Nuxt•2w ago

Clearing UForm errors

I'd like to clear errors from (untouched) fields that had been previously manually set by form.setErrors() in Nuxt UI 2. I tried :

      :validate="() => {
        form!.clear()
        return []
      }"

      :validate="() => {
        form!.clear()
        return []
      }"

      :validate="() => {
        form!.clear('email')
        form!.clear('password')
        form!.clear('errors')
        return []
      }"

      :validate="() => {
        form!.clear('email')
        form!.clear('password')
        form!.clear('errors')
        return []
      }"

      :validate="() => {
        form?.setErrors([])
        return []
      }"

      :validate="() => {
        form?.setErrors([])
        return []
      }"

      :validate="() => {
        form!.errors.value = []
        return []
      }"

      :validate="() => {
        form!.errors.value = []
        return []
      }"

None of that seems to actually clear the errors on all fields, only the one that is being (or was last) touched.

8 Replies

kapa.ai•2w ago

Hi @Cheaterman. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Based on the knowledge sources, I can help you with clearing errors from a UForm in Nuxt UI. The issue you're experiencing is that your attempts to clear errors are only affecting touched fields rather than all fields with errors. Looking at the Form component's exposed methods from the documentation, there are a few approaches you can try. According to the Form component documentation, the Form component exposes several methods including: 1. clear(path?: keyof T) - Clears form errors associated with a specific path. If no path is provided, clears all form errors. 2. setErrors(errors: FormError[], path?: keyof T) - Sets form errors for a given path. If no path is provided, overrides all errors. Your approach using form!.clear() should theoretically work to clear all errors, but there might be timing issues or other factors affecting it. Here are some alternative approaches you can try: 1. Make sure you're accessing the form reference correctly:

<script setup lang="ts">
const form = useTemplateRef('form')

function clearAllErrors() {
  if (form.value) {
    form.value.clear() // Should clear all errors
  }
}
</script>

<template>
  <UForm ref="form" :validate="yourValidateFunction" @submit="onSubmit">
    <!-- Form fields -->
  </UForm>
  <UButton @click="clearAllErrors">Clear All Errors</UButton>
</template>

<script setup lang="ts">
const form = useTemplateRef('form')

function clearAllErrors() {
  if (form.value) {
    form.value.clear() // Should clear all errors
  }
}
</script>

<template>
  <UForm ref="form" :validate="yourValidateFunction" @submit="onSubmit">
    <!-- Form fields -->
  </UForm>
  <UButton @click="clearAllErrors">Clear All Errors</UButton>
</template>

2. Try clearing errors in a separate function rather than within the validate function:

<script setup lang="ts">
const form = useTemplateRef('form')

function validateForm(state: any) {
  // Clear all errors first
  if (form.value) {
    form.value.clear()
  }
  
  // Then perform validation
  const errors = []
  // Your validation logic here
  return errors
}
</script>
<template>
  <UForm ref="form" :validate="validateForm" @submit="onSubmit">
    <!-- Form fields -->
  </UForm>
</template>

<script setup lang="ts">
const form = useTemplateRef('form')

function validateForm(state: any) {
  // Clear all errors first
  if (form.value) {
    form.value.clear()
  }
  
  // Then perform validation
  const errors = []
  // Your validation logic here
  return errors
}
</script>
<template>
  <UForm ref="form" :validate="validateForm" @submit="onSubmit">
    <!-- Form fields -->
  </UForm>
</template>

3. You could also try using the setErrors method with an empty array outside of the validate function:

if (form.value) {
  form.value.setErrors([])
}

if (form.value) {
  form.value.setErrors([])
}

If you're still experiencing issues, it might be related to the timing of when the validation is happening. The Form component automatically triggers validation on input, change, and blur events as mentioned in the Input Events documentation. You might want to try controlling when validation happens using the validate-on prop. Remember that the Form component works with FormField components to display error messages, so make sure your form structure follows the recommended patterns in the documentation. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2w ago

<@534768504943935500> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

CheatermanOP•2w ago

@kapa.ai Making a separate UButton with @click="() => form!.clear()" does indeed clear all errors. Why doesn't it work from within :validation="" prop?

kapa.ai•2w ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- Based on the knowledge sources, I can explain why clearing errors works with a separate button but not within the :validate prop. The difference in behavior is related to how the Form component's validation process works. When you use the :validate prop, you're providing a function that's expected to return validation errors, not clear them. According to the Form component documentation, the validation function must return a list of errors with specific attributes:

const validate = (state: any): FormError[] => {
  const errors = []
  // Your validation logic here
  return errors
}

const validate = (state: any): FormError[] => {
  const errors = []
  // Your validation logic here
  return errors
}

When you call form!.clear() within the validate function, it's likely that: 1. The clear method is executed correctly 2. But then the validation process continues and may re-validate fields based on the current state 3. The validation events are triggered in a specific order as mentioned in the Input Events documentation The Form component automatically triggers validation on input, change, and blur events, and these validations might be re-applying errors immediately after you clear them. When you use a separate button with @click="() => form!.clear()", you're directly calling the clear method outside of the validation flow, which allows it to work as expected. If you need to clear errors as part of your validation logic, you might want to try: 1. Using the validateOn prop to control when validation happens 2. Implementing a more comprehensive validation function that handles both clearing and setting errors appropriately 3. Using the exposed methods like validate() and clear() at specific points in your component lifecycle The Form component's validation is designed to be declarative (returning what errors exist) rather than imperative (performing actions like clearing errors), which explains the behavior difference you're experiencing. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2w ago

<@534768504943935500> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

CheatermanOP•2w ago

@kapa.ai OK, it's a bit ugly but I went about it differently :

watch(state, () => form.value?.clear())

watch(state, () => form.value?.clear())

I'm reasonably sure the reason it doesn't work as-is is because the validate() method of the form is called with a path argument that only includes the path being edited, which will dismiss the results of my custom validator function, including the clear() that happens later (and the errors are being concatenated with the otherErrors variable, see this part of the implementation for more information).

GitHub

ui/src/runtime/components/forms/Form.vue at v2 · nuxt/ui

The Intuitive Vue UI Library powered by Reka UI & Tailwind CSS. - nuxt/ui

kapa.ai•2w ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- Your solution using a watcher is a creative workaround for the issue. While it's not the most elegant approach, it's practical for your specific use case. Your analysis about why clearing errors doesn't work within the validate function is insightful. The Form component's validation process indeed works in a specific way: 1. When a field is edited, the validate method is called with a specific path 2. The validation process happens in stages, with the clear() method being called later in the process 3. Errors are concatenated with existing errors through the otherErrors variable The watch approach you've implemented:

watch(state, () => form.value?.clear())

watch(state, () => form.value?.clear())

This works because it runs outside the validation flow, clearing all errors whenever the state changes, before the validation process has a chance to re-apply them. If you're looking for alternatives, you might also consider: 1. Using the validateOn prop to control exactly when validation happens 2. Implementing a more targeted watcher that only clears errors for specific fields 3. Using the Form's exposed methods in combination with lifecycle hooks Your solution is a practical workaround given the current implementation of the Form component. While it might not be the most elegant approach, it effectively solves the problem of clearing errors from untouched fields. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2w ago

<@534768504943935500> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

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Clearing UForm errors

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