Master-Detail API
DataGrid API allows you to implement custom expand/collapse logic for master-detail rows. This example uses the expandRow(key) and collapseAll(groupIndex) methods inside the onSelectionChanged event handler to allow you to expand only one row at a time.
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<dx-data-grid
id="gridContainer"
keyExpr="ID"
[dataSource]="employees"
(onSelectionChanged)="selectionChanged($event)"
(onContentReady)="contentReady($event)"
[showBorders]="true">
<dxo-selection mode="single"></dxo-selection>
<dxo-master-detail [enabled]="false" template="detail"></dxo-master-detail>
<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://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: "system",
emitDecoratorMetadata: true,
experimentalDecorators: true
},
meta: {
'typescript': {
"exports": "ts"
},
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},
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paths: {
'npm:': 'https://unpkg.com/'
},
map: {
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'typescript': 'npm:typescript@3.5.3/lib/typescript.js',
'@angular': 'npm:@angular',
'tslib': 'npm:tslib@2.3.0/tslib.js',
'rxjs': 'npm:rxjs@6.4.0',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@21.1.5/cjs',
'devextreme/bundles/dx.all': 'npm:devextreme@21.1.5/bundles/dx.all.js',
'jszip': 'npm:jszip@3.7.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.3.1/dist/dx-quill.min.js',
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'devextreme-angular': 'npm:devextreme-angular@21.1.5',
'@devextreme/vdom': 'npm:@devextreme/vdom@1.2.2',
'inferno': 'npm:inferno@7.4.8/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat@7.4.8/dist/inferno-compat.min.js',
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},
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defaultExtension: 'ts'
},
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defaultExtension: 'js'
},
'@devextreme/vdom': {
defaultExtension: 'js'
},
'devextreme/events/utils': {
main: 'index'
},
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main: 'index'
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packageConfigPaths: [
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"npm:devextreme-angular/package.json",
"npm:devexpress-diagram/package.json",
"npm:devexpress-gantt/package.json",
]
};
System.config(window.config);
<!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/21.1.5/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.5/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@0.10.3/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>