Switch from sqlite to postgresql

Gemfile

@@ -6,7 +6,8 @@ ruby '2.4.1'
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.2.3'
 # Use sqlite3 as the database for Active Record
-gem 'sqlite3'
+#gem 'sqlite3'
+gem 'pg'
 # Use Puma as the app server
 gem 'puma', '~> 3.11'
 # Use SCSS for stylesheets

Gemfile.lock

@@ -99,6 +99,7 @@ GEM
     nio4r (2.4.0)
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
+    pg (1.1.4)
     public_suffix (3.1.1)
     puma (3.12.1)
     rack (2.0.7)
@@ -162,7 +163,6 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
-    sqlite3 (1.4.1)
     thor (0.20.3)
     thread_safe (0.3.6)
     tilt (2.0.9)
@@ -192,13 +192,13 @@ DEPENDENCIES
   commonmarker (~> 0.20)
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
+  pg
   puma (~> 3.11)
   rails (~> 5.2.3)
   sass-rails (~> 5.0)
   selenium-webdriver
   spring
   spring-watcher-listen (~> 2.0.0)
-  sqlite3
   tzinfo-data
   uglifier (>= 1.3.0)
   web-console (>= 3.3.0)

config/database.yml

@@ -1,25 +1,20 @@
-# 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
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
   timeout: 5000
+  encoding: unicode
 
 development:
   <<: *default
-  database: db/development.sqlite3
+  database: rails_development_db
 
 # 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: rails_test_db
 
 production:
   <<: *default
-  database: db/production.sqlite3
+  database: tails_production_db

config/sqlite.database.yml

@@ -0,0 +1,25 @@
+# SQLite version 3.x
+#   gem install sqlite3
+#
+#   Ensure the SQLite 3 gem is defined in your Gemfile
+#   gem 'sqlite3'
+#
+default: &default
+  adapter: sqlite3
+  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
+  timeout: 5000
+
+development:
+  <<: *default
+  database: db/development.sqlite3
+
+# 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
+
+production:
+  <<: *default
+  database: db/production.sqlite3

db/schema.rb

@@ -12,11 +12,14 @@
 
 ActiveRecord::Schema.define(version: 2019_08_25_224052) do
 
+  # These are extensions that must be enabled in order to support this database
+  enable_extension "plpgsql"
+
   create_table "active_storage_attachments", force: :cascade do |t|
     t.string "name", null: false
     t.string "record_type", null: false
-    t.integer "record_id", null: false
-    t.integer "blob_id", null: false
+    t.bigint "record_id", null: false
+    t.bigint "blob_id", null: false
     t.datetime "created_at", null: false
     t.index ["blob_id"], name: "index_active_storage_attachments_on_blob_id"
     t.index ["record_type", "record_id", "name", "blob_id"], name: "index_active_storage_attachments_uniqueness", unique: true
@@ -54,4 +57,5 @@
     t.datetime "updated_at", null: false
   end
 
+  add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
 end