Zod•6mo ago

adxvcasas - How to set a default value for opti...

How to set a default value for optional values? Hello, so I'm trying to set a default value for my schema, is this approach acceptable?

const formSchemaData = z.object({
    dryRunDate: z.string().optional().default('none'),
})

const formSchemaData = z.object({
    dryRunDate: z.string().optional().default('none'),
})

2 Replies

Unknown User•6mo ago

Message Not Public

(note that this only works to set a default if you pass it undefined which is not typical for most form libraries) you might end up needing:

const formSchemaData = z.object({
    dryRunDate: z.union([z.literal("").transform(() => "none"), z.string().min(1)]),
})

const formSchemaData = z.object({
    dryRunDate: z.union([z.literal("").transform(() => "none"), z.string().min(1)]),
})

Which transforms the literal empty string into the string "none", while passing through any other non-empty strings.