db:system:change to postgresql; enabled uuid

Gemfile

@@ -5,8 +5,8 @@ ruby '2.7.1'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 6.0.3', '>= 6.0.3.1'
-# Use sqlite3 as the database for Active Record
-gem 'sqlite3', '~> 1.4'
+# Use pg as the database for Active Record
+gem 'pg', '>= 0.18', '< 2.0'
 # Use Puma as the app server
 gem 'puma', '~> 4.1'
 # Use SCSS for stylesheets

Gemfile.lock

@@ -101,6 +101,7 @@ GEM
     nio4r (2.5.2)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
+    pg (1.2.3)
     public_suffix (4.0.5)
     puma (4.3.5)
       nio4r (~> 2.0)
@@ -165,7 +166,6 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
-    sqlite3 (1.4.2)
     thor (1.0.1)
     thread_safe (0.3.6)
     tilt (2.0.10)
@@ -203,13 +203,13 @@ DEPENDENCIES
   capybara (>= 2.15)
   jbuilder (~> 2.7)
   listen (~> 3.2)
+  pg (>= 0.18, < 2.0)
   puma (~> 4.1)
   rails (~> 6.0.3, >= 6.0.3.1)
   sass-rails (>= 6)
   selenium-webdriver
   spring
   spring-watcher-listen (~> 2.0.0)
-  sqlite3 (~> 1.4)
   turbolinks (~> 5)
   tzinfo-data
   web-console (>= 3.3.0)

config/application.rb

@@ -28,5 +28,9 @@ class Application < Rails::Application
     # Application configuration can go into files in config/initializers
     # -- all .rb files in that directory are automatically loaded after loading
     # the framework and any gems in your application.
+
+    config.generators do |g|
+      g.orm :active_record, primary_key_type: :uuid
+    end
   end
 end

config/database.yml

@@ -1,25 +1,85 @@
-# SQLite. Versions 3.8.0 and up are supported.
-#   gem install sqlite3
+# PostgreSQL. Versions 9.3 and up are supported.
 #
-#   Ensure the SQLite 3 gem is defined in your Gemfile
-#   gem 'sqlite3'
+# Install the pg driver:
+#   gem install pg
+# On macOS with Homebrew:
+#   gem install pg -- --with-pg-config=/usr/local/bin/pg_config
+# On macOS with MacPorts:
+#   gem install pg -- --with-pg-config=/opt/local/lib/postgresql84/bin/pg_config
+# On Windows:
+#   gem install pg
+#       Choose the win32 build.
+#       Install PostgreSQL and put its /bin directory on your path.
+#
+# Configure Using Gemfile
+# gem 'pg'
 #
 default: &default
-  adapter: sqlite3
+  adapter: postgresql
+  encoding: unicode
+  # For details on connection pooling, see Rails configuration guide
+  # https://guides.rubyonrails.org/configuring.html#database-pooling
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
-  timeout: 5000
 
 development:
   <<: *default
-  database: db/development.sqlite3
+  database: roam_on_rails_development
+
+  # The specified database role being used to connect to postgres.
+  # To create additional roles in postgres see `$ createuser --help`.
+  # When left blank, postgres will use the default role. This is
+  # the same name as the operating system user that initialized the database.
+  #username: roam_on_rails
+
+  # The password associated with the postgres role (username).
+  #password:
+
+  # Connect on a TCP socket. Omitted by default since the client uses a
+  # domain socket that doesn't need configuration. Windows does not have
+  # domain sockets, so uncomment these lines.
+  #host: localhost
+
+  # The TCP port the server listens on. Defaults to 5432.
+  # If your server runs on a different port number, change accordingly.
+  #port: 5432
+
+  # Schema search path. The server defaults to $user,public
+  #schema_search_path: myapp,sharedapp,public
+
+  # Minimum log levels, in increasing order:
+  #   debug5, debug4, debug3, debug2, debug1,
+  #   log, notice, warning, error, fatal, and panic
+  # Defaults to warning.
+  #min_messages: notice
 
 # Warning: The database defined as "test" will be erased and
 # re-generated from your development database when you run "rake".
 # Do not set this db to the same as development or production.
 test:
   <<: *default
-  database: db/test.sqlite3
+  database: roam_on_rails_test
 
+# As with config/credentials.yml, you never want to store sensitive information,
+# like your database password, in your source code. If your source code is
+# ever seen by anyone, they now have access to your database.
+#
+# Instead, provide the password as a unix environment variable when you boot
+# the app. Read https://guides.rubyonrails.org/configuring.html#configuring-a-database
+# for a full rundown on how to provide these environment variables in a
+# production deployment.
+#
+# On Heroku and other platform providers, you may have a full connection URL
+# available as an environment variable. For example:
+#
+#   DATABASE_URL="postgres://myuser:mypass@localhost/somedatabase"
+#
+# You can use this database configuration with:
+#
+#   production:
+#     url: <%= ENV['DATABASE_URL'] %>
+#
 production:
   <<: *default
-  database: db/production.sqlite3
+  database: roam_on_rails_production
+  username: roam_on_rails
+  password: <%= ENV['ROAM_ON_RAILS_DATABASE_PASSWORD'] %>

db/migrate/20200613070621_enable_uuid.rb

@@ -0,0 +1,5 @@
+class EnableUuid < ActiveRecord::Migration[6.0]
+  def change
+    enable_extension 'pgcrypto' unless extension_enabled?('pgcrypto')
+  end
+end

db/schema.rb

@@ -0,0 +1,19 @@
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# This file is the source Rails uses to define your schema when running `rails
+# db:schema:load`. When creating a new database, `rails db:schema:load` tends to
+# be faster and is potentially less error prone than running all of your
+# migrations from scratch. Old migrations may fail to apply correctly if those
+# migrations use external dependencies or application code.
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema.define(version: 2020_06_13_070621) do
+
+  # These are extensions that must be enabled in order to support this database
+  enable_extension "pgcrypto"
+  enable_extension "plpgsql"
+
+end