Angular Material - Connect dataSource from external api in angular material2 - Angular Material Tutorial
Connect dataSource from external api in angular material2
Please me mindful of importing all necessary libraries required.
This example uses InMemoryDbService from angular-in-memory-web-api to provide the JSON data from mock API.
service.ts:
import { Injectable } from '@angular/core';
import { Headers, Http } from '@angular/http';
import 'rxjs/add/operator/toPromise';
@Injectable()
export class AppState {
private headers = new Headers({'Content-Type': 'application/json'});
private apiUrl = 'api/data';
constructor(private http: Http) { }
fetchFilterFields() {
console.log(this.apiUrl);
return this.http.get(this.apiUrl)
.toPromise()
.then(response => response.json().data)
.catch(this.handleError);
}
private handleError(error: any): Promise<any> {
console.error('An error occurred', error); // for demo purposes only
return Promise.reject(error.message || error);
}
}
import {Component} from '@angular/core';
import {DataSource} from '@angular/cdk';
import {BehaviorSubject} from 'rxjs/BehaviorSubject';
import {Observable} from 'rxjs/Observable';
import 'rxjs/add/observable/merge';
import { AppState } from './shared.service';
@Component({
selector: 'md-table-example',
templateUrl: 'select-form-example.html',
styleUrls: ['select-form-example.css']
})
export class SelectFormExample implements OnInit {
displayedColumns = ['id', 'name'];
dataSource: ExampleDataSource | null;
constructor(private appState: AppState){ }
ngOnInit(){
this.dataSource = new ExampleDataSource(this.appState);
}
}
export interface UserData {
id: string;
name: string;
}
export class ExampleDataSource extends DataSource<any> {
constructor(private appState: AppState) {
super();
}
subject: BehaviorSubject<Hero[]> = new BehaviorSubject<Hero[]>([]);
connect(): Observable<Hero[]> {
console.log('connect');
if (!this.subject.isStopped)
this.appState.fetchFilterFields()
.then(res => {
this.subject.next(res)
});
return Observable.merge(this.subject);
}
disconnect() {
this.subject.complete();
this.subject.observers = [];
}
}Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy angular material tutorial , angular 4 material , angular material2 , angular material example team
component.ts:
import { Injectable } from '@angular/core';
import { Headers, Http } from '@angular/http';
import 'rxjs/add/operator/toPromise';
@Injectable()
export class AppState {
private headers = new Headers({'Content-Type': 'application/json'});
private apiUrl = 'api/data';
constructor(private http: Http) { }
fetchFilterFields() {
console.log(this.apiUrl);
return this.http.get(this.apiUrl)
.toPromise()
.then(response => response.json().data)
.catch(this.handleError);
}
private handleError(error: any): Promise<any> {
console.error('An error occurred', error); // for demo purposes only
return Promise.reject(error.message || error);
}
}
import {Component} from '@angular/core';
import {DataSource} from '@angular/cdk';
import {BehaviorSubject} from 'rxjs/BehaviorSubject';
import {Observable} from 'rxjs/Observable';
import 'rxjs/add/observable/merge';
import { AppState } from './shared.service';
@Component({
selector: 'md-table-example',
templateUrl: 'select-form-example.html',
styleUrls: ['select-form-example.css']
})
export class SelectFormExample implements OnInit {
displayedColumns = ['id', 'name'];
dataSource: ExampleDataSource | null;
constructor(private appState: AppState){ }
ngOnInit(){
this.dataSource = new ExampleDataSource(this.appState);
}
}
export interface UserData {
id: string;
name: string;
}
export class ExampleDataSource extends DataSource<any> {
constructor(private appState: AppState) {
super();
}
subject: BehaviorSubject<Hero[]> = new BehaviorSubject<Hero[]>([]);
connect(): Observable<Hero[]> {
console.log('connect');
if (!this.subject.isStopped)
this.appState.fetchFilterFields()
.then(res => {
