://elixir-lang.org/blog/2019/06/24/elixir-v1-9-0-released/) and docker, via a multi-stage Dockerfile (https://docs.docker.com/develop/develop-images/multistage-build/) leveraging bitwalker's docker images for Elixir and Phoenix.

Step 1: Install Elixir 1.9.1 (and Erlang)

The simplest way to manage Elixir versions is to use asdf.

rhnonose

defmodule AbsintheCollector do
  @moduledoc """
  Module to collect absinthe telemetry events
  """
  use Prometheus.Metric
  require Prometheus.Contrib.HTTP

  @events [
    [:absinthe, :resolve, :field, :start],
    [:absinthe, :resolve, :field],