Overview (React)

This sample demonstrates the basic features of the Snapshot class.

The Snapshot class allows you to load and edit data stored in Firestore databases, with real time updates. To use it, you must load the Firestore web client library.

Editing requires authentication and is not demonstrated in this sample.

Learn about FlexGrid | Snapshot Overview Documentation | Cloud API Reference

This example uses React.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './app.css'; // import * as React from 'react'; import * as ReactDOM from 'react-dom'; // import { Snapshot } from '@grapecity/wijmo.cloud'; import { FlexGrid, FlexGridColumn } from '@grapecity/wijmo.react.grid'; import { isIE, isSafari } from '@grapecity/wijmo'; // class App extends React.Component { // constructor(props) { super(props); // IE and Safari are not supported if (isIE() || isSafari()) { return; } // initialize the Firestore web client libraries const firebaseConfig = { apiKey: "AIzaSyCvuXEzP57I5CQ9ifZDG2_K8M3nDa1LOPE", authDomain: "test-9c0be.firebaseapp.com", databaseURL: "https://test-9c0be.firebaseio.com", projectId: "test-9c0be", storageBucket: "test-9c0be.appspot.com", messagingSenderId: "60621001861", appId: "1:60621001861:web:41612ef8a472741dbd45ec" }; const firebase = window['firebase']; firebase.initializeApp(firebaseConfig); // create the Snapshot const db = firebase.firestore(); const restaurants = db.collection('restaurants'); const snapshot = new Snapshot(restaurants, { //query: restaurants.where('type', 'in', ['Japanese', 'German' ]), //deferCommits: true, //pageSize: 5 }); // expose snapshot this.state = { snapshot: snapshot }; } render() { if (!isIE() && !isSafari()) { return <div className='container-fluid'> <FlexGrid selectionMode="MultiRange" showMarquee={true} isReadOnly={true} itemsSource={this.state.snapshot}> <FlexGridColumn binding="id" header="ID"/> <FlexGridColumn binding="name" header="Name"/> <FlexGridColumn binding="type" header="Type"/> </FlexGrid> </div>; } else { return <div className='container-fluid'> <h4> IE and Safari are not supported </h4> <p> Sorry, this sample requires features that are not available in IE or Safari. Please try it in Chrome, Firefox, or Edge. </p> <p> Running the firestore client libraries in IE or Safari is possible, but requires a polyfill. For more information, please see <a href="https://firebase.google.com/support/guides/environments_js-sdk"> Supported environments for the Firebase JavaScript SDK</a>. </p> </div>; } } } // ReactDOM.render(<App />, document.getElementById('app'));
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo Snapshot Overview</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Firestore web client libraries --> <script src="https://www.gstatic.com/firebasejs/7.15.1/firebase-app.js"></script> <script src="https://www.gstatic.com/firebasejs/7.15.1/firebase-firestore.js"></script> <!-- SystemJS --> <script src="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"></div> </body> </html>
.wj-flexgrid { height: 300px; }
(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: { 'jszip': 'npm:jszip/dist/jszip.js', '@grapecity/wijmo': 'npm:@grapecity/wijmo/index.js', '@grapecity/wijmo.input': 'npm:@grapecity/wijmo.input/index.js', '@grapecity/wijmo.styles': 'npm:@grapecity/wijmo.styles', '@grapecity/wijmo.cultures': 'npm:@grapecity/wijmo.cultures', '@grapecity/wijmo.chart': 'npm:@grapecity/wijmo.chart/index.js', '@grapecity/wijmo.chart.analytics': 'npm:@grapecity/wijmo.chart.analytics/index.js', '@grapecity/wijmo.chart.animation': 'npm:@grapecity/wijmo.chart.animation/index.js', '@grapecity/wijmo.chart.annotation': 'npm:@grapecity/wijmo.chart.annotation/index.js', '@grapecity/wijmo.chart.finance': 'npm:@grapecity/wijmo.chart.finance/index.js', '@grapecity/wijmo.chart.finance.analytics': 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'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);