<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 gap-2"> <span class="p-float-label"> <Dropdown id="dd" v-model="value" :options="cities" optionLabel="name" :class="['w-full md:w-14rem', { 'p-invalid': errorMessage }]" aria-describedby="dd-error" /> <label for="dd">Select a City</label> </span> <small id="dd-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); const toast = useToast(); function validateField(value) { if (!value) { return 'City is required.'; } return true; } const onSubmit = handleSubmit((values) => { if (values.value && values.value.name) { toast.add({ severity: 'info', summary: 'Form Submitted', detail: values.value.name, life: 3000 }); resetForm(); } }); return { value, handleSubmit, onSubmit, errorMessage }; }, data() { return { cities: [ { name: 'New York', code: 'NY' }, { name: 'Rome', code: 'RM' }, { name: 'London', code: 'LDN' }, { name: 'Istanbul', code: 'IST' }, { name: 'Paris', code: 'PRS' } ], code: { basic: `<template> <div class="card flex justify-content-center"> <form @submit="onSubmit" class="flex flex-column gap-2"> <span class="p-float-label"> <Dropdown id="dd" v-model="value" :options="cities" optionLabel="name" :class="['w-full md:w-14rem', { 'p-invalid': errorMessage }]" aria-describedby="dd-error" /> <label for="dd">Select a City</label> </span> <small class="p-error" id="dd-error">{{ errorMessage || ' ' }}</small> <Button type="submit" label="Submit" /> </form> <Toast /> </div> </template>`, options: `<template> <div class="card flex justify-content-center"> <form @submit="onSubmit" class="flex flex-column gap-2"> <span class="p-float-label"> <Dropdown id="dd" v-model="value" :options="cities" optionLabel="name" :class="['w-full md:w-14rem', { 'p-invalid': errorMessage }]" aria-describedby="dd-error" /> <label for="dd">Select a City</label> </span> <small class="p-error" id="dd-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); const toast = useToast(); function validateField(value) { if (!value) { return 'City is required.'; } return true; } const onSubmit = handleSubmit((values) => { if (values.value && values.value.name) { toast.add({ severity: 'info', summary: 'Form Submitted', detail: values.value.name, life: 3000 }); resetForm(); } }); return { value, handleSubmit, onSubmit, errorMessage }; }, data() { return { cities: [ { name: 'New York', code: 'NY' }, { name: 'Rome', code: 'RM' }, { name: 'London', code: 'LDN' }, { name: 'Istanbul', code: 'IST' }, { name: 'Paris', code: 'PRS' } ] } } }; <\/script>`, composition: `<template> <div class="card flex justify-content-center"> <form @submit="onSubmit" class="flex flex-column gap-2"> <span class="p-float-label"> <Dropdown id="dd" v-model="value" :options="cities" optionLabel="name" :class="['w-full md:w-14rem', { 'p-invalid': errorMessage }]" aria-describedby="dd-error" /> <label for="dd">Select a City</label> </span> <small class="p-error" id="dd-error">{{ errorMessage || ' ' }}</small> <Button type="submit" label="Submit" /> </form> <Toast /> </div> </template> <script setup> import { ref } from 'vue'; import { useToast } from 'primevue/usetoast'; import { useField, useForm } from 'vee-validate'; const { handleSubmit, resetForm } = useForm(); const { value, errorMessage } = useField('value', validateField); const toast = useToast(); const cities = ref([ { name: 'New York', code: 'NY' }, { name: 'Rome', code: 'RM' }, { name: 'London', code: 'LDN' }, { name: 'Istanbul', code: 'IST' }, { name: 'Paris', code: 'PRS' } ]); function validateField(value) { if (!value) { return 'City is required.'; } return true; } const onSubmit = handleSubmit((values) => { if (values.value && values.value.name) { toast.add({ severity: 'info', summary: 'Form Submitted', detail: values.value.name, life: 3000 }); resetForm(); } }); <\/script> ` } }; } }; </script>