[EN] OpenXava: Validating with @EntityValidator
In this 18th lesson, you'll learn to validate using the anotation @EntityValidator. We are going to enhance our invoicing application with this validation: if the orders are not delivered yet, then the user cannot assign them to an invoice. That is, only delivered orders can be associated with an invoice.
🔎You can see more about the lesson here: https://openxava.org/OpenXavaDoc/docs...
🔎You can access the full course here: https://www.openxava.org/OpenXavaDoc/...
For any problem with the lesson ask in our forum:
https://sourceforge.net/p/openxava/di...
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