1
我已经走遍了如何做我想做的,但无济于事的文档。我有一个动态表单组件,它是父对象的子路径。例如,下面是为用户配置文件和编辑用户配置文件的形式路径:组件之间的通信层次结构之外(Angular2)
{
canActivate: [AuthGuard],
path: 'profile',
component: ProfileComponent,
children: [
{
path: 'edit',
component: FormComponent,
data: {
form_title: 'Edit Profile',
action: 'current_user',
method: 'put'
}
}
]
},
我想在这里使用的方法:https://angular.io/docs/ts/latest/cookbook/component-communication.html#!#bidirectional-service
它不工作,虽然。我认为问题在于我注入了相同服务的不同实例进行通信,因此组件之间没有实际的“连接”。
这里是我的组件和我的服务,我要与通信:
ProfileComponent:
@Component({
moduleId: module.id,
selector: 'profile',
templateUrl: 'templates/profile.component.html',
providers: [ FormControlService ]
})
export class ProfileComponent implements OnDestroy{
private user: User;
private profile_sub: Subscription;
constructor(
private auth: AuthenticationService,
private fcs: FormControlService
){
this.user = auth.getUser();
this.profile_sub = fcs.resourceUpdated$.subscribe(user => {
this.user = user;
console.log(user); //nothing is logged to console here
});
}
ngOnDestroy(){
this.profile_sub.unsubscribe();
}
}
FormComponent(简单化,以显示相关的部分,重要的部分是的onsubmit()函数)
@Component({
moduleId: module.id,
selector: 'nw-form',
templateUrl: 'templates/form.component.html',
styleUrls: [ 'css/form.component.css' ],
providers: [ FormControlService ]
})
export class FormComponent implements OnInit, OnDestroy{
private fields: FormItem<string | Object>[][];
private form_title: string;
private form: FormBaseClass;
private model_sub: Subscription;
private submit_sub: Subscription;
formGroup: FormGroup;
constructor(
private fcs: FormControlService,
//...removed irrelevant code...//
) {
//...sets up form and populates fields if necessary...//
}
ngOnDestroy(): void {
if(this.model_sub) this.model_sub.unsubscribe();
if(this.submit_sub) this.submit_sub.unsubscribe();
}
onSubmit() {
//this is where I am trying to send data back to the profile component
this.fcs.updateResource(this.formGroup.value);
}
}
FormControlService(也简单化了重要的部分)
@Injectable()
export class FormControlService {
private savedSource = new Subject<any>();
resourceUpdated$ = this.savedSource.asObservable();
constructor(
private clientForm: ClientForm,
private profileForm: ProfileForm
) {}
updateResource(resource: any): void {
this.savedSource.next(resource);
}
//...more functions go here...//
}
随着我的路由器设置,有没有更好的方法来做到这一点?我宁愿不必在配置文件组件中使用表单组件作为指令,但如果这是我可能需要调整我的代码以适应的唯一方法。
Angular 2.2.0
是啊!我可以发誓我之前曾试过,但得到“没有提供商的FormControlService”错误,所以我最终分别注入到两者。完全理解为什么它不这样工作。 –