Master-Detail API
Documentation
The DataGrid widget ships with an API that allows you to implement your own logic when expanding/collapsing master-detail rows. In this example, only one row can be expanded at any point in time. This behavior is achieved using the expandRow(key) and collapseAll() methods called in the onSelectionChanged event handler.
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<dx-data-grid
id="gridContainer"
keyExpr="ID"
[dataSource]="employees"
(onSelectionChanged)="selectionChanged($event)"
(onContentReady)="contentReady($event)"
[masterDetail]="{ enabled: false, template: 'detail' }"
[showBorders]="true">
<dxo-selection mode="single"></dxo-selection>
<dxi-column dataField="Prefix" [width]="70" caption="Title"></dxi-column>
<dxi-column dataField="FirstName"></dxi-column>
<dxi-column dataField="LastName"></dxi-column>
<dxi-column dataField="Position" [width]="170"></dxi-column>
<dxi-column dataField="State" [width]="125"></dxi-column>
<dxi-column dataField="BirthDate" dataType="date"></dxi-column>
<div *dxTemplate="let employee of 'detail'">
<div class="employeeInfo">
<img class="employeePhoto" [src]="employee.data.Picture" />
<p class="employeeNotes">{{employee.data.Notes}}</p>
</div>
</div>
</dx-data-grid>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxDataGridModule, DxTemplateModule } from 'devextreme-angular';
import { Employee, Service } from './app.service';
if(!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
templateUrl: 'app/app.component.html',
styleUrls: ['app/app.component.css'],
providers: [Service]
})
export class AppComponent {
employees: Employee[];
constructor(private service: Service) {
this.employees = service.getEmployees()
}
contentReady(e) {
if (!e.component.getSelectedRowKeys().length)
e.component.selectRowsByIndexes(0);
}
selectionChanged(e) {
e.component.collapseAll(-1);
e.component.expandRow(e.currentSelectedRowKeys[0]);
}
}
@NgModule({
imports: [
BrowserModule,
DxDataGridModule,
DxTemplateModule
],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #gridContainer {
height: 440px;
}
::ng-deep #gridContainer .dx-datagrid-content tr.dx-data-row {
cursor: pointer;
}
::ng-deep .employeeInfo .employeePhoto{
height: 140px;
float: left;
padding: 20px 20px 20px 0;
}
::ng-deep .employeeInfo .employeeNotes {
padding-top: 20px;
text-align: justify;
white-space: normal;
}
import { Injectable } from '@angular/core';
export class Employee {
ID: number;
FirstName: string;
LastName: string;
Prefix: string;
Position: string;
Picture: string;
BirthDate: string;
HireDate: string;
Notes: string;
Address: string;
State: string;
City: string;
}
let employees: Employee[] = [{
"ID": 1,
"FirstName": "John",
"LastName": "Heart",
"Prefix": "Mr.",
"Position": "CEO",
"Picture": "../../../../images/employees/01.png",
"BirthDate": "1964/03/16",
"HireDate": "1995/01/15",
"Notes": "John has been in the Audio/Video industry since 1990. He has led DevAv as its CEO since 2003. When not working hard as the CEO, John loves to golf and bowl. He once bowled a perfect game of 300.",
"Address": "351 S Hill St.",
"State": "California",
"City": "Los Angeles"
}, {
"ID": 2,
"FirstName": "Olivia",
"LastName": "Peyton",
"Prefix": "Mrs.",
"Position": "Sales Assistant",
"Picture": "../../../../images/employees/09.png",
"BirthDate": "1981/06/03",
"HireDate": "2012/05/14",
"Notes": "Olivia loves to sell. She has been selling DevAV products since 2012. Olivia was homecoming queen in high school. She is expecting her first child in 6 months. Good Luck Olivia.",
"Address": "807 W Paseo Del Mar",
"State": "California",
"City": "Los Angeles"
}, {
"ID": 3,
"FirstName": "Robert",
"LastName": "Reagan",
"Prefix": "Mr.",
"Position": "CMO",
"Picture": "../../../../images/employees/03.png",
"BirthDate": "1974/09/07",
"HireDate": "2002/11/08",
"Notes": "Robert was recently voted the CMO of the year by CMO Magazine. He is a proud member of the DevAV Management Team. Robert is a championship BBQ chef, so when you get the chance ask him for his secret recipe.",
"Address": "4 Westmoreland Pl.",
"State": "Arkansas",
"City": "Bentonville"
}, {
"ID": 4,
"FirstName": "Greta",
"LastName": "Sims",
"Prefix": "Ms.",
"Position": "HR Manager",
"Picture": "../../../../images/employees/04.png",
"BirthDate": "1977/11/22",
"HireDate": "1998/04/23",
"Notes": "Greta has been DevAV's HR Manager since 2003. She joined DevAV from Sonee Corp. Greta is currently training for the NYC marathon. Her best marathon time is 4 hours. Go Greta.",
