<template> <DocSectionText v-bind="$attrs"> <p>Column visibility based on a condition can be implemented with dynamic columns, in this sample a MultiSelect is used to manage the visible columns.</p> </DocSectionText> <DeferredDemo @load="loadDemoData"> <div class="card"> <DataTable :value="products" tableStyle="min-width: 50rem"> <template #header> <div style="text-align: left"> <MultiSelect :modelValue="selectedColumns" :options="columns" optionLabel="header" @update:modelValue="onToggle" display="chip" placeholder="Select Columns" /> </div> </template> <Column field="code" header="Code" /> <Column v-for="(col, index) of selectedColumns" :key="col.field + '_' + index" :field="col.field" :header="col.header"></Column> </DataTable> </div> </DeferredDemo> <DocSectionCode :code="code" :service="['ProductService']" /> </template> <script> import { ProductService } from '@/service/ProductService'; export default { data() { return { selectedColumns: null, columns: null, products: null, code: { basic: ` <DataTable :value="products" tableStyle="min-width: 50rem"> <template #header> <div style="text-align:left"> <MultiSelect :modelValue="selectedColumns" :options="columns" optionLabel="header" @update:modelValue="onToggle" display="chip" placeholder="Select Columns" /> </div> </template> <Column field="code" header="Code" /> <Column v-for="(col, index) of selectedColumns" :field="col.field" :header="col.header" :key="col.field + '_' + index"></Column> </DataTable> `, options: ` <template> <div> <DataTable :value="products" tableStyle="min-width: 50rem"> <template #header> <div style="text-align:left"> <MultiSelect :modelValue="selectedColumns" :options="columns" optionLabel="header" @update:modelValue="onToggle" display="chip" placeholder="Select Columns" /> </div> </template> <Column field="code" header="Code" /> <Column v-for="(col, index) of selectedColumns" :field="col.field" :header="col.header" :key="col.field + '_' + index"></Column> </DataTable> </div> </template> <script> import { ProductService } from '@/service/ProductService'; export default { data() { return { selectedColumns: null, columns: null, products: null } }, created() { this.columns = [ {field: 'name', header: 'Name'}, {field: 'category', header: 'Category'}, {field: 'quantity', header: 'Quantity'} ]; this.selectedColumns = this.columns; }, mounted() { ProductService.getProductsMini().then((data) => (this.products = data)); }, methods: { onToggle(value) { this.selectedColumns = this.columns.filter(col => value.includes(col)); } } } <\/script> `, composition: ` <template> <div> <DataTable :value="products" tableStyle="min-width: 50rem"> <template #header> <div style="text-align:left"> <MultiSelect :modelValue="selectedColumns" :options="columns" optionLabel="header" @update:modelValue="onToggle" display="chip" placeholder="Select Columns" /> </div> </template> <Column field="code" header="Code" /> <Column v-for="(col, index) of selectedColumns" :field="col.field" :header="col.header" :key="col.field + '_' + index"></Column> </DataTable> </div> </template> <script setup> import { ref, onMounted } from 'vue'; import { ProductService } from '@/service/ProductService'; onMounted(() => { ProductService.getProductsMini().then((data) => (products.value = data)); }); const columns = ref([ {field: 'name', header: 'Name'}, {field: 'category', header: 'Category'}, {field: 'quantity', header: 'Quantity'} ]); const selectedColumns = ref(columns.value); const products = ref(); const onToggle = (val) => { selectedColumns.value = columns.value.filter(col => val.includes(col)); }; <\/script> `, data: ` { id: '1000', code: 'f230fh0g3', name: 'Bamboo Watch', description: 'Product Description', image: 'bamboo-watch.jpg', price: 65, category: 'Accessories', quantity: 24, inventoryStatus: 'INSTOCK', rating: 5 }, ...` } }; }, created() { this.columns = [ { field: 'name', header: 'Name' }, { field: 'category', header: 'Category' }, { field: 'quantity', header: 'Quantity' } ]; this.selectedColumns = this.columns; }, methods: { loadDemoData() { ProductService.getProductsMini().then((data) => (this.products = data)); }, onToggle(value) { this.selectedColumns = this.columns.filter((col) => value.includes(col)); } } }; </script>