this.subject.next(res)
});
return Observable.merge(this.subject);
}
disconnect() {
this.subject.complete();
this.subject.observers = [];
}
}
dataSource: ExampleDataSource | null;
constructor(private appState: AppState){ }
ngOnInit(){
this.dataSource = new ExampleDataSource(this.appState);
}
}
export interface UserData {
id: string;
name: string;
}
export class ExampleDataSource extends DataSource<any> {
constructor(private appState: AppState) {
super();
}
subject: BehaviorSubject<Hero[]> = new BehaviorSubject<Hero[]>([]);
connect(): Observable<Hero[]> {
console.log('connect');
if (!this.subject.isStopped)
this.appState.fetchFilterFields()
.then(res => {
this.subject.next(res)
});
return Observable.merge(this.subject);
}
disconnect() {
this.subject.complete();
this.subject.observers = [];
}
}
Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy angular material tutorial , angular 4 material , angular material2 , angular material example team
component.html:
import { Injectable } from '@angular/core';
import { Headers, Http } from '@angular/http';
import 'rxjs/add/operator/toPromise';
@Injectable()
export class AppState {
private headers = new Headers({'Content-Type': 'application/json'});
private apiUrl = 'api/data';
constructor(private http: Http) { }
fetchFilterFields() {
console.log(this.apiUrl);
return this.http.get(this.apiUrl)
.toPromise()
.then(response => response.json().data)
.catch(this.handleError);
}
private handleError(error: any): Promise<any> {
console.error('An error occurred', error); // for demo purposes only
return Promise.reject(error.message || error);
}
}
import {Component} from '@angular/core';
import {DataSource} from '@angular/cdk';
import {BehaviorSubject} from 'rxjs/BehaviorSubject';
import {Observable} from 'rxjs/Observable';
import 'rxjs/add/observable/merge';
import { AppState } from './shared.service';
@Component({
selector: 'md-table-example',
templateUrl: 'select-form-example.html',
styleUrls: ['select-form-example.css']
})
export class SelectFormExample implements OnInit {
displayedColumns = ['id', 'name'];
dataSource: ExampleDataSource | null;
constructor(private appState: AppState){ }
ngOnInit(){
this.dataSource = new ExampleDataSource(this.appState);
}
}
export interface UserData {
id: string;
name: string;
}
export class ExampleDataSource extends DataSource<any> {
constructor(private appState: AppState) {
super();
}
subject: BehaviorSubject<Hero[]> = new BehaviorSubject<Hero[]>([]);
connect(): Observable<Hero[]> {
console.log('connect');
if (!this.subject.isStopped)
this.appState.fetchFilterFields()
.then(res => {
this.subject.next(res)
});
return Observable.merge(this.subject);
}
disconnect() {
this.subject.complete();
this.subject.observers = [];
}
}
dataSource: ExampleDataSource | null;
constructor(private appState: AppState){ }
ngOnInit(){
this.dataSource = new ExampleDataSource(this.appState);
}
}
export interface UserData {
id: string;
name: string;
}
export class ExampleDataSource extends DataSource<any> {
constructor(private appState: AppState) {
super();
}
subject: BehaviorSubject<Hero[]> = new BehaviorSubject<Hero[]>([]);
connect(): Observable<Hero[]> {
console.log('connect');
if (!this.subject.isStopped)
this.appState.fetchFilterFields()
.then(res => {
this.subject.next(res)
});
return Observable.merge(this.subject);
}
disconnect() {
this.subject.complete();
this.subject.observers = [];
}
}
<h2> Material Table </h2>
<div *ngIf="dataSource" class="example-container mat-elevation-z8">
<md-table #table [dataSource]="dataSource">
<!-- ID Column -->
<ng-container cdkColumnDef="id">
<md-header-cell *cdkHeaderCellDef> ID </md-header-cell>
<md-cell *cdkCellDef="let row"> {{row.id}} </md-cell>
</ng-container>
<!-- Name Column -->
<ng-container cdkColumnDef="name">
<md-header-cell *cdkHeaderCellDef> Name </md-header-cell>
<md-cell *cdkCellDef="let row"> {{row.name}} </md-cell>
</ng-container>
