我正在尝试做一些简单的事情 – 在保存一些实体后(使用http请求)
我想导航回列表路线.问题是：如何订阅成功动作(或者可能是减速器或效果？)
我想导航回列表路线.问题是：如何订阅成功动作(或者可能是减速器或效果？)
这是我的行为代码：
static SAVE_POST = '[POST] Save POST';
savePOST(Post): Action {
return {
type: PostActions.SAVE_POST,payload: Post
};
}
static SAVE_POST_SUCCESS = '[POST] Save POST Success';
savePOSTSuccess(Post): Action {
console.log('action: savePostSuccess')
return {
type: PostActions.SAVE_POST_SUCCESS,payload:Post
};
}
我正在使用效果：
@Effect() savePost$= this.update$
.ofType(PostActions.SAVE_POST)
.map(action => action.payload)
.switchMap(post => this.svc.savePost(post))
.map(post => this.postActions.savePOSTSuccess(post));
减速器：
const initialState: PostListState = [];
export default function (state = initialState,action: Action): PostListState {
switch (action.type) {
case PostActions.LOAD_POST_SUCCESS: {
return action.payload;
}
case PostActions.SAVE_POST_SUCCESS: {
console.log('SavePOST SUCCESS',action.payload)
let index = _.findIndex(state,{_id: action.payload._id});
if (index >= 0) {
return [
...state.slice(0,index),action.payload,...state.slice(index + 1)
];
}
return state;
}
default: {
return state;
}
}
}
在我的组件中,我想订阅成功回调：
handlePostUpdated($event) {
this.post = this.code;
let _post: Post = Object.assign({},{ _id: this.id,name: this.name,text: this.post });
this.store.dispatch(this.postActions.savePOST(_post)); //not have "subscribe" method
}
感谢帮助
您也可以订阅组件中的操作：
[...]
import { Actions } from '@ngrx/effects';
[...]
@Component(...)
class SomeComponent implements OnDestroy {
destroyed$= new Subject<boolean>();
constructor(updates$: Actions) {
updates$
.ofType(PostActions.SAVE_POST_SUCCESS)
.takeUntil(this.destroyed$)
.do(() => /* hooray,success,show notification alert ect.. */)
.subscribe();
}
ngOnDestroy() {
this.destroyed$.next(true);
this.destroyed$.complete();
}
}
