如何在 Angular 中使用 ngModel 和表格中的 ngFor 构建 JSON 数据？

Question

如何使用 ngModel 构建 JSON 数据，它是组件在表单内，表在表单外，我让 ngModel 在表中使用 ngFor 重复。这是我的 html 的样子：

app.component.html：

<div>
    <form>
        <div class="form-group row">
            Nama Role : <input type="text" [(ngModel)]="nama_role" [ngModelOptions]="{standalone: true}" class="form-control" placeholder="Nama Role" pattern="[a-zA-Z-0-9. ]+">
        </div>
    </form>

    <div>
        Pilih Hak :
        <table class="mytable">
            <tr>
                <th>No</th>
                <th>Kode Aplikasi</th>
                <th>Nama Aplikasi</th>
                <th>View?</th>
                <th>Insert?</th>
                <th>Edit?</th>
                <th>Delete?</th>
            </tr>
            <tr *ngFor="let sources of source; let a=index">
                <td>{{a + 1}}</td>
                <td>{{sources.KODE_APPLICATION}}</td>
                <td>{{sources.NAMA_APPLICATION}}</td>
                <td><input type="checkbox" [(ngModel)]="sources.hak_akses" (change)="toggle($event)" /> {{sources.HAK_AKSES}}</td>
                <td><input type="checkbox" [(ngModel)]="sources.hak_insert" (change)="toggle($event)" />{{sources.HAK_INSERT}}</td>
                <td><input type="checkbox" [(ngModel)]="sources.hak_edit" (change)="toggle($event)" />{{sources.HAK_EDIT}}</td>
                <td><input type="checkbox" [(ngModel)]="sources.hak_delete" (change)="toggle($event)" />{{sources.HAK_DELETE}}</td>
            </tr>
        </table>
    </div>

    <div class="row show-grid">
        <button class="btn btn-primary" (click)="save()">Save</button>
    </div>

</div>

这是我的 app.component.ts

export class frmInputMasterRole {

  public sKodeRole: any;
  sStorage:any;
  hak_akses:any;
  hak_insert:any;
  hak_edit:any;
  hak_delete:any;
  private busyloadevent: IBusyConfig = Object.assign({}, BUSY_CONFIG_DEFAULTS);
  marked = false;

  constructor(private frmInputMasterRoleService: FrmInputMasterRoleService, protected router: Router) {
    this.sKodeRole = 'Auto Generated';
    this.sStorage = sessionStorage.getItem('mAuth');
    this.sStorage = JSON.parse(this.sStorage);

    this.busyloadevent.busy = this.frmInputMasterRoleService.getListRoleDetail().then(
      data => {
        this.source = data;
        console.log(data);
        for (var i of this.source) {
          this.hak_akses = i.HAK_AKSES;
        }
      },
      err => {
           console.log(err);
          }
      }
    );

  }

  save(){
    console.log(this.hak_akses);
  }

  toggle(e){
    console.log(e.target.checked)
  }

  cancel(){
    this.router.navigate(['/pages/master/rolelist']);
  }

}

这是使用我的 REST API 时的 JSON 数据，它在源类型中使用 ngFor 循环：

[
   {
      "No":"1",
      "KODE_APPLICATION":"APPL00001",
      "NAMA_APPLICATION":"Master Bass",
      "HAK_AKSES":0,
      "HAK_INSERT":0,
      "HAK_EDIT":0,
      "HAK_DELETE":0
   },
   {
      "No":"2",
      "KODE_APPLICATION":"APPL00002",
      "NAMA_APPLICATION":"Master Customer",
      "HAK_AKSES":0,
      "HAK_INSERT":0,
      "HAK_EDIT":0,
      "HAK_DELETE":0
   },
   {
      "No":"3",
      "KODE_APPLICATION":"APPL00003",
      "NAMA_APPLICATION":"Master Teknisi",
      "HAK_AKSES":0,
      "HAK_INSERT":0,
      "HAK_EDIT":0,
      "HAK_DELETE":0
   }
]