<md-header-row *cdkHeaderRowDef="displayedColumns"></md-header-row>
<md-row *cdkRowDef="let row; columns: displayedColumns;"></md-row>
</md-table>
</div>
Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy angular material tutorial , angular 4 material , angular material2 , angular material example team
For reference: in-memory-data-service.ts:
import { Injectable } from '@angular/core';
import { Headers, Http } from '@angular/http';
import 'rxjs/add/operator/toPromise';
@Injectable()
export class AppState {
private headers = new Headers({'Content-Type': 'application/json'});
private apiUrl = 'api/data';
constructor(private http: Http) { }
fetchFilterFields() {
console.log(this.apiUrl);
return this.http.get(this.apiUrl)
.toPromise()
.then(response => response.json().data)
.catch(this.handleError);
}
private handleError(error: any): Promise<any> {
console.error('An error occurred', error); // for demo purposes only
return Promise.reject(error.message || error);
}
}
import {Component} from '@angular/core';
import {DataSource} from '@angular/cdk';
import {BehaviorSubject} from 'rxjs/BehaviorSubject';
import {Observable} from 'rxjs/Observable';
import 'rxjs/add/observable/merge';
import { AppState } from './shared.service';
@Component({
selector: 'md-table-example',
templateUrl: 'select-form-example.html',
styleUrls: ['select-form-example.css']
})
export class SelectFormExample implements OnInit {
displayedColumns = ['id', 'name'];
dataSource: ExampleDataSource | null;
constructor(private appState: AppState){ }
ngOnInit(){
this.dataSource = new ExampleDataSource(this.appState);
}
}
export interface UserData {
id: string;
name: string;
}
export class ExampleDataSource extends DataSource<any> {
constructor(private appState: AppState) {
super();
}
subject: BehaviorSubject<Hero[]> = new BehaviorSubject<Hero[]>([]);
connect(): Observable<Hero[]> {
console.log('connect');
if (!this.subject.isStopped)
this.appState.fetchFilterFields()
.then(res => {
this.subject.next(res)
});
return Observable.merge(this.subject);
}
disconnect() {
this.subject.complete();
this.subject.observers = [];
}
}
dataSource: ExampleDataSource | null;
constructor(private appState: AppState){ }
ngOnInit(){
this.dataSource = new ExampleDataSource(this.appState);
}
}
export interface UserData {
id: string;
name: string;
}
export class ExampleDataSource extends DataSource<any> {
constructor(private appState: AppState) {
super();
}
subject: BehaviorSubject<Hero[]> = new BehaviorSubject<Hero[]>([]);
connect(): Observable<Hero[]> {
console.log('connect');
if (!this.subject.isStopped)
this.appState.fetchFilterFields()
.then(res => {
this.subject.next(res)
});
return Observable.merge(this.subject);
}
disconnect() {
this.subject.complete();
this.subject.observers = [];
}
}
<h2> Material Table </h2>
<div *ngIf="dataSource" class="example-container mat-elevation-z8">
<md-table #table [dataSource]="dataSource">
<!-- ID Column -->
<ng-container cdkColumnDef="id">
<md-header-cell *cdkHeaderCellDef> ID </md-header-cell>
<md-cell *cdkCellDef="let row"> {{row.id}} </md-cell>
</ng-container>
<!-- Name Column -->
<ng-container cdkColumnDef="name">
<md-header-cell *cdkHeaderCellDef> Name </md-header-cell>
<md-cell *cdkCellDef="let row"> {{row.name}} </md-cell>
</ng-container>
<md-header-row
*cdkHeaderRowDef="displayedColumns"></md-header-row>
<md-row *cdkRowDef="let row; columns: displayedColumns;"></md-row>
</md-table>
</div>
import { InMemoryDbService } from 'angular-in-memory-web-api';
export class InMemoryDataService implements InMemoryDbService {
createDb() {
const data = [
{ id: 1, name: 'Ironcast' },
{ id: 2, name: 'Mr. Nice' },
{ id: 3, name: 'Narco' },
{ id: 4, name: 'Bombasto' },
{ id: 5, name: 'Celeritas' },
{ id: 6, name: 'Magneta' },
{ id: 7, name: 'RubberMan' },
{ id: 8, name: 'Dynama' },
{ id: 9, name: 'Dr. IQ' },
{ id: 10, name: 'Magma' },
{ id: 11, name: 'Tornado' }
];
return {data};
}
}