Theo's Typesafe Cult•2y ago

Zod date string validation

Someone that knows how I can use datetime string validation in zod but only require the year month and day and not the time?

const datetime = z.string().datetime();

datetime.parse("2020-01-01T00:00:00Z"); // pass
datetime.parse("2020-01-01") // fail but I want this to work

// This is how my validation looks like right now for this field in my schema
  bought: z.string().datetime(tValidation('DATE.MUST_BE_DATE')),

const datetime = z.string().datetime();

datetime.parse("2020-01-01T00:00:00Z"); // pass
datetime.parse("2020-01-01") // fail but I want this to work

// This is how my validation looks like right now for this field in my schema
  bought: z.string().datetime(tValidation('DATE.MUST_BE_DATE')),

Do I need to write my own regex validation for it instead?

8 Replies

Neto•2y ago

using z.coerce.date() can fix that no ?

// c.l = console.log

c.l(dateSchema.safeParse('2023-01-10T00:00:00.000Z').success) // true
c.l(dateSchema.safeParse('2023-01-10').success) // true

// c.l = console.log

c.l(dateSchema.safeParse('2023-01-10T00:00:00.000Z').success) // true
c.l(dateSchema.safeParse('2023-01-10').success) // true

WezterOP•2y ago

okey and it would then fail if I sent in something that isn't a substring of datetime?

Neto•2y ago

as long as the value works with new Date(value) it will pass after the value is valid you can correct_value.toISOString() if you want

WezterOP•2y ago

How should it then look in my schema? This is how it currently looks

  const schema = z.object({
    bought: z.string().datetime(tValidation('DATE.MUST_BE_DATE')),
  });

  const schema = z.object({
    bought: z.string().datetime(tValidation('DATE.MUST_BE_DATE')),
  });

Neto•2y ago

bought: z.coerce.date({...}) If you want the string version of the date, then you can parse later

WezterOP•2y ago

Maybe it would be cleaner to just add regex for it instead? Something like this? const isIsoDate = /\d{4}-[01]\d-[0-3]\d/;

Neto•2y ago

i mean if you want to

WezterOP•2y ago

then I don't have to both parse and coerce it

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Zod date string validation