javascript - mixLatest 与 ngrx 不更新更改

Question

我有以下代码:

this._loadingStateSubscription = combineLatest(
      select(fromTreeSelector.selectLoadingState),
      select(fromFinanceSelector.selectLoadingState),
      (isTreeLoading, isFinanceLoading) => {
        return isTreeLoading && isFinanceLoading;
      }
    )
      .subscribe(isLoading => this.isLoading = !isLoading);

问题是，我的订阅没有根据更改进行更新。但下面我有这段代码

this.store.pipe(select(fromTreeSelector.selectLoadingState))
      .subscribe((isLoading) => {
        // this.isLoading = isLoading;
        console.log("isLoading", isLoading)
      });
    this._loadingStateSubscription = this.store.pipe(select(fromFinanceSelector.selectLoadingState))
      .subscribe((isLoading) => {
        // this.isLoading = isLoading;
        console.log("isLoading", isLoading)
      });

每次更新时我都会收到一条控制台日志消息。

两个选择器如下所示:

export const selectLoadingState = (state: AppState) => state.structures.isLoading;

对此有什么想法吗？

Answer 1

好吧，我想通了:

this.store.select(fromTreeSelector.selectLoadingState),
this.store.select(fromFinanceSelector.selectLoadingState)

我必须添加 this.store 现在它正在工作。