Mike Owens mieko

Keybase proof

I hereby claim:

I am mieko on github.
I am mieko (https://keybase.io/mieko) on keybase.
I have a public key whose fingerprint is 2AEC C9D5 4B21 DD55 6B42 214D 22C1 BE53 C942 F1EE

To claim this, I am signing this object:

This is an example of how to configure nginx to allow ActionCable WebSocket connections to use the same host as your primary site. For example, instead of cable.myapp.dev, you can use myapp.dev/_c/.

In my case, we have a multi-tenanted environment, e.g., bob.myapp.dev and jim.myapp.dev. This lets the ActionCable connection still use the Host: header to select a tenant, and use normal cookies for user identification. wss://bob.myapp.dev/_c/ is authorized as normal. It also piggybacks off of whatever TLS setup is available.

Rails Quick Console Finders

I use rails console a lot for poking around at models. Exploratory style. A LOT.

I always have seeded data, and typing User.find_by(slug: 'administrator') or User.friendly.find('administrator') gets really annoying.

This shit gets ridiculous in a REPL environment:

	{
	"$schema": "http://json-schema.org/draft-07/schema",
	"title": "RuboCop configuration schema",
	"description": "Schema for RuboCop configuration files (e.g. .rubocop.yml), intended for helping IDEs provide autocompletion and validation.",
	"type": "object",
	"additionalProperties": false,
	"definitions": {
	"inherit_mode": {
	"type": "object",
	"minProperties": 1,

	require "rack/utils"

	# Rails < 4.1 serialized sessions with Marshal, which could distinguish "html_safe" flash strings
	# from unsafe strings because it encoded actual ActiveSupport::SafeBuffer objects. So when the
	# flash message came back from the client, its "safe" status was preserved, and it was rendered
	# correctly under both circumstances.
	#
	# This same "magic" ability is also why Rails moved away from it: multiple CVEs due to arbitrary
	# object creation. But regardless, that was a really nice trick.
	#

	require "shellwords"

	def terminal_width
	%x(tput cols).chomp.to_i
	rescue StandardError
	80
	end

	def sql_table_command(model_class)
	table_name = model_class.table_name

	# Tries to find a parent directory containing a file: "$1"
	find-up() {
	local path=$(pwd)
	while [[ -n "$path" && ! -e "$path/$1" ]]; do
	path=${path%/*}
	done
	echo "$path"
	}

	try-binstub() {

	Copyright 2016 Mike Owens

	Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
	files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
	modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
	Software is furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
	Software.

	class Switch < BasicObject
	def initialize(&body)
	fail ArgumentError, 'switch body required' unless body

	@cases = []
	@receiver = body.binding.receiver
	instance_eval(&body)
	end

	def given(*spec, &block)

	class MarchingSquares
	STATE = { "0000" => :r, "1100" => :r, "0011" => :l, "1110" => :r,
	"0100" => :r, "1000" => :u, "1011" => :u, "1001" => :u,
	"0101" => :d, "1010" => :u, "0111" => :l, "0110" => :l,
	"0001" => :d, "0010" => :l, "1101" => :d, "1111" => :r }

	def self.find_shape(grid, w, h)
	edge_pos = grid.index('1')
	return nil if edge_pos.nil?