Rails 4, How to have a callback to a custom error?

Question

Below are some sudo code:

exceptions.rb

module Exceptions
  class CriticalError < StandardError
    # Question: How do I attach a callback to this error? Whenever this error is raised, I also want it to ping_me() as a after callback
    def ping_me()
      ...
    end
  end
end

Desired outcome:

raise Exceptions::CriticalError # after a callback to this error being raised, it will run the ping_me() method

Question:

How do I do this in rails? I saw a rescue_from method but I think that is only available inside a controller

Thank you very much!

Answer 1

Ok, I figured this out

module Exceptions
  class CriticalError < StandardError
    def initialize(error_message)
      ping_me()
      super(error_message)
    end

    def ping_me()
      ....
    end
  end
end


raise Exceptions::CriticalError.new("something went wrong!")