Aggregates Above the Data (Vue)

The FlexGrid control allows you to display the aggregates at the top of the data. To show aggregates above the data, follow these steps:

  1. Set the aggregate property on the columns that you want to aggregate,
  2. Create a single GroupDescription based on a dummy property, and
  3. Optionally freeze the top row to keep the aggregates in view.

Learn about FlexGrid | FlexGrid API Reference

This example uses Vue.

<template> <div class="container-fluid"> <!-- the grid --> <wj-flex-grid id="sample-grid" :frozenRows=1 :itemsSource="data"> <wj-flex-grid-column binding="id" header="ID" :width=60 :isReadOnly=true></wj-flex-grid-column> <wj-flex-grid-column binding="country" header="Country"></wj-flex-grid-column> <wj-flex-grid-column binding="product" header="Product"></wj-flex-grid-column> <wj-flex-grid-column binding="sales" header="Sales" aggregate="Sum"></wj-flex-grid-column> <wj-flex-grid-column binding="expenses" header="Expenses" aggregate="Sum"></wj-flex-grid-column> </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 wjcCore from "@mescius/wijmo"; import { getData } from "./data"; let App = { name: "App", data: function () { return { data: new wjcCore.CollectionView(getData(), { groupDescriptions: [new wjcCore.PropertyGroupDescription('Grand Totals', () => { return ''; })] }) }; } }; const app = createApp(App); registerGrid(app); app.mount('#app'); </script> <style> .wj-flexgrid { max-height: 250px; margin: 10px 0; } #sample-grid .wj-cell.wj-frozen-row { border-bottom: none; } body { margin-bottom: 20px; } </style>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexGrid Aggregate Above the Data</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>
export function getData() { // create some random data let countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','), products = 'Phones,Computers,Cameras,Stereos'.split(','), data = []; for (let i = 0; i < 200; i++) { data.push({ id: i, country: countries[i % countries.length], product: products[i % products.length], sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } return data; }
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'@vue/shared':'npm:@vue/shared/dist/shared.cjs.js', 'vue-loader': 'npm:systemjs-vue-browser/index.js', //'systemjs-plugin-vue': 'npm:systemjs-plugin-vue/index.js', 'plugin-babel': 'npm:systemjs-plugin-babel/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel/systemjs-babel-browser.js' }, // packages tells the System loader how to load when no filename and/or no extension packages: { src: { defaultExtension: 'js' }, rxjs: { defaultExtension: 'js' }, "node_modules": { defaultExtension: 'js' }, wijmo: { defaultExtension: 'js', } } }); })(this);