Calculated Column

In some conditions, the table origin columns only have basic data. If you want to add a new column that is calculated based on the other columns in the table, you can use a Calculated Column.

Description
app.jsx
app-func.jsx
index.html
styles.css
Copy to CodeMine
Open the demo in new window can open the designer

How to open desgnr

You can add a calculated column into a table column with the following code:

    const spread = new GC.Spread.Sheets.Workbook('ss', { sheetCount: 1 });
    const orderDetailsTable = spread.dataManager().addTable('OrderDetails', {
        remote: {
            read: {
                url: baseApiUrl + '/OrderDetail'
            }
        }
    });
    orderDetailsTable.fetch().then(() => {
        orderDetailsTable.columns["Sales"] = { // add a custom column
            value: "=[@UnitPrice]*[@Quantity]*(1-[@Discount])", // the column value is formula.
        };
        const reportSheet = spread.addSheetTab(0, 'report1', GC.Spread.Sheets.SheetType.reportSheet);
        const templateSheet = reportSheet.getTemplate();
        // set value and binding for the template
        templateSheet.setTemplateCell(1, 0, {
            type: 'List',
            binding: `OrderDetails[ProductId]`,
        });
        templateSheet.setTemplateCell(1, 1, {
            type: 'Summary',
            aggregate: "Sum",
            binding: `OrderDetails[Sales]`,
        });
        // refresh the report
        reportSheet.refresh();
    });
Open the demo in new window can open the designer You can add a calculated column into a table column with the following code:
import * as React from 'react'; import * as ReactDOM from 'react-dom'; import './styles.css'; import { AppFunc } from './app-func'; ReactDOM.render(<AppFunc />, document.getElementById('app'));
import * as React from 'react'; import * as ReactDOM from 'react-dom'; import { SpreadSheets } from '@mescius/spread-sheets-react'; import GC from '@mescius/spread-sheets'; import '@mescius/spread-sheets-print'; import '@mescius/spread-sheets-shapes'; import '@mescius/spread-sheets-charts'; import '@mescius/spread-sheets-reportsheet-addon'; import '@mescius/spread-sheets-tablesheet'; import '@mescius/spread-sheets-ganttsheet'; import '@mescius/spread-sheets-formula-panel'; import '@mescius/spread-sheets-designer-resources-en'; import { Designer } from '@mescius/spread-sheets-designer-react'; import './styles.css'; import '$DEMOROOT$/spread/source/js/react_vue/license.js'; import { registerlic } from '$DEMOROOT$/spread/source/js/designer/react_vue/license.js'; registerlic(GC); export function AppFunc() { return ( <div class='demo'> {top === window ? <Designer styleInfo={{ height: '100%' }} designerInitialized={initDesigner} /> : <SpreadSheets workbookInitialized={initSpread} />} </div> ); } async function initDesigner(designer) { await initSpread(designer.getWorkbook()); designer.refresh(); } async function initSpread(spread) { spread.suspendPaint(); spread.setSheetCount(1); const loadingTip = addLoadingTip(); const res = await fetch('$DEMOROOT$/en/sample/features/report-sheet/data-settings/calculated-columns/spread.json'); await spread.fromJSON(correctTableUrl(await res.json())); loadingTip.remove(); spread.resumePaint(); } function addLoadingTip() { const div = document.createElement('div'); div.style.position = 'absolute'; div.style.inset = '0'; div.style.display = 'flex'; div.style.alignItems = 'center'; div.style.justifyContent = 'center'; div.style.background = 'white'; div.style.zIndex = '100'; div.textContent = 'Loading data from server ...'; document.body.appendChild(div); return div; } function correctTableUrl(json) { const baseUrl = '$DEMOROOT$'; const localUrl = 'http://localhost:8070/spreadjs/demos'; const replaceUrl = (obj) => { if (obj && obj.url && obj.url.startsWith(localUrl)) { obj.url = obj.url.replace(localUrl, baseUrl); } } if (json.dataManager && json.dataManager.tables) { json.dataManager.tables.forEach((table) => { if (table.dataSourceOption && table.dataSourceOption.remote) { Object.values(table.dataSourceOption.remote).forEach(replaceUrl); } }); } return json; }
<!doctype html> <html style="height:100%;font-size:14px;"> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <link rel="stylesheet" type="text/css" href="$DEMOROOT$/en/react/node_modules/@mescius/spread-sheets/styles/gc.spread.sheets.excel2013white.css"> <link rel="stylesheet" type="text/css" href="$DEMOROOT$/en/react/node_modules/@mescius/spread-sheets-designer/styles/gc.spread.sheets.designer.min.css"> <script src="$DEMOROOT$/en/react/node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div id="app" style="height: 100%;"></div> </body> </html>
body { position: absolute; top: 0; bottom: 0; left: 0; right: 0; } .demo { width: 100%; height: 100%; overflow: hidden; }
(function (global) { System.config({ transpiler: 'plugin-babel', babelOptions: { es2015: true, react: true }, meta: { '*.css': { loader: 'css' } }, paths: { // paths serve as alias 'npm:': 'node_modules/' }, // map tells the System loader where to look for things map: { '@mescius/spread-sheets-designer-resources-en': 'npm:@mescius/spread-sheets-designer-resources-en/index.js', '@mescius/spread-sheets-designer-react': 'npm:@mescius/spread-sheets-designer-react/index.js', '@mescius/spread-sheets-designer': 'npm:@mescius/spread-sheets-designer/index.js', '@mescius/spread-excelio': 'npm:@mescius/spread-excelio/index.js', '@mescius/spread-sheets-barcode': 'npm:@mescius/spread-sheets-barcode/index.js', '@mescius/spread-sheets-charts': 'npm:@mescius/spread-sheets-charts/index.js', '@mescius/spread-sheets-languagepackages': 'npm:@mescius/spread-sheets-languagepackages/index.js', '@mescius/spread-sheets-print': 'npm:@mescius/spread-sheets-print/index.js', '@mescius/spread-sheets-pdf': 'npm:@mescius/spread-sheets-pdf/index.js', '@mescius/spread-sheets-shapes': 'npm:@mescius/spread-sheets-shapes/index.js', '@mescius/spread-sheets-io': 'npm:@mescius/spread-sheets-io/index.js', '@mescius/spread-sheets-reportsheet-addon': 'npm:@mescius/spread-sheets-reportsheet-addon/index.js', '@mescius/spread-sheets-tablesheet': 'npm:@mescius/spread-sheets-tablesheet/index.js', '@mescius/spread-sheets-ganttsheet': 'npm:@mescius/spread-sheets-ganttsheet/index.js', '@mescius/spread-sheets-formula-panel': 'npm:@mescius/spread-sheets-formula-panel/index.js', '@mescius/spread-sheets-react': 'npm:@mescius/spread-sheets-react/index.js', '@mescius/spread-sheets': 'npm:@mescius/spread-sheets/index.js', '@grapecity/jsob-test-dependency-package/react-components': 'npm:@grapecity/jsob-test-dependency-package/react-components/index.js', 'react': 'npm:react/umd/react.production.min.js', 'react-dom': 'npm:react-dom/umd/react-dom.production.min.js', 'css': 'npm:systemjs-plugin-css/css.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: 'jsx' }, "node_modules": { defaultExtension: 'js' }, } }); })(this);