DataMaps (Vue)

In many situations, you may want columns to map values so cells display a value that is different from what is actually stored in the grid. You can accomplish this with the formatItem event, but the FlexGrid provides a better alternative: DataMaps.

If you set a column's dataMap property to an instance of a DataMap, the grid will use it to look up display values for each data item, and will provide a drop-down list with valid items to use when editing the cells.

Learn about FlexGrid | DataMaps Documentation | FlexGrid API Reference

This example uses Vue.

<template> <div class="container-fluid"> <wj-flex-grid :itemsSource="data" :initialized="mainGridInitialized"> <wj-flex-grid-column header="Customer" binding="customer" width="1.5*" :dataMap="customerMap"></wj-flex-grid-column> <wj-flex-grid-column header="Country" binding="country" width="*" :dataMap="countries"></wj-flex-grid-column> <wj-flex-grid-column header="Downloads" binding="downloads" width="*" format="n0"></wj-flex-grid-column> <wj-flex-grid-column header="Sales" binding="sales" width="*" format="n0"></wj-flex-grid-column> <wj-flex-grid-column header="Expenses" binding="expenses" width="*" format="n0"></wj-flex-grid-column> </wj-flex-grid> <p> And here is another grid showing all the customers. If you edit their names, you will see the change in the top grid:</p> <wj-flex-grid :itemsSource="customers" :initialized="dataMapGridInitialized"></wj-flex-grid> </div> </template> <script> import "@mescius/wijmo.styles/wijmo.css"; import "bootstrap.css"; import { createApp } from "vue" import { registerGrid } from "@mescius/wijmo.vue2.grid"; import * as wjcGrid from "@mescius/wijmo.grid"; let App = { name: "App", data: function () { return { countries: 'US,Germany,UK,Japan,Sweden,Norway,Denmark'.split(','), customers: [ { id: 0, name: 'Paul Perkins', address: '123 Main St' }, { id: 1, name: 'Susan Smith', address: '456 Grand Ave' }, { id: 2, name: 'Joan Jett', address: '789 Broad St' }, { id: 3, name: 'Don Davis', address: '321 Shattuck Ave' }, ], data: null, customerMap: null }; }, methods: { mainGridInitialized(mainGrid) { this.mainGrid = mainGrid; }, dataMapGridInitialized(flexgrid) { this.data = this._getData(); this.customerMap = new wjcGrid.DataMap(this.customers, 'id', 'name'); var _this = this; flexgrid.rowEditEnded.addHandler(() => { let column = this.mainGrid.getColumn('customer'); if (column) { column.dataMap = new wjcGrid.DataMap(_this.customers, 'id', 'name'); } this.mainGrid.refresh(); // update customer names on the main grid }); }, _getData() { let data = []; for (let i = 0; i < this.countries.length; i++) { data.push({ id: i, country: this.countries[i], customer: this.customers[i % this.customers.length].id, active: i % 5 != 0, downloads: Math.round(Math.random() * 200000), sales: Math.random() * 100000, expenses: Math.random() * 50000 }); } return data; } } }; const app = createApp(App); registerGrid(app); app.mount('#app'); </script> <style> .wj-flexgrid { max-height: 200px; margin: 12px 0; } </style>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexGrid Column DataMaps</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app.vue'); </script> </head> <body> <div id="app"> </div> </body> </html>
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