Is loading libraries within models a good idea?

[eluser]bretticus[/eluser]
The Model class calls one method: _assign_libraries().

The comments for this method are (bold added for emphasis):

* Creates local references to all currently instantiated objects
* so that any syntax that can be legally used in a controller
* can be used within models.

Just do it in the Model. No worries. You won't have any database overhead by choosing a Model either. $this->db is accessible in either a Controller or a Model.

Cheers!