多个动作的效果 angular

Question

我正在尝试创建一个从商店 (this.libraryReferencesStoreFacade.selectSelectedRows$) 循环收集信息的效果，最后多次调用另一个操作 (LibraryReferencesActions.patch({pathParameters: { id: 120},request: { id: row.id, group: 26 }})。

我尝试了以下代码但没有成功，请帮助我？

@Effect()
    someEffect$: Observable<Action> = this.actions$.pipe(
        ofType(LibraryReferencesActions.createGroupSuccess),
        withLatestFrom(this.libraryReferencesStoreFacade.selectSelectedRows$),
        switchMap(([, rows]) => {
            console.log(rows,"")
            let Observables: Array<Observable<any>> = [];
            rows.forEach((row) => {
                Observables.push(
                    LibraryReferencesActions.patch({
                        pathParameters: { id: 120 },
                        request: { id: row.id, group: 26 },
                    })
                );
            });
                const observables: Array<Observable<any>> = Observables;
                return forkJoin(observables).map(result => new 
                LibraryReferencesActions.refreshList())
            }
        })
    )

也尝试过：

addGroupToLib$ = createEffect(() => {
    return this.actions$.pipe(
        ofType(LibraryReferencesActions.createGroupSuccess),
        withLatestFrom(this.libraryReferencesStoreFacade.selectSelectedRows$),
        map(([, rows]) => {
            let Observables: any = [];
            rows.forEach((row) => {
                Observables.push(
                    LibraryReferencesActions.patch({
                        pathParameters: { id: 120 },
                        request: { id: 120, group: 26 },
                    })
                );
            });
            forkJoin(Observables).pipe(
                map(() => {
                    return LibraryReferencesActions.refreshList();
                })
            );
        })
    );
});

Answer 1

我认为您可以将 refreshList 操作添加到 patch 操作数组的末尾，它们应该运行按顺序排列：

addGroupToLib$ = createEffect(() => {
  return this.actions$.pipe(
    ofType(LibraryReferencesActions.createGroupSuccess),
    withLatestFrom(this.libraryReferencesStoreFacade.selectSelectedRows$),
    switchMap(([, rows]) => {
      return rows
        .map(row => {
          return LibraryReferencesActions.patch({
            pathParameters: { id: 120 },
            request: { id: row.id, group: 26 }
          })
        })
        .concat(
          LibraryReferencesActions.refreshList()
        )
    })
  );
});

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