sunny-green

ValidationError - Zod

I'm wondering why ValidationError doesn't return an array of strings, where each item is an error? According to this screenshot I'm expecting an array like [ "Password, must contain at least 8 characters" , "Password, must include tuna" ] It looks always return 1 item with the errors concat with , . The thing is, I want to display 1 error at the time, not all of them for a better UX. If I do it in a hacky way extracting the items based on , it won't work for error messages where I add a comma. Is there any workaround for this?

9 Replies

correct-apricot•15mo ago

Looks like it could be a problem with the Zod adapter maybe? Because ValidationError isn't meant to be an array

sunny-greenOP•15mo ago

What should be then? For example for pasaword field, if there are 3 errors, I'd like to show one at the time

correct-apricot•15mo ago

I don't know, because you haven't provided much info about your setup

sunny-greenOP•15mo ago

I'll paste the whole code from the form to see what i'm doing wrong, thanks mate

correct-apricot•15mo ago

Looks like the zod adapter is the one that is smooshing them together

genetic-orange•15mo ago

If you want more controls on the errors you can pass a transformErrors function to the adapter. With zod might look like this to only get the first:

    validatorAdapter: zodValidator({
      transformErrors: (errors) => errors.map((error) => error.message)[0]
    }),

    validatorAdapter: zodValidator({
      transformErrors: (errors) => errors.map((error) => error.message)[0]
    }),

sunny-greenOP•15mo ago

is joining all the zod errors in 1 single error applying for all the validators adapters? It looks like an opinionated decision for me. I'll have a look at the codebase and see how the adapters really work Thanks, I'll have a look at tranaformErrors

genetic-orange•15mo ago

Yes it's the default behavior

literary-plum•14mo ago

I made a PR with a failing test (expecting the errors-array to have multiple items) a month ago – https://github.com/TanStack/form/pull/943 I looked through the code and it looks like multiple places would have to be touched - but only having one item in the errors-array feels wrong.

GitHub

test: verify zod validator returns ValidationError[] by Pascalmh · ...

For now this is just a failing test ToDo: implement the fix optional?: refactor the test - add a new test instead of extending the existing one refs #942

Gaming

Programming

ValidationError - Zod

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