我使用ngx-bootstrap
在我的Angular4应用中打开一个模态:http://valor-software.com/ngx-bootstrap/#/modals#service-component
问题是模型没有反映模态的观点。对象已更新,但未在视图上反映出来。以下是重点:
showFromComponent(modalComponent: any, model?: any): void {
let modal = this.modalService.show(modalComponent);
if (model) {
let component = <BaseModalComponent>modal.content;
component.model = model;
component.afterModelLoad();
}
}
BaseModalComponent
:
import { BsModalRef } from 'ngx-bootstrap/modal/modal-options.class';
export abstract class BaseModalComponent {
model: any = {};
protected constructor(
public bsModalRef: BsModalRef
) { }
public abstract afterModelLoad(): void;
}
ModalComponent
:
import { Component, OnInit } from '@angular/core';
import { BsModalRef } from 'ngx-bootstrap/modal/modal-options.class';
import { BaseModalComponent } from '../../../app.core/abstractions/base-modal.component';
@Component({
selector: 'visit-detail-modal',
templateUrl: './visit-detail-modal.component.html',
styleUrls: ['./visit-detail-modal.component.css']
})
export class VisitDetailModalComponent extends BaseModalComponent implements OnInit {
description: string = '';
constructor(
public bsModalRef: BsModalRef
) {
super(bsModalRef);
}
ngOnInit(): void {
}
afterModelLoad(): void {
this.description = this.model.title;
}
}
最后是观点:
<div class="modal-body">
{{description}}
</div>
描述始终为空白。如果我在afterModelLoad
中添加了调试器,则description
已设置,但它不会更新视图。
有什么想法吗?
答案 0 :(得分:1)
在你的组件中注入私有cd:ChangeDetectorRef并在afterModelLoad方法结束时运行detectChanges:
afterModelLoad(): void {
this.description = this.model.title;
this.cd.detectChanges();
}
但是show方法BsModalService提供了一种传递数据来初始化组件的方法会更好。 这里报告了一些相同的问题/功能请求:https://github.com/valor-software/ngx-bootstrap/issues/2251。 关于类似的事情的讨论也发生在ng-bootstrap: https://github.com/ng-bootstrap/ng-bootstrap/issues/861