Создание первого приложения на Angular. Получение данных и отрисовка material table
Мы продолжаем разработку нашего первого Angular приложения. В этом видео мы получим данные с бэкенда (https://jsonplaceholder.typicode.com/) и добавим отрисовку данных, используя angular material table.
users-service.ts
import { Injectable } from '@angular/core';
import {HttpClient} from '@angular/common/http';
import {Observable} from 'rxjs';
import {User} from '../../core/models/User';
@Injectable({
providedIn: 'root',
})
export class UsersService {
private readonly api = 'https://jsonplaceholder.typicode.com/'
constructor(private http: HttpClient) {
}
getUsers(): Observable<User[]> {
return this.http.get<User[]>(`${this.api}/users`);
}
}
users.ts
import {ChangeDetectionStrategy, Component, inject, OnInit} from '@angular/core';
import {UsersService} from '../../services/users-service';
import {Observable, of} from 'rxjs';
import {AsyncPipe, JsonPipe} from '@angular/common';
import {
MatCell,
MatCellDef,
MatColumnDef,
MatHeaderCell,
MatHeaderCellDef, MatHeaderRow,
MatHeaderRowDef, MatRow, MatRowDef,
MatTable
} from '@angular/material/table';
import {User} from '../../../core/models/User';
const ELEMENT_DATA = [
{position: 1, name: 'Hydrogen', weight: 1.0079, symbol: 'H'},
{position: 2, name: 'Helium', weight: 4.0026, symbol: 'He'},
{position: 3, name: 'Lithium', weight: 6.941, symbol: 'Li'},
{position: 4, name: 'Beryllium', weight: 9.0122, symbol: 'Be'},
{position: 5, name: 'Boron', weight: 10.811, symbol: 'B'},
{position: 6, name: 'Carbon', weight: 12.0107, symbol: 'C'},
{position: 7, name: 'Nitrogen', weight: 14.0067, symbol: 'N'},
{position: 8, name: 'Oxygen', weight: 15.9994, symbol: 'O'},
{position: 9, name: 'Fluorine', weight: 18.9984, symbol: 'F'},
{position: 10, name: 'Neon', weight: 20.1797, symbol: 'Ne'},
];
@Component({
selector: 'app-users',
templateUrl: './users.html',
styleUrl: './users.scss',
imports: [AsyncPipe, JsonPipe, MatHeaderRowDef, MatTable, MatHeaderCell, MatHeaderCellDef, MatHeaderCellDef, MatColumnDef, MatCellDef, MatCell, MatHeaderRow, MatRowDef, MatRow]
})
export class Users implements OnInit{
protected users$: Observable<User[]> = of([]);
private users = inject(UsersService);
protected displayedColumns: string[] = ['name', 'email', 'phone'];
dataSource = ELEMENT_DATA;
ngOnInit(): void {
this.users$ = this.users.getUsers();
}
}
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