egelev

#!/usr/bin/env bash

function get_headphones_index() {
  echo $(pacmd list-cards | grep bluez_card -B1 | grep index | awk '{print $2}')
}

function get_headphones_mac_address() {
  local temp=$(pacmd list-cards | grep bluez_card -C20 | grep 'device.string' | cut -d' ' -f 3)
  temp="${temp%\"}"
  temp="${temp#\"}"

wosephjeber

Renaming table in Ecto migration

I recently wanted to rename a model and its postgres table in a Phoenix app. Renaming the table was simple and documented, but the table also had constraints, sequences, and indexes that needed to be updated in order for the Ecto model to be able to rely on default naming conventions. I couldn't find any examples of what this would look like but was eventually able to figure it out. For anyone else in the same situation, hopefully this example helps.

In the example below, I'm renaming the Permission model to Membership. This model belongs to a User and an Account, so it has foreign key constraints that need to be renamed.

defmodule MyApp.Repo.Migrations.RenamePermissionsToMemberships do
  use Ecto.Migration

chrismccord

Phoenix 1.4 ships with exciting new features, most notably with HTTP2 support, improved development experience with faster compile times, new error pages, and local SSL certificate generation. Additionally, our channel layer internals receiveced an overhaul, provided better structure and extensibility. We also shipped a new and improved Presence javascript API, as well as Elixir formatter integration for our routing and test DSLs.

This release requires few user-facing changes and should be a fast upgrade for those on Phoenix 1.3.x.

Install the new phx.new project generator

The mix phx.new archive can now be installed via hex, for a simpler, versioned installation experience.

To grab the new archive, simply run:

giannisp

After automatically updating Postgres to 10.0 via Homebrew, the pg_ctl start command didn't work.
The error was "The data directory was initialized by PostgreSQL version 9.6, which is not compatible with this version 10.0."

Database files have to be updated before starting the server, here are the steps that had to be followed:

# need to have both 9.6.x and latest 10.0 installed, and keep 10.0 as default
brew unlink postgresql
brew install postgresql@9.6
brew unlink postgresql@9.6
brew link postgresql

checco

--
-- Read only 
--

-- Create a group
CREATE ROLE postgres_ro_group;

-- Grant access to existing tables
GRANT USAGE ON SCHEMA public TO postgres_ro_group;
GRANT SELECT ON ALL TABLES IN SCHEMA public TO postgres_ro_group;

itsderek23

# Instruments HTTPoison calls.
#
# Example usage:
#
# defmodule Demo.Web.PageController do
#   use Demo.Web, :controller
#   alias ScoutApm.HTTPoison

#   def index(conn, _params) do
#     HTTPoison.get("https://cnn.com")

moklett

# This demonstrates that, when using async/await, a crash in the task will crash the caller
defmodule Tasker do
  def good(message) do
    IO.puts message
  end

  def bad(message) do
    IO.puts message
    raise "I'm BAD!"
  end

huoxito

# Set a different cookie key for subdomains so IE will work properly with
# session as in other browsers where cookies are only shared among the exact
# same host name by default.
# 
# e.g. visiting lol-ie.domain.com after visiting domain.com on IE will fetch
# the session / cookie from domain.com instead of fetching the one from lol-ie.domain.com
# 
class CustomCookieStore < ActionDispatch::Session::CookieStore
  def call(env)
    hostname = env['HTTP_HOST'].split(':').first

filipechagas

def compute_thing(thing)
  if thing[:foo]
    update_with_bar(thing)
    if thing[:foo][:bar]
      partial_compute(thing)
    else
      re_compute(thing)
    end
  end
end

nakedible-p

var AWS = require('aws-sdk');
var http = require('http');
var httpProxy = require('http-proxy');
var express = require('express');
var bodyParser = require('body-parser');
var stream = require('stream');

if (process.argv.length != 3) {
    console.error('usage: aws-es-proxy <my-cluster-endpoint>');
    process.exit(1);