"Address": "1700 S Grandview Dr.",
"State": "Georgia",
"City": "Atlanta"
}, {
"ID": 5,
"FirstName": "Brett",
"LastName": "Wade",
"Prefix": "Mr.",
"Position": "IT Manager",
"Picture": "../../../../images/employees/05.png",
"BirthDate": "1968/12/01",
"HireDate": "2009/03/06",
"Notes": "Brett came to DevAv from Microsoft and has led our IT department since 2012. When he is not working hard for DevAV, he coaches Little League (he was a high school pitcher).",
"Address": "1120 Old Mill Rd.",
"State": "Idaho",
"City": "Boise"
}, {
"ID": 6,
"FirstName": "Sandra",
"LastName": "Johnson",
"Prefix": "Mrs.",
"Position": "Controller",
"Picture": "../../../../images/employees/06.png",
"BirthDate": "1974/11/15",
"HireDate": "2005/05/11",
"Notes": "Sandra is a CPA and has been our controller since 2008. She loves to interact with staff so if you've not met her, be certain to say hi. Sandra has 2 daughters both of whom are accomplished gymnasts.",
"Address": "4600 N Virginia Rd.",
"State": "Utah",
"City": "Beaver"
}, {
"ID": 7,
"FirstName": "Kevin",
"LastName": "Carter",
"Prefix": "Mr.",
"Position": "Shipping Manager",
"Picture": "../../../../images/employees/07.png",
"BirthDate": "1978/01/09",
"HireDate": "2009/08/11",
"Notes": "Kevin is our hard-working shipping manager and has been helping that department work like clockwork for 18 months. When not in the office, he is usually on the basketball court playing pick-up games.",
"Address": "424 N Main St.",
"State": "California",
"City": "San Diego"
}, {
"ID": 8,
"FirstName": "Cynthia",
"LastName": "Stanwick",
"Prefix": "Ms.",
"Position": "HR Assistant",
"Picture": "../../../../images/employees/08.png",
"BirthDate": "1985/06/05",
"HireDate": "2008/03/24",
"Notes": "Cindy joined us in 2008 and has been in the HR department for 2 years. She was recently awarded employee of the month. Way to go Cindy!",
"Address": "2211 Bonita Dr.",
"State": "Arkansas",
"City": "Little Rock"
}, {
"ID": 9,
"FirstName": "Kent",
"LastName": "Samuelson",
"Prefix": "Dr.",
"Position": "Ombudsman",
"Picture": "../../../../images/employees/02.png",
"BirthDate": "1972/09/11",
"HireDate": "2009/04/22",
"Notes": "As our ombudsman, Kent is on the front-lines solving customer problems and helping our partners address issues out in the field. He is a classically trained musician and is a member of the Chamber Orchestra.",
"Address": "12100 Mora Dr",
"State": "Missouri",
"City": "St. Louis"
}];
@Injectable()
export class Service {
getEmployees() {
return employees;
}
}
// 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://github.com/DevExpress/devextreme-angular/blob/master/README.md
System.config({
transpiler: 'ts',
typescriptOptions: {
module: "commonjs",
emitDecoratorMetadata: true,
experimentalDecorators: true
},
meta: {
'typescript': {
"exports": "ts"
}
},
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
'ts': 'npm:plugin-typescript@7.0.6/lib/plugin.js',
'typescript': 'npm:typescript@2.2.2/lib/typescript.js',
'@angular/core': 'npm:@angular/core@7.1.3/bundles/core.umd.js',
'@angular/common': 'npm:@angular/common@7.1.3/bundles/common.umd.js',
'@angular/compiler': 'npm:@angular/compiler@7.1.3/bundles/compiler.umd.js',
'@angular/platform-browser': 'npm:@angular/platform-browser@7.1.3/bundles/platform-browser.umd.js',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@7.1.3/bundles/platform-browser-dynamic.umd.js',
'@angular/router': 'npm:@angular/router@7.1.3/bundles/router.umd.js',
'@angular/forms': 'npm:@angular/forms@7.1.3/bundles/forms.umd.js',
'@angular/common/http': 'npm:@angular/common@7.1.3/bundles/common-http.umd.js',
'tslib': 'npm:tslib/tslib.js',
'rxjs': 'npm:rxjs@6.3.3',
'rxjs/operators': 'npm:rxjs@6.3.3/operators',
'devextreme': 'npm:devextreme@19.1',
'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js',
'quill': 'npm:quill@1.3.6/dist/quill.js',
'devexpress-diagram': 'npm:devexpress-diagram',
'devextreme-angular': 'npm:devextreme-angular@19.1'
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts'
},
'devextreme': {
defaultExtension: 'js'
},
'rxjs': { main: 'index.js', defaultExtension: 'js' },
'rxjs/operators': { main: 'index.js', defaultExtension: 'js' },
'devextreme-angular': {
main: 'index.js',
defaultExtension: 'js'
}
}
});
<!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/19.1.3/css/dx.common.css" />
<link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/19.1.3/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@0.6.25/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>