multi-currency transactions (was: problem with entering a stock transaction)

[Christian Stimming]

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On Sonntag, 5. Januar 2003 07:17, Derek Atkins wrote:
> Ok, this is now fixed in CVS.  As I suspected, my multi-currency code
> was (improperly) acting on stock accounts.  I've fixed it so it wont
> do that anymore, and will only act on accounts where it should be
> acting.
>
> I also fixed another bug where entering a transaction in a new stock
> account would (incorrectly) pop up the exchange-rate dialog.

Wow. Thanks a lot! This would've been the next issue on my list. Now that this 
is fixed, the legacy 1.6-like currency exchange transactions should be 
editable exactly like they've been in 1.6.x. Phew. This really solved a lot 
of my concerns about the multi-currency handling. Again thanks.

As for the rest of the multi-currency handling: I would still propose to 
introduce a constraint on multi-currency transactions: They should be allowed 
to only contain at most two different currencies. With the exception that 
each split that goes into a stock-/currency-account may add another currency 
to that number. 

That way, the "edit exchange rate" dialog only has to deal with one exchange 
rate _per transaction_. (The exchange rate for any third/4th/... currency 
will only be editable through its own stock-account register window.)
The edit-exchange-rate dialog then knows the exact from-amount in currency A 
and the exakt to-amount in currency B, and the dialog can offer to either 
edit precisely this from-amount, or the to-amount, or the rate in between, 
just like the stock-account register does. 

To reconcile the transaction, the dialog can follow the rule that if there is 
only one split with that currency, changes to from-/to-amount directly apply 
to that split, but if there is more than one split, the splits' 
amounts/values are unchanged and the transaction is left imbalanced.

What do you think?

Christian
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