Update to Rails 8.0: config/environments/development.rb

Author: yasulab

config/environments/development.rb

@@ -3,9 +3,7 @@
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
-  # In the development environment your application's code is reloaded any time
-  # it changes. This slows down response time but is perfect for development
-  # since you don't have to restart the web server when you make code changes.
+  # Make code changes take effect immediately without server restart.
   config.enable_reloading = true
 
   # Do not eager load code on boot.
@@ -17,53 +15,47 @@
   # Enable server timing.
   config.server_timing = true
 
-  # Enable/disable caching. By default caching is disabled.
-  # Run rails dev:cache to toggle caching.
+  # Enable/disable Action Controller caching. By default Action Controller caching is disabled.
+  # Run rails dev:cache to toggle Action Controller caching.
   if Rails.root.join("tmp/caching-dev.txt").exist?
     config.action_controller.perform_caching = true
     config.action_controller.enable_fragment_cache_logging = true
-
-    config.cache_store = :memory_store
-    config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{2.days.to_i}" }
+    config.public_file_server.headers = { "cache-control" => "public, max-age=#{2.days.to_i}" }
   else
     config.action_controller.perform_caching = false
-
-    config.cache_store = :null_store
   end
 
+  # Change to :null_store to avoid any caching.
+  config.cache_store = :memory_store
+
   # Store uploaded files on the local file system (see config/storage.yml for options).
   config.active_storage.service = :local
 
   # Don't care if the mailer can't send.
   config.action_mailer.raise_delivery_errors = false
 
-  # Disable caching for Action Mailer templates even if Action Controller
-  # caching is enabled.
+  # Make template changes take effect immediately.
   config.action_mailer.perform_caching = false
+
+  # Set localhost to be used by links generated in mailer templates.
   config.action_mailer.default_url_options = { host: "localhost", port: 3000 }
   config.action_mailer.delivery_method = :letter_opener_web
 
   # Print deprecation notices to the Rails logger.
   config.active_support.deprecation = :log
 
-  # Raise exceptions for disallowed deprecations.
-  config.active_support.disallowed_deprecation = :raise
-
-  # Tell Active Support which deprecation messages to disallow.
-  config.active_support.disallowed_deprecation_warnings = []
-
   # Raise an error on page load if there are pending migrations.
   config.active_record.migration_error = :page_load
 
   # Highlight code that triggered database queries in logs.
   config.active_record.verbose_query_logs = true
 
+  # Append comments with runtime information tags to SQL queries in logs.
+  config.active_record.query_log_tags_enabled = true
+
   # Highlight code that enqueued background job in logs.
   config.active_job.verbose_enqueue_logs = true
 
-  # Suppress logger output for asset requests.
-  config.assets.quiet = true
-
   # Raises error for missing translations.
   # config.i18n.raise_on_missing_translations = true