Requirement based on a value from related table, ExpressiveAnnotations

Asked Oct 14 '19 at 12:20

Active Oct 14 '19 at 12:20

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I know I can make some logic based on the columns in the table/model like this:

[RequiredIf("ColumnA == 1", ErrorMessage = "Error message")]

But is it possible to make a required field if I want to make a check against a column in another table/class. Tables/classes are connected through PK/FK. Something like this:

[RequiredIf("DifferentTable.ColumnB == 0"), ErrorMessage = "Error message")]

In Views I can access values from different tables using item.DifferentTable.ColumnB, is it possible in model and ExpressiveAnnotations?

asked Oct 14 '19 at 12:20

Pomme

Have you tried it? If so, what happened? – BattlFrog Oct 14 '19 at 15:07
It fails: `[NullReferenceException: Object reference not set to an instance of an object.] ` – Pomme Oct 15 '19 at 07:19

Requirement based on a value from related table, ExpressiveAnnotations

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