This Angular component displays a list of polls that are fetched from the server and has a slide toggle giving the authenticated user the option to display all polls or just the ones that the user has authored. I use Angular Material and Angular Flex Layout.I'm specifically looking for feedback regarding best practices and how I handled displaying polls conditionally, but welcome all feedback. I chose to keep most of the conditional logic in the component instead of in the template but I'm not sure that is in accordance with Angular best practices.poll-list.component.html<div fxLayout=column fxLayoutAlign=center style=margin-top: 50px;>  <md-slide-toggle *ngIf=isLoggedIn() (change)=displayMyPolls() fxFlexAlign=center>Show only my polls</md-slide-toggle>  <md-nav-list fxFlexAlign=center>    <a md-list-item *ngFor=let poll of pollsToDisplay [routerLink]=['/poll', poll.pollId] class=bottom-border>      <md-icon md-list-icon>poll</md-icon>      <h1 md-line>{{poll?.question}}</h1>      <p md-line>{{poll?.getTotalVotes()}} votes</p>    </a>  </md-nav-list></div>poll-list.component.tsimport { Component, OnInit } from '@angular/core';import { PollService } from './poll.service';import { AuthService } from '../auth/auth.service';import { Poll } from './poll.model';@Component({  selector: 'app-poll-list',  templateUrl: './poll-list.component.html',  styleUrls: ['./poll-list.component.css']})export class PollListComponent implements OnInit {  polls: Poll[] = [];  pollsToDisplay: Poll[] = [];  showOnlyMyPolls = false;  constructor(private pollService: PollService, private authService: AuthService) { }  ngOnInit() {    this.pollService.getPolls()      .subscribe(                (polls: Poll[]) => {                    this.polls = polls;                    this.pollsToDisplay = polls;                }            );  }  displayMyPolls() {    this.showOnlyMyPolls = !this.showOnlyMyPolls;    if (this.showOnlyMyPolls) {      this.pollsToDisplay = this.polls.filter((poll) => {        return this.authService.isLoggedInUser(poll.userId);      });    } else {      this.pollsToDisplay = this.polls;    }  }  isLoggedIn() {    return this.authService.isLoggedIn();  }}
Angular 2 Component conditionally displaying a list of elements from an array
html;html5;typescript;angular 2+