Question

我想将搜索组件实现为可重用组件，基本上这个搜索组件会在我输入内容时调用网络服务。这样它就会在那个 url 中搜索并获取数据并显示它。我在 lib 文件夹中制作了这个组件并在 app 组件中使用它，但搜索没有发生，事实上过滤器方法没有在组件中触发。请在下面检查我的组件代码。

ngOnInit() {
console.log('input variables are ', this._appId, this._sandbox, this._typeId);
this.bpmService.login().subscribe((data) => {
  console.log('=== Login Success ===');
});
this.filteredOptions = this.myControl.valueChanges
  .pipe(
    startWith(''),
    debounceTime(10),
    distinctUntilChanged(),
    switchMap(val => {
      return this.filter(val);
    })
  );

}

 displayFn(user: Case): any {
    return user && JSON.parse(user.summary).field1 ? JSON.parse(user.summary).field1 : 
     this._cases;
 }

 private filter(val: string): Observable<any[]> {
    console.log('filter value is ', val);
    return this.bpmService.getCases(this._sandbox, this._appId, this._typeId)
       .pipe(
           map(response => response.filter((element: { summary: string; }) => {
         console.log('Response is ====', response);
            return JSON.parse(element.summary).field1.match(val);
            }))
           );

}

这是我的 HTML

<div class="la-case-search">

  <mat-label>Search within cases</mat-label>
  <div class="la-case-search__input">
    <input type="text" matInput [formControl]="myControl" [matAutocomplete]="auto">
    <mat-icon svgIcon="search"></mat-icon>

  </div>
  <mat-autocomplete #auto="matAutocomplete" [displayWith]="displayFn" (optionSelected) = "selectedCase($event.option.value)">
    <mat-option *ngFor="let option of filteredOptions | async" [value]="option">
      {{option.summary ? option.summary:''}}
    </mat-option>
  </mat-autocomplete>

</mat-form-field>

如何将搜索组件作为可重用组件作为角度元素

0 个答案: