情境:
Tech:使用typescript和webpack的Angular版本5 app。
我已经做了一个 canDeactivate guard 来查看用户是否想要离开当前路线。
当用户尝试导航到另一条路线时,需要显示我已显示的自定义模式。
然后用户在模态中单击是(例如,我想离开)。
问题:
我的警卫服务受到了很好的打击,但模式方法“canDeactivate”没有被击中。因此模态不会打开。
我已将自定义模态组件添加到html。
我已将警卫和模态添加到app模块中。
这些是我的文件
DeactivateGuardService:
import { ActivatedRouteSnapshot, CanDeactivate, RouterStateSnapshot } from '@angular/router';
import { Injectable } from '@angular/core';
import { DeactivateModalComponent } from '../shared/modals/deactivate-modal/deactivate-modal.component';
@Injectable()
export class DeactivateGuardService implements CanDeactivate<DeactivateModalComponent> {
canDeactivate(component: DeactivateModalComponent) {
console.log('DeactivateGuardService');
// Note: I need this canDeactivate to call it inside my modal.
let canUse = component.canDeactivate();
return canUse;
}
}
我的自定义模式:
import { Component, EventEmitter, Output, Input, HostListener } from '@angular/core';
@Component({
selector: 'deactivate-modal',
templateUrl: 'deactivate-modal.component.html',
styleUrls: [
'../../../managed-app/managed-app.component.scss',
'../../../managed-app/shared/app-flow-styles.scss',
'deactivate-modal.component.scss',
]
})
export class DeactivateModalComponent {
public isModalVisible: boolean = false;
public isRouteActive: boolean = false;
constructor() {}
// Note: this is not getting hit - when I need it too.
canDeactivate() {
this.isModalVisible = true;
return this.isRouteActive;
}
public toggleModal(isVisible: boolean): void {
this.isModalVisible = isVisible;
}
public redirectUser(): void {
this.isRouteActive = true;
}
使用canDeactivate设置路线:
{
path: 'createJob',
component: testComponent,
canDeactivate: [ DeactivateGuardService ],
},