为什么数组在Angular项目中仅带来一个对象? [英] Why array only brings one object in Angular project?

问题描述

我正在使用League of Legends API，更具体地讲就是他们带来的冠军json.

I'm working with the League of Legends API, more specific with the champion json they bring.

我使用Angular进行了这项服务:

I have this service made with Angular:

import { Injectable } from '@angular/core';
import { HttpClient, HttpHeaders} from '@angular/common/http';

const httpOptions = {
  headers: new HttpHeaders({'Content-Type': 'application/json'})
}

@Injectable({
  providedIn: 'root'
})
export class ChampionsService {

  constructor(private http: HttpClient) { }

  getChampions(){
    return this.http.get('http://ddragon.leagueoflegends.com/cdn/10.23.1/data/es_ES/champion.json');
  }

}

这是我的.ts文件:

import { Component, OnInit } from '@angular/core';
import {ChampionsService } from '../../services/champions.service';

@Component({
  selector: 'app-champions',
  templateUrl: './champions.component.html',
  styleUrls: ['./champions.component.css']
})

export class ChampionsComponent implements OnInit {

  public champions;
  public arrayChampions;
  
  
  constructor(private championsService:ChampionsService) { }

  ngOnInit(): void {
    this.getAllChampions();
  }

  getAllChampions(){
    this.championsService.getChampions().subscribe(
      data => { this.champions = data, 
        this.arrayChampions = Object.entries(this.champions.data).map(([k,v]) => ({ [k]:v })),
        this.ArrayIterator(); 
      },
      err => {console.error(err)},
      () => console.log("Champions cargados")
    );
  }

  ArrayIterator() {
    let IteratableArray = Array();
    for (let item of Object.keys(this.arrayChampions[0])) {
      var eventItem = Object.values(this.arrayChampions[0]);
      IteratableArray.push(eventItem);
    }
    this.arrayChampions = IteratableArray[0];
  }
}

这是html:

<p>champions works!</p>
{{arrayChampions | json}}
 <!-- Cards -->
<div *ngFor="let arrayChampion of arrayChampions" class="card mb-3">
    <div class="card-header">
    </div>
    <div class="card-body">
        <blockquote class="blockquote mb-0">
            <a class="text-decoration-none">{{arrayChampion.id}}</a>
        </blockquote>
    </div>
    <div class="card-footer">
    </div>
</div>

如您所见，var"arrayChampions"仅在我应该了解所有冠军的情况下才带来第一个冠军(Atrox)(我是javascript和Angular的新手).

As you can see, the var "arrayChampions" only brings the first champion (Atrox) when it should bring all the champions as I understand (I'm new at javascript and Angular).

推荐答案

根据您的实例，我在此处创建并堆叠闪电，并且使整个 arrayChampions 遍历其值.

As per your exmaple I have created and stackblitz here, And it made the whole arrayChampions Iterate over its values.

请找到可用的状态记录这里

示例HTML:

<hello name="{{ name }}"></hello>
<!-- {{this.products |json}} -->
<ul>
    <li *ngFor="let champ of products | keyvalue">
        <label style="font-size: 20px;font-weight: bold;color: red;">
      {{champ.key}}
    </label>
        <ul *ngFor="let item of champ.value | keyvalue">
            <li>
                {{item.key}} : {{item.value}}
                <ul *ngFor="let sub of item.value | keyvalue">
                    <li>
                        {{sub.key}} : {{sub.value}}
                    </li>
                </ul>
            </li>
        </ul>
    </li>
</ul>

样本component.ts:

import { Component } from "@angular/core";
import { HttpClient } from "@angular/common/http";
import { map, catchError, tap } from "rxjs/operators";

@Component({
  selector: "my-app",
  templateUrl: "./app.component.html",
  styleUrls: ["./app.component.css"]
})
export class AppComponent {
  apiURL: string =
    "https://ddragon.leagueoflegends.com/cdn/10.23.1/data/es_ES/champion.json";
  name = "Angular";
  products = [];

  constructor(private httpClient: HttpClient) {}

  ngOnInit() {
    this.getChamp();
  }

  getChamp() {
    this.httpClient.get(this.apiURL).subscribe((data: any) => {
      this.products = data.data;
      Object.keys(data.data).map((key: any, obj: any) => obj[key]);
    });
  }
}

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