[英]pessimistic update using ngrx entity
我有這樣的動作設置
export const bankAccountUpdating = createAction(
'[Create New Account Component] Account Updating',
props<{ update: Update<BankAccount> }>()
);
export const bankAccountUpdated = createAction(
'[Bank Manager Effect] Account Updated',
props<{ update: Update<BankAccount> }>()
);
export const updateAccountError = createAction(
'[Bank Manager Effect] Update Accounts Error'
);
減速器是這樣設置的
export const initialBankAccountsState = adapter.getInitialState({
allBankAccountsLoaded: false,
});
export const bankManagerReducer = createReducer(
initialBankAccountsState,
on(BankManagerActions.bankAccountUpdated, (state, action) =>
adapter.updateOne(action.update, state)
),
請注意,adapter.updateOne 需要來自 ngrx 實體的 Update 類型的 object。
我有一個在更新時觸發的效果設置,一旦返回服務器的響應,我就會嘗試調用“更新”操作
updateAccount$ = createEffect(
() =>
this.actions$.pipe(
ofType(BankManagerActions.bankAccountUpdating),
concatMap((action) =>
this.bankManagerHttpService
.updateAccount(action.update.id, action.update.changes)
.pipe(
catchError((err) => {
console.log(err);
this.store.dispatch(BankManagerActions.updateAccountError());
return of();
})
)
),
map((account) => BankManagerActions.bankAccountUpdated({ account }))) //<--PROBLEM
// ,{ dispatch: false } );
當我試圖調用 BankManagerActions.bankAccountUpdated 時,問題就在這里,它需要更新類型的 object 以便它可以在適配器(在減速器中)調用“updateOne”,但此時我沒有采取行動。 如何使用更新 object 調用 BankManagerActions.bankAccountUpdated?
您應該將map
運算符移動到可觀察到的updateAccount
pipe 中:
updateAccount$ = createEffect(() =>
this.actions$.pipe(
ofType(BankManagerActions.bankAccountUpdating),
concatMap((action) =>
this.bankManagerHttpService
.updateAccount(action.update.id, action.update.changes)
.pipe(
map(account => BankManagerActions.bankAccountUpdated({update: {id: action.update.id, changes: account}})), // action here
catchError((err) => {
console.log(err);
return of(BankManagerActions.updateAccountError());
})
)
),
);
我也刪除了{dispatch: false}
和store.dispatch
。
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