Explain reason for eager loading

rails · Dec 18, 2015 · bced489 · bced489
1 parent 82f5dc5
commit bced489
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/railties/lib/rails/generators/rails/app/templates/config.ru.tt b/railties/lib/rails/generators/rails/app/templates/config.ru.tt
@@ -3,6 +3,7 @@
 require ::File.expand_path('../config/environment', __FILE__)
 
 <%- unless options[:skip_action_cable] -%>
+# Action Cable uses EventMachine which requires that all classes are loaded in advance
 Rails.application.eager_load!
 require 'action_cable/process/logging'
 <%- end -%>