<dx-load-panel
[position]="loadPanelPosition"
[visible]="isLoading">
</dx-load-panel>
<dx-data-grid
id="gridContainer"
keyExpr="OrderID"
[dataSource]="orders$ | async"
[showBorders]="true"
[repaintChangesOnly]="true"
(onSaving)="onSaving($event)">
<dxo-editing
mode="row"
[allowAdding]="true"
[allowDeleting]="true"
[allowUpdating]="true"
[(changes)]="changes"
[(editRowKey)]="editRowKey"
></dxo-editing>
<dxi-column dataField="OrderID" [allowEditing]="false"></dxi-column>
<dxi-column dataField="ShipName"></dxi-column>
<dxi-column dataField="ShipCountry"></dxi-column>
<dxi-column dataField="ShipCity"></dxi-column>
<dxi-column dataField="ShipAddress"></dxi-column>
<dxi-column dataField="OrderDate" dataType="date"></dxi-column>
<dxi-column dataField="Freight"></dxi-column>
</dx-data-grid>
<div class="options">
<div class="caption">Options</div>
<div class="option">
<span>Edit Row Key:</span>
<div id="editRowKey">{{editRowKey === null ? "null" : editRowKey.toString()}}</div>
</div>
<div class="option">
<span>Changes:</span>
<div id="changes">{{changesText}}</div>
</div>
</div>
import { NgModule, Component, OnInit, OnDestroy, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { HttpClientModule } from '@angular/common/http';
import { DxDataGridModule, DxLoadPanelModule } from 'devextreme-angular';
import { Service, Order, Change } from './app.service';
import { Observable, Subscription } from 'rxjs';
if (!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
templateUrl: 'app/app.component.html',
styleUrls: ['app/app.component.css'],
providers: [Service],
preserveWhitespaces: true
})
export class AppComponent implements OnInit, OnDestroy {
ordersSubscription: Subscription;
orders$: Observable<Order[]>;
changes: Change<Order>[] = [];
editRowKey?: number = null;
isLoading = false;
loadPanelPosition = { of: '#gridContainer' };
constructor(private service: Service) { }
ngOnInit() {
this.orders$ = this.service.getOrders();
this.isLoading = true;
this.ordersSubscription = this.orders$.subscribe(() => {
this.isLoading = false;
});
}
get changesText(): string {
return JSON.stringify(this.changes.map((change) => ({
type: change.type,
key: change.type !== 'insert' ? change.key : undefined,
data: change.data
})), null, ' ');
}
onSaving(e: any) {
const change = e.changes[0];
if(change) {
e.cancel = true;
e.promise = this.processSaving(change);
}
}
async processSaving(change: Change<Order>) {
this.isLoading = true;
try {
await this.service.saveChange(change);
this.editRowKey = null;
this.changes = [];
} finally {
this.isLoading = false;
}
}
ngOnDestroy() {
this.ordersSubscription.unsubscribe();
}
}
@NgModule({
imports: [
BrowserModule,
DxDataGridModule,
DxLoadPanelModule,
HttpClientModule
],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #gridContainer {
height: 440px;
}
::ng-deep .options {
padding: 20px;
margin-top: 20px;
background-color: rgba(191, 191, 191, 0.15);
}
::ng-deep .caption {
margin-bottom: 10px;
font-weight: 500;
font-size: 18px;
}
::ng-deep .option {
margin-bottom: 10px;
}
::ng-deep .option > span {
position: relative;
margin-right: 10px;
}
::ng-deep .option > div {
display: inline-block;
font-weight: bold;
}
import { Injectable } from '@angular/core';
import { HttpClient, HttpParams } from '@angular/common/http';
import { BehaviorSubject, Observable } from 'rxjs';
import applyChanges from 'devextreme/data/apply_changes';
export class Order {
OrderID: number;
ShipName: string;
ShipCountry: string;
ShipCity: string;
ShipAddress: string;
OrderDate: string;
Freight: number;
}
export class Change<T> {
type: "insert" | "update" | "remove";
key: any;
data: Partial<T>;
}
@Injectable()
export class Service {
private orders$ = new BehaviorSubject<Order[]>([]);
private url = "https://js.devexpress.com/Demos/Mvc/api/DataGridWebApi";
constructor(private http: HttpClient) { }
updateOrders(change: Change<Order>, data: Order) {
change.data = data;
const orders = applyChanges(this.orders$.getValue(), [change], { keyExpr: "OrderID" });
this.orders$.next(orders);
}
getOrders(): Observable<Order[]> {
this.http.get(`${this.url}/Orders?skip=700`, { withCredentials: true }).toPromise().then((data) => {
this.orders$.next(data["data"]);
});
return this.orders$.asObservable();
}
async insert(change: Change<Order>): Promise<Order> {
const httpParams = new HttpParams({ fromObject: { values: JSON.stringify(change.data) } });
const httpOptions = { withCredentials: true, body: httpParams };
const data = await this.http.post<Order>(`${this.url}/InsertOrder`, httpParams, httpOptions).toPromise();
this.updateOrders(change, data);
return data;
}
async update(change: Change<Order>): Promise<Order> {
const httpParams = new HttpParams({ fromObject: { key: change.key, values: JSON.stringify(change.data) } });
const httpOptions = { withCredentials: true, body: httpParams };
const data = await this.http.put<Order>(`${this.url}/UpdateOrder`, httpParams, httpOptions).toPromise();
this.updateOrders(change, data);
return data;
}
async remove(change: Change<Order>): Promise<Order> {
const httpParams = new HttpParams({ fromObject: { key: change.key } });
const httpOptions = { withCredentials: true, body: httpParams };
const data = await this.http.delete<Order>(`${this.url}/DeleteOrder`, httpOptions).toPromise();
this.updateOrders(change, data);
return data;
}
async saveChange(change: Change<Order>): Promise<Order> {
switch (change.type) {
case "insert":
return this.insert(change);
case "update":
return this.update(change);
case "remove":
return this.remove(change);
}
}
};
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular and DevExtreme here:
// https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
System.config({
transpiler: 'ts',
typescriptOptions: {
module: "system",
emitDecoratorMetadata: true,
experimentalDecorators: true
},
meta: {
'typescript': {
"exports": "ts"
},
'devextreme/localization.js': {
"esModule": true
}
},
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js',
'typescript': 'npm:typescript@3.5.3/lib/typescript.js',
'@angular': 'npm:@angular',
'tslib': 'npm:tslib@2.1.0/tslib.js',
'rxjs': 'npm:rxjs@6.4.0',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.26.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@20.2.6',
'jszip': 'npm:jszip@3.6.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.10.3/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.18',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.24',
'devextreme-angular': 'npm:devextreme-angular@20.2.6',
'preact': 'npm:preact@10.5.13/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.13/hooks/dist/hooks.js'
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts'
},
'devextreme': {
defaultExtension: 'js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
packageConfigPaths: [
"npm:@angular/*/package.json",
"npm:@angular/common/*/package.json",
"npm:rxjs/package.json",
"npm:rxjs/operators/package.json",
"npm:devextreme-angular/*/package.json",
"npm:devextreme-angular/ui/*/package.json",
"npm:devextreme-angular/package.json",
"npm:devexpress-diagram/package.json",
"npm:devexpress-gantt/package.json",
]
});
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.light.css" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.10.2/dist/zone.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script src="config.js"></script>
<script>
System.import('app').catch(console.error.bind(console));
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
</body>
</html>