我想在我自己的组件中包装一个Primeng Autocomplete组件,但无法弄清楚HAW提供一个FormControlname:
错误:未接收(在承诺中(:错误:formControlname必须与父级指令一起使用。
包装器组件html:
<p-autoComplete
[formControlName]="formControlName"
[suggestions]="suggestions"
[multiple]="multiple"
[dropdown]="dropdown"
(completeMethod)="search($event)">
</p-autoComplete>
包装器组件TS:
@Component({
selector: 'logi-autocomplete',
templateUrl: 'autocomplete.component.html',
providers: [AUTOCOMPLETE_VALUE_ACCESSOR]
})
export class AutocompleteComponent implements OnInit, ControlValueAccessor {
@Input() formControlName: string;
@Input() multiple = true;
@Input() dropdown = true;
// Skipped non related code
_value: any = '';
get value(): any { return this._value; };
set value(v: any) {
if (v !== this._value) {
this._value = v;
this.onChange(v);
}
}
writeValue(value: any) {
this._value = value;
this.onChange(value);
}
onChange = (_) => {};
onTouched = () => {};
registerOnChange(fn: (_: any) => void): void { this.onChange = fn; }
registerOnTouched(fn: () => void): void { this.onTouched = fn; }
}
在自定义中使用组件的组件:
<form [formGroup]="form">
<logi-autocomplete
[formControlName]="'groups'"
></logi-autocomplete>
</form>
您必须在要嵌入自动完成的HTML中编写代码。
`
<span class="ui-fluid">
<p-autoComplete formControlName="autoComplete"field="label"completeMethod)="search($event)">
</p-autoComplete>
</span>
<ul>
<li *ngFor="let s of autoComplete">{{s.label}}
</li>
</ul>
`
并在组件中写代码,您将将数据传递给自动完成小部件。
autoComplete = new FormControl(null, []);search(event){this.receiptDiarizationFacade.getSubjects(event.query).subscribe(value=>this.autoComplete=value);
}
在此代码快照中,我使用了可观察的,而不是承诺,但您可以使用Promise