what are the differences between libraries, helpers and plugins in CI ?

[eluser]bretticus[/eluser]
I see no reason why this couldn't be implemented in a model. Particularly because it involves updating database records, etc. Remember, the purpose would be for porting this functionality across various areas of your application. Thus, try to make it as modular as possible (provide a way to change settings, etc from outside the model and pass them in for a particular use.)

Good luck!