Theo's Typesafe Cult•2y ago

Zod array of dates

Can someone help me validate that a variable is an array of exactly two dates and ideally in the future. Here is what I've currently got. However it allows an array of two nulls which isn't what I want.

date: z.array(z.date(), {
  required_error: "Departure & Return Date is required",
  invalid_type_error: "Departure & Return Date is required",
}),

date: z.array(z.date(), {
  required_error: "Departure & Return Date is required",
  invalid_type_error: "Departure & Return Date is required",
}),

7 Replies

deforestor•2y ago

So, it should be an array of exactly 2 dates? If so, you can achieve it like this:

dates: z.array(z.date()).length(2),

dates: z.array(z.date()).length(2),

SmadgerOP•2y ago

For some reason this doesn't flag when date is an array of two nulls.

deforestor•2y ago

Well that is very interesting and almost sounds like a bug.. You could workaround it by using the .refine

deforestor•2y ago

https://github.com/colinhacks/zod#refine

GitHub

GitHub - colinhacks/zod: TypeScript-first schema validation with st...

TypeScript-first schema validation with static type inference - GitHub - colinhacks/zod: TypeScript-first schema validation with static type inference

deforestor•2y ago

Also, I'm not 100% sure that's how you want it, but you could try something like this:

dates: z.array(z.date().refine(d=> 
        d!= null
        // is in the future
        && (d > new Date())
    )).length(2),

dates: z.array(z.date().refine(d=> 
        d!= null
        // is in the future
        && (d > new Date())
    )).length(2),

SmadgerOP•2y ago

Cheers

deforestor•2y ago

let me know if it works

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Zod array of dates