primevue-mirror/pages/datatable/DynamicColumns.vue

<template>
    <div>
        <div class="content-section introduction">
            <div class="feature-intro">
                <h1>DataTable <span>Dynamic Columns</span></h1>
                <p>Columns can be defined dynamically using the v-for directive.</p>
            </div>
            <AppDemoActions />
        </div>

        <div class="content-section implementation">
            <div class="card">
                <DataTable :value="products" responsiveLayout="scroll">
                    <Column v-for="col of columns" :field="col.field" :header="col.header" :key="col.field"></Column>
                </DataTable>
            </div>
        </div>

        <ClientOnly>
            <AppDoc name="DataTableDynamicColumnsDemo" :sources="sources" :service="['ProductService']" :data="['products-small']" github="datatable/DataTableDynamicColumnsDemo.vue" />
        </ClientOnly>
    </div>
</template>

<script>
import ProductService from '../../service/ProductService';

export default {
    data() {
        return {
            columns: null,
            products: null,
            sources: {
                'options-api': {
                    tabName: 'Options API Source',
                    content: `
<template>
    <div>
        <DataTable :value="products" responsiveLayout="scroll">
            <Column v-for="col of columns" :field="col.field" :header="col.header" :key="col.field"></Column>
        </DataTable>
    </div>
</template>

<script>
import ProductService from './service/ProductService';

export default {
    data() {
        return {
            columns: null,
            products: null
        }
    },
    productService: null,
    created() {
        this.productService = new ProductService();

        this.columns = [
            {field: 'code', header: 'Code'},
            {field: 'name', header: 'Name'},
            {field: 'category', header: 'Category'},
            {field: 'quantity', header: 'Quantity'}
        ];
    },
    mounted() {
        this.productService.getProductsSmall().then(data => this.products = data);
    }
}
<\\/script>
`
                },
                'composition-api': {
                    tabName: 'Composition API Source',
                    content: `
<template>
    <div>
        <DataTable :value="products" responsiveLayout="scroll">
            <Column v-for="col of columns" :field="col.field" :header="col.header" :key="col.field"></Column>
        </DataTable>
    </div>
</template>

<script>
import { ref, onMounted } from 'vue';
import ProductService from './service/ProductService';

export default {
    setup() {
        onMounted(() => {
            productService.value.getProductsSmall().then(data => products.value = data);
        })

        const productService = ref(new ProductService());
        const columns = ref([
            {field: 'code', header: 'Code'},
            {field: 'name', header: 'Name'},
            {field: 'category', header: 'Category'},
            {field: 'quantity', header: 'Quantity'}
        ]);
        const products = ref();

        return { columns, products }
    }
}
<\\/script>
`
                },
                'browser-source': {
                    tabName: 'Browser Source',
                    imports: `<script src="https://unpkg.com/primevue@^3/datatable/datatable.min.js"><\\/script>
        <script src="https://unpkg.com/primevue@^3/column/column.min.js"><\\/script>
        <script src="./ProductService.js"><\\/script>`,
                    content: `<div id="app">
            <p-datatable :value="products" responsive-layout="scroll">
                <p-column v-for="col of columns" :field="col.field" :header="col.header" :key="col.field"></p-column>
            </p-datatable>
        </div>

        <script type="module">
        const { createApp, ref, onMounted } = Vue;

        const App = {
            setup() {
                onMounted(() => {
                    productService.value.getProductsSmall().then(data => products.value = data);
                })

                const productService = ref(new ProductService());
                const columns = ref([
                    {field: 'code', header: 'Code'},
                    {field: 'name', header: 'Name'},
                    {field: 'category', header: 'Category'},
                    {field: 'quantity', header: 'Quantity'}
                ]);
                const products = ref();

                return { columns, products }
            },
            components: {
                "p-datatable": primevue.datatable,
                "p-column": primevue.column
            }
        };

        createApp(App)
            .use(primevue.config.default)
            .mount("#app");
        <\\/script>
`
                }
            }
        };
    },
    productService: null,
    created() {
        this.productService = new ProductService();

        this.columns = [
            { field: 'code', header: 'Code' },
            { field: 'name', header: 'Name' },
            { field: 'category', header: 'Category' },
            { field: 'quantity', header: 'Quantity' }
        ];
    },
    mounted() {
        this.productService.getProductsSmall().then((data) => (this.products = data));
    }
};
</script>