I was wondering

[Chrissss]

Is there an action replay code that makes it look like you beat all the in game trainers so that i dont need to fight a whole bunch of trainers to finish the story part of the game and also i noticed the honey tree codes for platinum, Do they work on Diamond??

[theSLAYER]

For what I know,

There isn't such a code available.

However if you are sick of fighting trainers,

The alternative would be trying to find a code which can reduce your opponents pkmn to 0 or 1hp with a press of a button (similar to leaf green).

As for the honey tree code for platinum,

It is probably not compatible with Diamond.