Partner's 3♦ showed a solid suit, and a little bit more (no gambling preempt).
What is your bidding strategy? Do you blast to 7? or 6? Or do you try to find out whether to play 5m or 6m? Or 3NT or 5m?
Finally and most important, does it depend on whether you are commentating, or trying to win a world championship?
Arend
P.S.: Sorry for having a little fun at the commentators, but they treated the players way worse than I am treating them here...

Help

After West passes, your partner opens the bidding, and it goes (uncontested):
1♦-2♣-3♦