<template> <DocSectionText v-bind="$attrs"> <p><a href="https://vee-validate.logaretm.com/v4/">VeeValidate</a> is a popular library for handling forms in Vue.</p> </DocSectionText> <div class="card flex justify-content-center"> <form @submit="onSubmit" class="flex flex-column align-items-center gap-2"> <Knob v-model="value" aria-describedby="text-error" /> <small id="text-error" class="p-error">{{ errorMessage || ' ' }}</small> <Button type="submit" label="Submit" /> </form> </div> <DocSectionCode :code="code" :dependencies="{ 'vee-validate': '4.8.2' }" /> </template> <script> import { useToast } from 'primevue/usetoast'; import { useField, useForm } from 'vee-validate'; export default { setup() { const { handleSubmit, resetForm } = useForm(); const { value, errorMessage } = useField('value', validateField, { validateOnValueUpdate: false, initialValue: 0 }); const toast = useToast(); function validateField(value) { if (!value) { return 'The value must be greater than zero.'; } return true; } const onSubmit = handleSubmit((values) => { if (values.value > 0) { toast.add({ severity: 'info', summary: 'Form Submitted', detail: values.value, life: 3000 }); resetForm({ values: { value: 0 } }); } }); return { value, handleSubmit, onSubmit, errorMessage }; }, data() { return { code: { basic: `<template> <div class="card flex justify-content-center"> <form @submit="onSubmit" class="flex flex-column gap-2"> <Knob v-model="value" aria-describedby="text-error" /> <small id="text-error" class="p-error">{{ errorMessage || ' ' }}</small> <Button type="submit" label="Submit" /> </form> </div> </template>`, options: `<template> <div class="card flex justify-content-center"> <form @submit="onSubmit" class="flex flex-column gap-2"> <Knob v-model="value" aria-describedby="text-error" /> <small id="text-error" class="p-error">{{ errorMessage || ' ' }}</small> <Button type="submit" label="Submit" /> </form> <Toast /> </div> </template> <script> import { useToast } from 'primevue/usetoast'; import { useField, useForm } from 'vee-validate'; export default { setup() { const { handleSubmit, resetForm } = useForm(); const { value, errorMessage } = useField('value', validateField, { validateOnValueUpdate: false, initialValue: 0 }); const toast = useToast(); function validateField(value) { if (!value) { return 'The value must be greater than zero.'; } return true; } const onSubmit = handleSubmit((values) => { if (values.value > 0) { toast.add({ severity: 'info', summary: 'Form Submitted', detail: values.value, life: 3000 }); resetForm({ values: { value: 0 } }); } }); return { value, handleSubmit, onSubmit, errorMessage }; }, }; <\/script>`, composition: `<template> <div class="card flex justify-content-center"> <form @submit="onSubmit" class="flex flex-column gap-2"> <Knob id="value" v-model="value" type="text" :class="{ 'p-invalid': errorMessage }" aria-describedby="text-error" /> <small class="p-error" id="text-error">{{ errorMessage || ' ' }}</small> <Button type="submit" label="Submit" /> </form> <Toast /> </div> </template> <script setup> import { useToast } from 'primevue/usetoast'; import { useField, useForm } from 'vee-validate'; const { handleSubmit, resetForm } = useForm(); const { value, errorMessage } = useField('value', validateField, { validateOnValueUpdate: false, initialValue: 0 }); const toast = useToast(); function validateField(value) { if (!value) { return 'The value must be greater than zero.'; } return true; } const onSubmit = handleSubmit((values) => { if (values.value > 0) { toast.add({ severity: 'info', summary: 'Form Submitted', detail: values.value, life: 3000 }); resetForm({ values: { value: 0 } }); } }); <\/script> ` } }; } }; </script>