DataMapper ORM v1.8.2

[eluser]WanWizard[/eluser]
To start with a general remark: this is not really generic functionality that should belong in Datamapper. It's specific to your case. Best way to implemented is to create a base model that extends Datamapper, add your specific functionality to it, and have all your models extend this base model instead of Datamapper.

2) and 3) can be solved by overloading the save() method, 1) can be achieved by overloading the _save_relation() method.

This way you don't have to patch the Datamapper library, which will lead to headaches when it's time to do a version upgrade.