Use ULID for user primary key

BREAKING CHANGE: This change breaks all sorts of rules by editing
migrations. This would not be normally recommended but we’re allowing an
exception for this new feature which is still behind a feature flag.

Adds the sqlite-ulid gem
Updates database.yml to enable support for the new extension
Modifies existing migration to make user primary key ULIDs and updates
the type for user foreign keys

Credit for implementation to
https://fractaledmind.github.io/2023/09/22/enhancing-rails-sqlite-ulid-primary-keys/

Author: rossta

Gemfile

@@ -8,6 +8,7 @@ gem "rails", "~> 7.1", group: [:default, :wasm] # Bundle edge Rails instead: gem
 gem "puma", ">= 5.0" # Use the Puma web server [https://github.com/puma/puma]
 gem "sqlite3", force_ruby_platform: true # Use sqlite3 as the database for Active Record [https://github.com/sparklemotion/sqlite3-ruby]
 gem "activerecord-enhancedsqlite3-adapter" # Enhanced SQLite3 adapter for Active Record [https://github.com/fractaledmind/activerecord-enhancedsqlite3-adapter]
+gem "sqlite-ulid" # A SQLite extension for generating and working with ULIDs [https://github.com/asg017/sqlite-ulid]
 
 gem "solid_cache" # A database-backed ActiveSupport::Cache::Store [https://github.com/rails/solid_cache]
 gem "solid_queue" # A database-backed ActiveJob backend [https://github.com/basecamp/solid_queue]

Gemfile.lock

@@ -457,6 +457,8 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
+    sqlite-ulid (0.2.1-arm64-darwin)
+    sqlite-ulid (0.2.1-x86_64-linux)
     sqlite3 (1.7.3)
       mini_portile2 (~> 2.8.0)
     standard (1.35.1)
@@ -565,6 +567,7 @@ DEPENDENCIES
   sitepress-rails
   solid_cache
   solid_queue
+  sqlite-ulid
   sqlite3
   standard
   stimulus-rails

config/database.yml

@@ -8,6 +8,8 @@ default: &default
   adapter: sqlite3
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 3 } %>
   timeout: 5000
+  extensions:
+    - sqlite_ulid
 
 development:
   primary:

db/migrate/20240605030240_create_users.rb

@@ -1,6 +1,7 @@
 class CreateUsers < ActiveRecord::Migration[7.1]
   def change
-    create_table :users do |t|
+    create_table :users, force: true, id: false do |t|
+      t.primary_key :id, :string, default: -> { "ULID()" }
       t.string :email, null: false
       t.string :password_digest, null: false
 

db/migrate/20240607120410_create_email_exchanges.rb

@@ -2,7 +2,7 @@ class CreateEmailExchanges < ActiveRecord::Migration[7.1]
   def change
     create_table :email_exchanges do |t|
       t.string :email, null: false
-      t.references :user, null: false, foreign_key: true
+      t.references :user, null: false, foreign_key: true, type: :string
       t.string :status, null: false, default: 0 # pending
 
       t.timestamps

db/migrate/20240609132723_create_notifications.rb

@@ -3,7 +3,7 @@ def change
     create_table :notifications do |t|
       t.string :type
       t.references :notification_event, null: false, foreign_key: true
-      t.references :recipient, polymorphic: true, null: false, type: :bigint
+      t.references :recipient, polymorphic: true, null: false, type: :string
       t.datetime :read_at
       t.datetime :seen_at
 

db/schema.rb

@@ -33,12 +33,14 @@ def render_page(*, **)
   end
 
   it "renders contents of file by heterogeneous line number collection" do
-    page = render_page(CodeBlock::AppFile.new("config/database.yml", lines: [7..8, 58]))
+    page = render_page(CodeBlock::AppFile.new("config/database.yml", lines: [7..8, 60]))
     expect(page).to have_content(<<~YAML.strip)
       default: &default
         adapter: sqlite3
     YAML
 
+    puts page
+
     expect(page).to have_content("database: storage/production/data.sqlite3")
     expect(page).not_to have_content("database: storage/development/data.sqlite3")
   end