Overview (Angular)

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 Angular.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import { Component, enableProdMode, NgModule } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import { FormsModule } from '@angular/forms'; // import { WjGridModule } from '@grapecity/wijmo.angular2.grid'; import { Snapshot } from '@grapecity/wijmo.cloud'; import { isIE, isSafari } from '@grapecity/wijmo'; // @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { snapshot: Snapshot; constructor() { // IE and Safari are not supported if (isIE() || isSafari()) { this.snapshot = null; 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'); this.snapshot = new Snapshot(restaurants, { //query: restaurants.where('type', 'in', ['Japanese', 'German' ]), //deferCommits: true, //pageSize: 5 }); } } // @NgModule({ imports: [WjGridModule, BrowserModule, FormsModule], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } // enableProdMode(); // Bootstrap application with hash style navigation and global services. platformBrowserDynamic().bootstrapModule(AppModule);
<!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> <!-- Polyfills --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/dist/zone.min.js"></script> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.js"></script> <script src="systemjs.config.js"></script> <script> // workaround to load 'rxjs/operators' from the rxjs bundle System.import('rxjs').then(function (m) { System.set(SystemJS.resolveSync('rxjs/operators'), System.newModule(m.operators)); System.import('./src/app.component'); }); </script> </head> <body> <app-component></app-component> </body> </html>
<div *ngIf="snapshot" class="container-fluid"> <wj-flex-grid selectionMode="MultiRange" [showMarquee]="true" [isReadOnly]="true" [itemsSource]="snapshot"> <wj-flex-grid-column binding="id" header="ID"></wj-flex-grid-column> <wj-flex-grid-column binding="name" header="Name"></wj-flex-grid-column> <wj-flex-grid-column binding="type" header="Type"></wj-flex-grid-column> </wj-flex-grid> </div> <div *ngIf="!snapshot" class="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>
.wj-flexgrid { height: 300px; }
(function (global) { System.config({ transpiler: 'ts', typescriptOptions: { tsconfig: true }, meta: { 'typescript': { "exports": "ts" }, '*.css': { loader: 'css' } }, paths: { // paths serve as alias 'npm:': 'node_modules/' }, // map tells the System loader where to look for things map: { 'core-js': 'npm:core-js/client/shim.min.js', 'zone': 'npm:zone.js/dist/zone.min.js', //'reflect-metadata': 'npm:reflect-metadata/Reflect.js', 'rxjs': 'npm:rxjs/bundles/rxjs.umd.min.js', //'rxjs': 'npm:rxjs', //'rxjs/operators': 'npm:rxjs/operators', '@angular/core': 'npm:@angular/core/bundles/core.umd.min.js', '@angular/common': 'npm:@angular/common/bundles/common.umd.min.js', '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.min.js', '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.min.js', '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.min.js', '@angular/http': 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extension packages: { src: { defaultExtension: 'ts' }, rxjs: { defaultExtension: 'js' }, // 'rxjs': {main: 'index.js', defaultExtension: 'js' }, // 'rxjs/ajax': {main: 'index.js', defaultExtension: 'js' }, //'rxjs/operators': {main: 'index.js', defaultExtension: 'js' }, // 'rxjs/testing': {main: 'index.js', defaultExtension: 'js' }, // 'rxjs/webSocket': {main: 'index.js', defaultExtension: 'js' }, "node_modules": { defaultExtension: 'js' }, wijmo: { defaultExtension: 'js', } } }); })(this);