monkey patches to a method that exists in a plugin

rubyonrails-talk
1

Say I have a plugin like so:

class Plugin   def do_something      do_thing :one      do_something_else      do_thing :two   end end

If I want to wrap the call to do_something_else in a begin/rescue block, then it would seem that I need to either hack the plugin in vendor/ or put a patch in lib/ that copies a portion of do_something. Either way, it seems I lose on maintainability.

Is there a convention/method for monkey patching existing methods in plugins in these situations?

Thanks, Tom Macklin

2

Say I have a plugin like so:

class Plugin def do_something     do_thing :one     do_something_else     do_thing :two end end

If I want to wrap the call to do_something_else in a begin/rescue block, then it would seem that I need to either hack the plugin in vendor/ or put a patch in lib/ that copies a portion of do_something. Either way, it seems I lose on maintainability.

The mighty alias_method_chain (which is really just 2 calls to
alias_method) can work here

class Plugin    def do_something_else_with_rescue      begin        do_something_else_without_rescue      rescue ...      end    end    alias_method_chain :do_something_else, :rescue end