How to catch all internal exceptions of the RoR framework?

Question

Ruby on Rails

Is there some way to only catch internal exceptions that are used by the RoR framework itself, but not by other frameworks? Let's say ActionController::RoutingError, and many others. Maybe they have a common ancestor?

Answer 1

As for the ancestors, using the ancestors method, you can suggest that the ActionController::RoutingError has a base rail class ActionController::ActionControllerError (which already goes back to the ruby ​​StandardError).

2.3.1 :029 > ActionController::RoutingError.ancestors
 => [ActionController::RoutingError, 
ActionController::ActionControllerError, 
StandardError, Exception, ActiveSupport::Dependencies::Blamable, 
Object, PP::ObjectMixin, ActiveSupport::Dependencies::Loadable, 
V8::Conversion::Object, 
JSON::Ext::Generator::GeneratorMethods::Object, 
Kernel, 
BasicObject]

But I'm sure that other Rails components have their own parent exception classes, and maybe even more than one. For example, ActiveRecord has ActiveRecord::ActiveRecordError.
You may have to go through the rails sources and look for classes that inherit from StandardError.