我在页面上有一个标头,用于加载客户帐户的用户。 在我点击了打印头结果中的一项之后,用户会加载到下一个选择框,但在我提交之前,我先从打印头中删除了该选项,将其清除并执行onBlur,另一个选择框仍然显示错误的结果。>
检测到打字头值为空后,在哪里可以删除该框的选项?
这里是HTML,下面是我认为相关的代码。
P.S。您可以想象,我不是Angular的专家
<div class="form-group">
<label class="control-label">{{ "ASSUME_IDENTITY.LABELS.CUSTOMER" | translate }}</label>
<div>
<ng-template #rt let-r="result" let-t="term">
{{ r.fullPath }}
</ng-template>
<input id="typeahead-format" name="nodeFullPath" type="text" mdbActive [ngClass]="{'invalid': validNode, 'valid': validNode}"
class="form-control" #el (focus)="onFocus($event)" (selectItem)="selectItem($event)" (blur)="onBlurMethod(selectedNode)"
[ngbTypeahead]="search" [resultTemplate]="rt" [inputFormatter]="formatter" />
</div>
</div>
<div class="form-group">
<label class="control-label">{{ "ASSUME_IDENTITY.LABELS.USER" | translate }}</label>
<div>
<select class="form-control" [(ngModel)]="selectedUser" name="selectedUser" [disabled]="!(usersLoaded | async)">
<option *ngFor="let user of (usersForNode | async)" [ngValue]="user"> {{user.label | translate}}</option>
</select>
</div>
</div>
<div>
<button type="button" [disabled]="!(usersLoaded | async)" class=" btn btn-primary pull-right" (click)="assumeIdbuttonPressed()">
{{ "ASSUME_IDENTITY.BTN_ASSUME_IDENTITY" | translate }}</button>
</div>
.....................
setSelectedUserToFirstItem(user: HttpOption) {
this.selectedUser = user;
}
onFocus(e: Event): void {
e.stopPropagation();
setTimeout(() => {
const inputEvent: Event = new Event('input');
e.target.dispatchEvent(inputEvent);
}, 0);
}
search = (text: Observable<string>): Observable<CustomerNodePath[]> =>
text
.debounceTime(100)
.distinctUntilChanged()
.map((term: any) => this.fullPathList.filter(v => v.fullPath.toLowerCase().indexOf(term.toLowerCase()) > -1))
formatter = (x: { fullPath: string }): string => x.fullPath;
selectItem = (event: any) => {
this.selectedNode = event.item;
this.store.dispatch(new GetUsersForNode(this.selectedNode.id));
}
onBlurMethod = (node: CustomerNodePath): void => {
if (!this.selectedNode) this.dispatchNodeValidationError();
}
private dispatchNodeValidationError = (): void => {
this.store.dispatch(new NodeValidationError());
}
答案 0 :(得分:0)
这是我们拥有的解决方案:
将其放入组件中。
onBlurMethod = ( event: any, node: CustomerNodePath): void => {
if (event.target.value === "") this.store.dispatch(new ClearUsers())
if (!this.selectedNode) this.dispatchNodeValidationError()
}
您可以看到,在reducer中注册了一个名为ClearUsers的新操作,我们正在调用它。
这是Reducer中的一个新案例,因此也是一个新的Action:
case AssumeIdActionTypes.GetUsersForNodeSuccess:
const usersForNode = mapToHttpOption(action.users);
return {...state,
usersForNode: usersForNode,
usersLoaded: hasUser(usersForNode),
error: ''
};
case AssumeIdActionTypes.ClearUsers:
return {... state,
usersForNode: []
};