Decimal precision in JSON Schema

json rest jsonschema
Jay Pete picture Jay Pete · Dec 2, 2014 · Viewed 15.4k times · Source

I want to have my JSON Schema validate that no more than two decimal places are sent to my REST api.

From what I can see in the latest JSON Schema RFC (v4) doesn't allow this. V1 had a maxDecimals validator.

Does anyone know why that was taken out?

I have a field that only holds two decimals when I store it in the database, and I do not just want to round down to two decimals. That would be changing the input quite dramatically for some users. So I want to reject any greater precision and force them to round them selves.

I can of course do this using a custom validator that I write myself, but I would rather not unless I absolutely have to.

Is there another way of indicating this in v4?

Thanks

Answer

fiddur picture fiddur · Dec 3, 2014

They replaced it with multipleOf (via v3 divisibleBy).

For 2 decimal places, just add multipleOf: 0.01.

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