Allow Capybara test server IP in HostAuthorization

config/application.rb.dist

@@ -47,13 +47,13 @@ module FixinMe
     # SETUP: Below settings need to be updated on a per-installation basis.
     #
     # Set host to be used by links generated in mailer templates.
-    config.action_mailer.default_url_options = {host: 'localhost', :protocol => 'https'}
+    config.action_mailer.default_url_options = {host: 'localhost', protocol: 'https'}
     # https://guides.rubyonrails.org/configuring.html#config-action-mailer-delivery-method
     config.action_mailer.delivery_method = :sendmail
 
     # List of hosts this app is available at.
     # https://guides.rubyonrails.org/configuring.html#actiondispatch-hostauthorization
-    config.hosts += ['localhost', IPAddr.new('1.2.3.4/32'), 'example.com']
+    config.hosts |= ['localhost']
 
     # Email address of admin account
     config.admin = 'admin@localhost'

config/environments/test.rb

@@ -32,7 +32,8 @@ Rails.application.configure do
   config.action_mailer.delivery_method = :test
 
   # Set host to be used by links generated in mailer templates.
-  config.action_mailer.default_url_options = { host: 'localhost', protocol: 'http' }
+  config.action_mailer.default_url_options = {host: Capybara.server_host,
+                                              protocol: 'http'}
 
   # Print deprecation notices to the stderr.
   config.active_support.deprecation = :stderr
@@ -46,5 +47,8 @@ Rails.application.configure do
   # Raise error when a before_action's only/except options reference missing actions.
   config.action_controller.raise_on_missing_callback_actions = true
 
+  # Allow Capybara application server IP
+  config.hosts |= [IPAddr.new(Capybara.server_host)]
+
   config.log_level = :info
 end