Tom Meiselbach tmthn

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

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	// assets/js/app.js

	// ...
	import Pickr from "./pickr"

	const hooks = {
	Pickr
	}

	// ...

	<?php

	const MONTH = "Y-m"; // 2000-01
	const DAY = "Y-m-d"; // 2000-01-01
	const HALF_DAY = "Y-m-d-A"; // 2000-01-01-AM
	const HOUR = "Y-m-d-H"; // 2000-01-01-24
	const MINUTE = "Y-m-d-H-i"; // 2000-01-01-24-60

	class Cache {

	# to run:
	# > elixir --no-halt udp_server.exs
	# to test:
	# > echo "hello world" \| nc -u -w0 localhost 2052
	# > echo "quit" \| nc -u -w0 localhost 2052

	# Let's call our module "UDPServer"
	defmodule UDPServer do
	# Our module is going to use the DSL (Domain Specific Language) for Gen(eric) Servers
	use GenServer

	<?php

	/**
	* Class Template - a very simple PHP class for rendering PHP templates
	*/
	class Template {

	/**
	* Location of expected template
	*

	#!/usr/bin/env ruby

	require "openssl"
	require "time"

	begin
	require "origami"
	rescue LoadError
	abort "origami not installed: gem install origami"
	end

	<?php

	/**
	* -----------------------------------------------------------------------------------------
	* Based on `https://github.com/mecha-cms/mecha-cms/blob/master/system/kernel/converter.php`
	* -----------------------------------------------------------------------------------------
	*/

	// HTML Minifier
	function minify_html($input) {

	rabbitmqctl add_user test test
	rabbitmqctl set_user_tags test administrator
	rabbitmqctl set_permissions -p / test "." "." ".*"