Question

我需要检查用户是否已选择ngFor表单，然后在提交具有新值的表单时重定向到另一个页面。

HTML：

<mat-select placeholder="Tratament" [(ngModel)]="model.TratamentA" name="TratamentA" #TratamentA (change)="onChange(TratamentA.value)"
 disableRipple>
    <mat-option value="Sutent (Sunitinibum) 25mg">Sutent (Sunitinibum) 25mg</mat-option>
    <mat-option value="Sutent (Sunitinibum) 37.5mg">Sutent (Sunitinibum) 37.5mg</mat-option>
    <mat-option value="Sutent (Sunitinibum) 50mg">Sutent (Sunitinibum) 50mg</mat-option>
</mat-select>

<div class="row">
            <button mat-raised-button color="primary" type="submit" value="submit">Update Patient</button>
            <button mat-raised-button color="accent" (click)="goBack()">Anulare</button>
          </div>

TS

private onChange(TratamentAValue): any {
    console.log(TratamentAValue);
}

onChangeSubmit(){
    const CONDITION = true;
    const DATA = this.onChange(this.TratamentAValue);
    const ERROR = new Error(this.goBack())

    const promise =
        new Promise((resolve, reject) => {
            // do some async stuff
            this.router.navigate(['/pacient/ra', this.id]);

            if (CONDITION) resolve(DATA);
            else reject(ERROR);
        })

    updatePacient() {
        this.pacService
            .updatePacient(this.model)
            .subscribe(() => this.onChangeSubmit());

    }
  model = new Pacient();
  id = this.route.snapshot.params['id'];
  private getSinglePacient(): any {
    this.pacService
        .getPacient(this.id)
        .subscribe(pacient => {
          this.model = pacient[0];
        })
  }
    }

为了简短起见，我需要检查某个字段的值是否已更改，然后将用户重定向到所需的组件。它总是重定向到['/ pacient / ra'，this.id]）；仅当从列表中选择新的处理方式时，才需要重定向用户。提交表单后，所有这些活动都开始...

如何检查一个函数是否完成，然后调用另一个函数

0 个答案: