Switch to pg and modify database and env config

.env.sample

@@ -0,0 +1,11 @@
+BUNDLE_WITHOUT=test:development
+RACK_ENV=
+RAILS_ENV=
+RAILS_SKIP_MIGRATIONS=false
+RAILS_SKIP_ASSET_COMPILATION=false
+SECRET_KEY_BASE=
+RDS_USERNAME=
+RDS_DB_NAME=
+RDS_PASSWORD=
+RDS_PORT=
+RDS_HOSTNAME=

.gitignore

@@ -20,3 +20,8 @@
 .elasticbeanstalk/*
 !.elasticbeanstalk/*.cfg.yml
 !.elasticbeanstalk/*.global.yml
+
+# Environment credentials
+.env
+.env.production
+.env.staging

Gemfile

@@ -7,6 +7,8 @@ gem 'rails', '5.2.0'
 gem 'sqlite3'
 gem 'sass-rails'
 gem 'uglifier'
+gem 'pg'
+gem 'puma'
 
 group :development do
   gem 'listen'
@@ -25,3 +27,6 @@ group :test do
   gem 'rails-controller-testing'
 end
 
+group :production, :staging do
+  gem 'rails_12factor'
+end

Gemfile.lock

@@ -103,8 +103,10 @@ GEM
       mini_portile2 (~> 2.3.0)
     parser (2.5.1.2)
       ast (~> 2.4.0)
+    pg (1.1.2)
     powerpack (0.1.2)
     public_suffix (3.0.2)
+    puma (3.12.0)
     rack (2.0.5)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -130,6 +132,11 @@ GEM
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.0.4)
       loofah (~> 2.2, >= 2.2.2)
+    rails_12factor (0.0.3)
+      rails_serve_static_assets
+      rails_stdout_logging
+    rails_serve_static_assets (0.0.5)
+    rails_stdout_logging (0.0.5)
     railties (5.2.0)
       actionpack (= 5.2.0)
       activesupport (= 5.2.0)
@@ -212,8 +219,11 @@ DEPENDENCIES
   faker
   jquery-rails
   listen
+  pg
+  puma
   rails (= 5.2.0)
   rails-controller-testing
+  rails_12factor
   rspec-rails
   rubocop (~> 0.48.1)
   sass-rails

config/database.yml

@@ -1,25 +1,34 @@
-# SQLite version 3.x
-#   gem install sqlite3
-#
-#   Ensure the SQLite 3 gem is defined in your Gemfile
-#   gem 'sqlite3'
-#
 default: &default
-  adapter: sqlite3
+  adapter: postgresql
+  encoding: unicode
   pool: 5
   timeout: 5000
 
 development:
   <<: *default
-  database: db/development.sqlite3
+  database: guestbook_development
 
 # 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: guestbook_test
 
 production:
   <<: *default
-  database: db/production.sqlite3
+  encoding: unicode
+  database: <%= ENV['RDS_DB_NAME'] %>
+  username: <%= ENV['RDS_USERNAME'] %>
+  password: <%= ENV['RDS_PASSWORD'] %>
+  host: <%= ENV['RDS_HOSTNAME'] %>
+  port: <%= ENV['RDS_PORT'] %>
+
+staging:
+  <<: *default
+  adapter: postgresql
+  encoding: unicode
+  database: <%= ENV['RDS_DB_NAME'] %>
+  username: <%= ENV['RDS_USERNAME'] %>
+  password: <%= ENV['RDS_PASSWORD'] %>
+  host: <%= ENV['RDS_HOSTNAME'] %>