Make the application multi-tenant

app/channels/application_cable/connection.rb

@@ -2,7 +2,7 @@ module ApplicationCable
   class Connection < ActionCable::Connection::Base
     identified_by :current_user
 
-    def connect
+    tenanted_connection do
       set_current_user || reject_unauthorized_connection
     end
 

app/models/application_record.rb

@@ -1,3 +1,4 @@
 class ApplicationRecord < ActiveRecord::Base
   primary_abstract_class
+  tenanted
 end

bin/dev

@@ -1,6 +1,5 @@
 #!/usr/bin/env sh
 
-echo "Starting Fizzy on http://localhost:3006"
-echo "Login with david@37signals.com using secret123456"
+echo "Starting Fizzy on http://development-tenant.fizzy.localhost:3006"
 
 SOLID_QUEUE_IN_PUMA=true exec ./bin/rails server -p 3006

config/database.yml

@@ -12,7 +12,8 @@ default: &default
 development:
   primary:
     <<: *default
-    database: storage/development.sqlite3
+    database: storage/development-tenanted/%{tenant}/main.sqlite3
+    tenanted: true
   cable:
     <<: *default
     database: storage/development_cable.sqlite3
@@ -31,12 +32,14 @@ development:
 # Do not set this db to the same as development or production.
 test:
   <<: *default
-  database: storage/test.sqlite3
+  database: storage/test-tenanted/%{tenant}/main.sqlite3
+  tenanted: true
 
 production:
   primary:
     <<: *default
-    database: storage/production.sqlite3
+    database: storage/production-tenanted/%{tenant}/main.sqlite3
+    tenanted: true
   cable:
     <<: *default
     database: storage/production_cable.sqlite3

config/initializers/tenanting.rb

@@ -0,0 +1,3 @@
+Rails.application.configure do |config|
+  config.middleware.use ActiveRecord::Tenanted::TenantSelector, "ApplicationRecord", ->(request) { request.subdomain }
+end

config/storage.yml

@@ -1,10 +1,12 @@
 test:
   service: Disk
-  root: <%= Rails.root.join("tmp/storage") %>
+  root: <%= Rails.root.join("tmp/storage/%{tenant}") %>
+  tenanted: true
 
 local:
   service: Disk
-  root: <%= Rails.root.join("storage", "files") %>
+  root: <%= Rails.root.join("storage", "files", "%{tenant}") %>
+  tenanted: true
 
 # Use bin/rails credentials:edit to set the AWS secrets (as aws:access_key_id|secret_access_key)
 # amazon:

test/controllers/uploads_controller_test.rb

@@ -11,7 +11,7 @@ class UploadsControllerTest < ActionDispatch::IntegrationTest
     end
 
     assert_response :success
-    assert_equal ActiveStorage::Attachment.last.slug_url(host: "www.example.com", port: nil), response.parsed_body["fileUrl"]
+    assert_equal ActiveStorage::Attachment.last.slug_url(host: "#{ApplicationRecord.current_tenant}.example.com", port: nil), response.parsed_body["fileUrl"]
     assert_equal "image/jpeg", response.parsed_body["mimetype"]
     assert_equal "moon.jpg", response.parsed_body["fileName"]
   end