djmoney/contrib/django_rest_framework/fields.py throws InvalidOperation instead of validation exception

[ahurracode]

Inputs:

• 1: {'amount': 'v', 'amount_currency': 'XUA'}
• 2: {'amount': '', 'amount_currency': 'XUA'}

[benjaoming]

Hi @ahurracode 👋

Are you looking for a better Exception type here or do you believe this input should be considered valid?

[ahurracode]

Hi @benjaoming ,
Am using djmoney in a DRF project.
if my input is an invalid string for both fields like {'amount': 'v', 'amount_currency': ''} i get a nice error from calling is_valid on the serializer, it would be nice to have same behaviour if any of the field values are not valid

[benjaoming]

That seems fair. Thanks for opening the issue. A PR is most welcome 👍