<template> <DocSectionText v-bind="$attrs"> <p> Options can be grouped when a nested data structures is provided. To define the label of a group <i>optionGroupLabel</i> property is needed and also <i>optionGroupChildren</i> is required to define the property that refers to the children of a group. </p> </DocSectionText> <div class="card flex justify-content-center"> <Listbox v-model="selectedCity" :options="groupedCities" optionLabel="label" optionGroupLabel="label" optionGroupChildren="items" class="w-full md:w-14rem" listStyle="max-height:250px"> <template #optiongroup="slotProps"> <div class="flex align-items-center"> <img :alt="slotProps.option.name" src="https://primefaces.org/cdn/primevue/images/flag/flag_placeholder.png" :class="`flag flag-${slotProps.option.code.toLowerCase()} mr-2`" style="width: 18px" /> <div>{{ slotProps.option.label }}</div> </div> </template> </Listbox> </div> <DocSectionCode :code="code" /> </template> <script> export default { data() { return { selectedCity: null, groupedCities: [ { label: 'Germany', code: 'DE', items: [ { label: 'Berlin', value: 'Berlin' }, { label: 'Frankfurt', value: 'Frankfurt' }, { label: 'Hamburg', value: 'Hamburg' }, { label: 'Munich', value: 'Munich' } ] }, { label: 'USA', code: 'US', items: [ { label: 'Chicago', value: 'Chicago' }, { label: 'Los Angeles', value: 'Los Angeles' }, { label: 'New York', value: 'New York' }, { label: 'San Francisco', value: 'San Francisco' } ] }, { label: 'Japan', code: 'JP', items: [ { label: 'Kyoto', value: 'Kyoto' }, { label: 'Osaka', value: 'Osaka' }, { label: 'Tokyo', value: 'Tokyo' }, { label: 'Yokohama', value: 'Yokohama' } ] } ], code: { basic: ` <Listbox v-model="selectedCity" :options="groupedCities" optionLabel="label" optionGroupLabel="label" optionGroupChildren="items" class="w-full md:w-14rem" listStyle="max-height:250px"> <template #optiongroup="slotProps"> <div class="flex align-items-center"> <img :alt="slotProps.option.name" src="https://primefaces.org/cdn/primevue/images/flag/flag_placeholder.png" :class="\`flag flag-\${slotProps.option.code.toLowerCase()} mr-2\`" style="width: 18px" /> <div>{{ slotProps.option.label }}</div> </div> </template> </Listbox> `, options: ` <template> <div class="card flex justify-content-center"> <Listbox v-model="selectedCity" :options="groupedCities" optionLabel="label" optionGroupLabel="label" optionGroupChildren="items" class="w-full md:w-14rem" listStyle="max-height:250px"> <template #optiongroup="slotProps"> <div class="flex align-items-center"> <img :alt="slotProps.option.name" src="https://primefaces.org/cdn/primevue/images/flag/flag_placeholder.png" :class="\`flag flag-\${slotProps.option.code.toLowerCase()} mr-2\`" style="width: 18px" /> <div>{{ slotProps.option.label }}</div> </div> </template> </Listbox> </div> </template> <script> export default { data() { return { selectedCity: null, groupedCities: [ { label: 'Germany', code: 'DE', items: [ { label: 'Berlin', value: 'Berlin' }, { label: 'Frankfurt', value: 'Frankfurt' }, { label: 'Hamburg', value: 'Hamburg' }, { label: 'Munich', value: 'Munich' } ] }, { label: 'USA', code: 'US', items: [ { label: 'Chicago', value: 'Chicago' }, { label: 'Los Angeles', value: 'Los Angeles' }, { label: 'New York', value: 'New York' }, { label: 'San Francisco', value: 'San Francisco' } ] }, { label: 'Japan', code: 'JP', items: [ { label: 'Kyoto', value: 'Kyoto' }, { label: 'Osaka', value: 'Osaka' }, { label: 'Tokyo', value: 'Tokyo' }, { label: 'Yokohama', value: 'Yokohama' } ] } ] }; } }; <\/script> `, composition: ` <template> <div class="card flex justify-content-center"> <Listbox v-model="selectedCity" :options="groupedCities" optionLabel="label" optionGroupLabel="label" optionGroupChildren="items" class="w-full md:w-14rem" listStyle="max-height:250px"> <template #optiongroup="slotProps"> <div class="flex align-items-center"> <img :alt="slotProps.option.name" src="https://primefaces.org/cdn/primevue/images/flag/flag_placeholder.png" :class="\`flag flag-\${slotProps.option.code.toLowerCase()} mr-2\`" style="width: 18px" /> <div>{{ slotProps.option.label }}</div> </div> </template> </Listbox> </div> </template> <script setup> import { ref } from "vue"; const selectedCity = ref(); const groupedCities = ref([ { label: 'Germany', code: 'DE', items: [ { label: 'Berlin', value: 'Berlin' }, { label: 'Frankfurt', value: 'Frankfurt' }, { label: 'Hamburg', value: 'Hamburg' }, { label: 'Munich', value: 'Munich' } ] }, { label: 'USA', code: 'US', items: [ { label: 'Chicago', value: 'Chicago' }, { label: 'Los Angeles', value: 'Los Angeles' }, { label: 'New York', value: 'New York' }, { label: 'San Francisco', value: 'San Francisco' } ] }, { label: 'Japan', code: 'JP', items: [ { label: 'Kyoto', value: 'Kyoto' }, { label: 'Osaka', value: 'Osaka' }, { label: 'Tokyo', value: 'Tokyo' }, { label: 'Yokohama', value: 'Yokohama' } ] } ]); <\/script> ` } }; } }; </script>