<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"> <CascadeSelect v-model="value" :class="{ 'p-invalid': errorMessage }" :options="countries" optionLabel="cname" optionGroupLabel="name" :optionGroupChildren="['states', 'cities']" style="min-width: 14rem" placeholder="Select a City" aria-describedby="cc-error" /> <small id="cc-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) { toast.add({ severity: 'info', summary: 'Form Submitted', detail: values.value.cname, life: 3000 }); resetForm(); } }); return { value, handleSubmit, onSubmit, errorMessage }; }, data() { return { selectedCity: null, countries: [ { name: 'Australia', code: 'AU', states: [ { name: 'New South Wales', cities: [ { cname: 'Sydney', code: 'A-SY' }, { cname: 'Newcastle', code: 'A-NE' }, { cname: 'Wollongong', code: 'A-WO' } ] }, { name: 'Queensland', cities: [ { cname: 'Brisbane', code: 'A-BR' }, { cname: 'Townsville', code: 'A-TO' } ] } ] }, { name: 'Canada', code: 'CA', states: [ { name: 'Quebec', cities: [ { cname: 'Montreal', code: 'C-MO' }, { cname: 'Quebec City', code: 'C-QU' } ] }, { name: 'Ontario', cities: [ { cname: 'Ottawa', code: 'C-OT' }, { cname: 'Toronto', code: 'C-TO' } ] } ] }, { name: 'United States', code: 'US', states: [ { name: 'California', cities: [ { cname: 'Los Angeles', code: 'US-LA' }, { cname: 'San Diego', code: 'US-SD' }, { cname: 'San Francisco', code: 'US-SF' } ] }, { name: 'Florida', cities: [ { cname: 'Jacksonville', code: 'US-JA' }, { cname: 'Miami', code: 'US-MI' }, { cname: 'Tampa', code: 'US-TA' }, { cname: 'Orlando', code: 'US-OR' } ] }, { name: 'Texas', cities: [ { cname: 'Austin', code: 'US-AU' }, { cname: 'Dallas', code: 'US-DA' }, { cname: 'Houston', code: 'US-HO' } ] } ] } ], code: { basic: ` <template> <div class="card flex justify-content-center"> <form @submit="onSubmit" class="flex flex-column gap-2"> <CascadeSelect v-model="value" :class="{ 'p-invalid': errorMessage }" :options="countries" optionLabel="cname" optionGroupLabel="name" :optionGroupChildren="['states', 'cities']" style="min-width: 14rem" placeholder="Select a City" aria-describedby="cc-error" /> <small class="p-error" id="cc-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"> <CascadeSelect v-model="value" :class="{ 'p-invalid': errorMessage }" :options="countries" optionLabel="cname" optionGroupLabel="name" :optionGroupChildren="['states', 'cities']" style="min-width: 14rem" placeholder="Select a City" aria-describedby="cc-error" /> <small class="p-error" id="cc-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) { toast.add({ severity: 'info', summary: 'Form Submitted', detail: values.value.cname, life: 3000 }); resetForm(); } }); return { value, handleSubmit, onSubmit, errorMessage }; }, data() { return { selectedCity: null, countries: [ { name: 'Australia', code: 'AU', states: [ { name: 'New South Wales', cities: [ { cname: 'Sydney', code: 'A-SY' }, { cname: 'Newcastle', code: 'A-NE' }, { cname: 'Wollongong', code: 'A-WO' } ] }, { name: 'Queensland', cities: [ { cname: 'Brisbane', code: 'A-BR' }, { cname: 'Townsville', code: 'A-TO' } ] } ] }, { name: 'Canada', code: 'CA', states: [ { name: 'Quebec', cities: [ { cname: 'Montreal', code: 'C-MO' }, { cname: 'Quebec City', code: 'C-QU' } ] }, { name: 'Ontario', cities: [ { cname: 'Ottawa', code: 'C-OT' }, { cname: 'Toronto', code: 'C-TO' } ] } ] }, { name: 'United States', code: 'US', states: [ { name: 'California', cities: [ { cname: 'Los Angeles', code: 'US-LA' }, { cname: 'San Diego', code: 'US-SD' }, { cname: 'San Francisco', code: 'US-SF' } ] }, { name: 'Florida', cities: [ { cname: 'Jacksonville', code: 'US-JA' }, { cname: 'Miami', code: 'US-MI' }, { cname: 'Tampa', code: 'US-TA' }, { cname: 'Orlando', code: 'US-OR' } ] }, { name: 'Texas', cities: [ { cname: 'Austin', code: 'US-AU' }, { cname: 'Dallas', code: 'US-DA' }, { cname: 'Houston', code: 'US-HO' } ] } ] } ] } } }; <\/script>`, composition: ` <template> <div class="card flex justify-content-center"> <form @submit="onSubmit" class="flex flex-column gap-2"> <CascadeSelect v-model="value" :class="{ 'p-invalid': errorMessage }" :options="countries" optionLabel="cname" optionGroupLabel="name" :optionGroupChildren="['states', 'cities']" style="min-width: 14rem" placeholder="Select a City" aria-describedby="cc-error" /> <small class="p-error" id="cc-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 selectedCity = ref(); const countries = ref([ { name: 'Australia', code: 'AU', states: [ { name: 'New South Wales', cities: [ { cname: 'Sydney', code: 'A-SY' }, { cname: 'Newcastle', code: 'A-NE' }, { cname: 'Wollongong', code: 'A-WO' } ] }, { name: 'Queensland', cities: [ { cname: 'Brisbane', code: 'A-BR' }, { cname: 'Townsville', code: 'A-TO' } ] } ] }, { name: 'Canada', code: 'CA', states: [ { name: 'Quebec', cities: [ { cname: 'Montreal', code: 'C-MO' }, { cname: 'Quebec City', code: 'C-QU' } ] }, { name: 'Ontario', cities: [ { cname: 'Ottawa', code: 'C-OT' }, { cname: 'Toronto', code: 'C-TO' } ] } ] }, { name: 'United States', code: 'US', states: [ { name: 'California', cities: [ { cname: 'Los Angeles', code: 'US-LA' }, { cname: 'San Diego', code: 'US-SD' }, { cname: 'San Francisco', code: 'US-SF' } ] }, { name: 'Florida', cities: [ { cname: 'Jacksonville', code: 'US-JA' }, { cname: 'Miami', code: 'US-MI' }, { cname: 'Tampa', code: 'US-TA' }, { cname: 'Orlando', code: 'US-OR' } ] }, { name: 'Texas', cities: [ { cname: 'Austin', code: 'US-AU' }, { cname: 'Dallas', code: 'US-DA' }, { cname: 'Houston', code: 'US-HO' } ] } ] } ]); function validateField(value) { if (!value) { return 'City is required.'; } return true; } const onSubmit = handleSubmit((values) => { if (values.value) { toast.add({ severity: 'info', summary: 'Form Submitted', detail: values.value.cname, life: 3000 }); resetForm(); } }); <\/script> ` } }; } }; </script>