我想要的是在检查最后一行时构建看起来像这样的 JSON 数据：

{
  "nama_role":test, 
  "details": [{
  "KODE_APPLICATION":"APPL00003",
  "NAMA_APPLICATION":"Master Teknisi",
  "HAK_AKSES":1,
  "HAK_INSERT":0,
  "HAK_EDIT":0,
  "HAK_DELETE":0
   }]
}

我该怎么做？我不知道从哪里开始，因为有一个带有 ngModel 的表与 ngFor 循环

Answer 1

代码附在下面：

    @Component({
    selector: 'my-app',
    template: `<form>
                    <div class="form-group row">
                        Nama Role : <input type="text" [(ngModel)]="nama_role" [ngModelOptions]="{standalone: true}" class="form-control" placeholder="Nama Role" pattern="[a-zA-Z-0-9. ]+">
                    </div>
               </form>

               <table>
                    <tr>
                        <th>No</th>
                        <th>Kode Aplikasi</th>
                        <th>Nama Aplikasi</th>
                        <th>View?</th>
                        <th>Insert?</th>
                        <th>Edit?</th>
                        <th>Delete?</th>
                    </tr>
                    <tr *ngFor="let sources of source; let a=index">
                        <td>{{sources.KODE_APPLICATION}}</td>
                        <td>{{sources.NAMA_APPLICATION}}</td>
                        <td><input type="checkbox"  [checked]="sources.HAK_AKSES" [(ngModel)]="sources.HAK_AKSES" (change)="toggle(a, sources.HAK_AKSES, \'HAK_AKSES\')"/> {{sources.HAK_AKSES}}</td>
                        <td><input type="checkbox" [checked]="sources.HAK_INSERT" [(ngModel)]="sources.HAK_INSERT"  (change)="toggle(a, sources.HAK_INSERT, \'HAK_INSERT\')" />{{sources.HAK_INSERT}}</td>
                        <td><input type="checkbox" [checked]="sources.HAK_EDIT"  [(ngModel)]="sources.HAK_EDIT" (change)="toggle(a, sources.HAK_EDIT, \'HAK_EDIT\')" />{{sources.HAK_EDIT}}</td>
                        <td><input type="checkbox" [checked]="sources.HAK_DELETE" [(ngModel)]="sources.HAK_DELETE" (change)="toggle(a, sources.HAK_DELETE, \'HAK_DELETE\')" />{{sources.HAK_DELETE}}</td>
                    </tr>
                </table>

                <div class="row show-grid">
                    <button class="btn btn-primary" (click)="save()">Save</button>
                </div> 
                <custom-comp [myFunc]="handleClick()"></custom-comp>
              `
})

export class MainComponent {

    source = [];

    ngOnInit() {

        this.source = [{
          "No":"1",
          "KODE_APPLICATION":"APPL00001",
          "NAMA_APPLICATION":"Master Bass",
          "HAK_AKSES":1,
          "HAK_INSERT":1,
          "HAK_EDIT":1,
          "HAK_DELETE":0
       },
       {
          "No":"2",
          "KODE_APPLICATION":"APPL00002",
          "NAMA_APPLICATION":"Master Customer",
          "HAK_AKSES":0,
          "HAK_INSERT":0,
          "HAK_EDIT":0,
          "HAK_DELETE":0
       },
       {
          "No":"3",
          "KODE_APPLICATION":"APPL00003",
          "NAMA_APPLICATION":"Master Teknisi",
          "HAK_AKSES":1,
          "HAK_INSERT":0,
          "HAK_EDIT":0,
          "HAK_DELETE":0
       }
    ];
    }

    save() {
        let payload = {
            "nama_role": this.nama_role,
            "details": this.source
        };

        console.log(payload);
    }

    toggle(index, val, key) {
        this.source[index][key] = val ? 1 : 0;
    }
}

干杯！