Vue SelectBox - Customize Group Headers

By default, group headers display text of the key field in a bold font. If you need a more flexible solution, specify groupTemplate.

App.vue
  • <template>
  • <DxSelectBox ...
  • :data-source="selectBoxDataSource"
  • :grouped="true"
  • display-expr="name"
  • value-expr="count"
  • group-template="group"
  • >
  • <template #group="{ data }">
  • <p>
  • {{ data.key + ' | Count: ' + data.overallCount }}
  • </p>
  • </template>
  • </DxSelectBox>
  • </template>
  •  
  • <script>
  • import 'devextreme/dist/css/dx.light.css';
  •  
  • import { DxSelectBox } from 'devextreme-vue/select-box';
  • import DataSource from "devextreme/data/data_source";
  •  
  • export default {
  • components: {
  • DxSelectBox
  • },
  • data() {
  • const fruitsVegetables = [{
  • key: "Fruits",
  • items: [
  • { name: "Apples", count: 10 },
  • { name: "Oranges", count: 12 },
  • { name: "Lemons", count: 15 }
  • ]
  • }, {
  • key: "Vegetables",
  • items: [
  • { name: "Potatoes", count: 5 },
  • { name: "Tomatoes", count: 9 },
  • { name: "Turnips", count: 8 }
  • ]
  • }];
  • const selectBoxDataSource = new DataSource({
  • store: fruitsVegetables,
  • map: function(groupedItem) {
  • let overallCount = 0;
  • groupedItem.items.forEach(function(item) {
  • overallCount += item.count;
  • })
  • return Object.assign(groupedItem, { overallCount: overallCount });
  • }
  • });
  •  
  • return {
  • selectBoxDataSource
  • }
  • }
  • }
  • </script>

View Demo

See Also