joakimk

If you're seeing this error, try heroku ps:scale web=0 then import the database again and run heroku ps:scale web=1 afterwards. Found nothing on google for this error, so posting this gist with the solution that worked for me. Could have been a temporary error too.

joakimk

import {Socket} from "phoenix"

let socket = new Socket("/socket", { params: {} })
socket.connect()

let channel = socket.channel("updates", {})
channel.join()

// Reload the app if it's out of date when it joins the websocket
let revision = null

joakimk

More info

• https://github.com/eeue56/elm-for-web-developers#can-i-enter-html-as-a-string
• https://github.com/evancz/elm-html/issues/54

joakimk

Writing this down in case it's useful for someone.

The reason why my oculus had inverted positional tracking (when I lean in, it moved me backwards in the 3d scene) was that my camera cable was broken. Ensure the little blue light is on when using the rift.

joakimk

What type of app?

A web UI, maybe a phoenix app, or something simpler.

Basic version: list failed jobs, allow you to retry or delete them.

Toniq.failed_jobs Toniq.retry(job) Toniq.delete(job)

joakimk

defmodule BroadcastChannel do
  use Phoenix.Channel

  def join(channel, auth_message, socket) do
    socket = assign(socket, :client_version, auth_message["client_version"])
    ClientStats.join(channel, socket.assigns[:client_version])
    broadcast_stats
    {:ok, socket}
  end
  

joakimk

# In this example we're running jobs of some kind, and waiting for events if they finish okay or fail.

defmodule JobEvent do
  def start_link do
    {:ok, pid} = GenEvent.start_link(name: __MODULE__)
  end

  defmodule MessageForwarder do
    use GenEvent

joakimk

For us this turned out to be that we had cached html generated by the rails 3 app that had the ASCII-8BIT encoding, clearing all html caches fixed this.

To arrive at this, we first added this debug code:

# if you reuse this: ensure it matches the method in your version of rails
# as the method is overwritten by this monkeypatch

# config/initializers/debug_encoding_errors.rb
ActiveSupport::SafeBuffer

joakimk

If you have a body like this:

payload={"data": "5 %"}

Then nginx will most likely give you a 400 bad request error.

To get around this, encode the json with "x-www-urlencoded" encoding.

A web framework like rails will transparently decode "x-www-urlencoded" for you.

joakimk

# Rails
alias sc='bundle exec rails console'
alias ss="bundle exec rails server"
alias rs='rake spec'
alias rsu='rake spec:unit'
alias rsua='rake spec:unit:all'
alias rsa='rake spec:all'
alias mig='rake db:migrate'
alias rsp='rake testbot:spec'
alias ref='script/refresh'