Redmine

These Hooks can then be used to maintain a recycle bin in Redmine.

You can already use the basic ActiveRecord callbacks on the Issue model, which include before_destroy and after_destroy callbacks. Please check the Documentation for details on how to use them. You can register your own model callbacks by adding a simple declarative model patch in your plugin.

If you still do need those Redmine hooks, please describe in more detail how they can be useful to solve the problem in a way that the standard ActiveRecord callbacks can not.