How to catch ActionController::RoutingError in Rails when rendering images in development?

Question

Ruby on Rails

There is an application in which old images are constantly cleared. When displaying items with removed images, ActionController::RoutingError pops up, which are difficult to catch when testing.
How to catch ActionController::RoutingError when rendering images in Rails and return default instead of missing images?
Exceptions themselves occur during tests, and it is very difficult to catch them by simply catching exceptions. Used by Rspec and Capybara.

Answer 1

From rails, in general, no way, because. images in production should be served by nginx. Rails has a production setting that forcibly disables static feedback

# Disable Rails's static asset server (Apache or nginx will already do this)
config.serve_static_files = false

If, for some reason, you still give the static rails, which is categorically wrong, then you can make an exception interceptor in the ApplicationController
and in it to check if the url of the image is or not.