When to the same customer, you have the need to bill him in several currencies; MXN, USD, EUR. How do you tell Odoo to use the correct account receivable client's account of the currency corresponding to the invoice? In customers, you can only establish by selecting one accounting account !!

I can think of 3 ideas:

1) Define the billing currency with the customer and always invoice him in that currency.

If it is not possible,

2) Register the client several times, one for each currency.

If you don't like the above,

3) Automatic action for the system to automatically move the accounting account to pay and / or to collect that is established in the contact.

Is there anything else that can be done? Is option 3 viable? Someone has de python code for automatic action to change accounting account based on the sales journal currency_