将数据绑定到另一个组件，然后使用@ Input，@ Output和EventEmitter以成角度的方式使用它

Question

I am trying to pass the one team from array of team in another component and use it. I am getting selected team in same component(team) as console.log but not getting in the another component(team-detail)

Actually, I want to use team id to fetch details of other detail about team from API. please help me around this TIA

Team.component.ts

    export class TeamsComponent implements OnInit {

  @Output() selectedTeam = new EventEmitter<any>();

  constructor(private general: GeneralService) {
  }

  teamsObject: any;
  teams: [];

  ngOnInit() {
    this.loadTeams();
  }

  loadTeams() {
    this.general.getTeams().subscribe(data => {
      this.teamsObject = data;
      this.teams = this.teamsObject.teams;
    });
  }

  onSelectTeam(team: any) {
    this.selectedTeam.emit(team);
  }

}

Team.component.html

<div class="container-fluid " >
<div class="row " >
  <div class="col-xs-12" *ngFor="let team of teams">
    <div class="card border-dark " style="width: 250px; height: 450px; margin: 10px;" (click)="onSelectTeam(team)">
      <img class="card-img-top embed-responsive" src="{{team.crestUrl}}" alt="Card image cap">
      <div class="card-body">
        <h5 class="card-title">{{team.name}}</h5>
        <p class="card-text">{{team.address}}</p>
        <a href="{{team.website}}" class="btn btn-primary" target="_blank">Visit Website</a>
      </div>
    </div>
  </div>
</div>
  <app-team-detail *ngIf="selectedTeam" [team]="selectedTeam"></app-team-detail>
</div>

Team-detail component

export class TeamDetailComponent implements OnInit {

  @Input() team: any;

  constructor() {
  }

  ngOnInit() {
  }

}

team-detail template(this template only for demo purpose.)

<p>
  {{team.name}}
  {{team.crestUrl}}
  {{team.address}}
  {{team.website}}
</p>

Answer 1

“Output” identifies the events a component can fire to send information up the hierarchy to its parent. In you case you want to send information from parent component to child. So you don't need to use Output.

Team.component.ts

export class TeamsComponent implements OnInit {

  selectedTeam:any;

  constructor(private general: GeneralService) {
  }

  teamsObject: any;
  teams: [];

  ngOnInit() {
    this.loadTeams();
  }

  loadTeams() {
    this.general.getTeams().subscribe(data => {
      this.teamsObject = data;
      this.teams = this.teamsObject.teams;
    });
  }

  onSelectTeam(team: any) {
    this.selectedTeam = team;
  }

}

team.component.html

 <app-team-detail *ngIf="selectedTeam" [team]="selectedTeam"></app-team-detail>

team-details template

<p *ngIf="team">
  {{team.name}}
  {{team.crestUrl}}
  {{team.address}}
  {{team.website}}
</p>

Answer 2

create your property with getter and setter in you child component , rest of code remain as is

_team: any;
get team(): any {
    return this._team;
}

@Input()
set team(value: any) {
    this._team = value;
}

in child

<p *ngIf="team">
  {{team.name}}
  {{team.crestUrl}}
  {{team.address}}
  {{team.website}}
</p>