<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"> <MultiSelect v-model="value" :class="{ 'p-invalid': errorMessage }" :options="cities" optionLabel="name" placeholder="Select Cities" :maxSelectedLabels="3" class="w-full md:w-20rem" 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); const toast = useToast(); function validateField(value) { if (!value) { return 'City is required.'; } return true; } const onSubmit = handleSubmit((values) => { let detail = ''; values.value.map((value, i) => { detail += value.name + (i < values.value.length - 1 ? ', ' : ''); }); if (values.value && values.value.length > 0) { toast.add({ severity: 'info', summary: 'Form Submitted', detail: detail, 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 align-items-center gap-2"> <MultiSelect v-model="value" :class="{ 'p-invalid': errorMessage }" :options="cities" optionLabel="name" placeholder="Select Cities" :maxSelectedLabels="3" class="w-full md:w-20rem" aria-describedby="text-error" /> <small id="text-error" class="p-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 align-items-center gap-2"> <MultiSelect v-model="value" :class="{ 'p-invalid': errorMessage }" :options="cities" optionLabel="name" placeholder="Select Cities" :maxSelectedLabels="3" class="w-full md:w-20rem" 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); const toast = useToast(); function validateField(value) { if (!value) { return 'City is required.'; } return true; } const onSubmit = handleSubmit((values) => { let detail = ''; values.value.map((value, i) => { detail += value.name + (i < values.value.length - 1 ? ', ' : ''); }); if (values.value && values.value.length > 0) { toast.add({ severity: 'info', summary: 'Form Submitted', detail: detail, 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 align-items-center gap-2"> <MultiSelect v-model="value" :class="{ 'p-invalid': errorMessage }" :options="cities" optionLabel="name" placeholder="Select Cities" :maxSelectedLabels="3" class="w-full md:w-20rem" aria-describedby="text-error" /> <small id="text-error" class="p-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); const toast = useToast(); const cities = [ { 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) => { let detail = ''; values.value.map((value, i) => { detail += value.name + (i < values.value.length - 1 ? ', ' : ''); }); if (values.value && values.value.length > 0) { toast.add({ severity: 'info', summary: 'Form Submitted', detail: detail, life: 3000 }); resetForm(); } }); <\/script> ` } }; } }; </script>