如何在ngrx/effects中使用/其他? [英] How to do if/else in ngrx/effects?
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问题描述
我正在使用ngrx/effects.我想基于商店中的foo
状态调度不同的操作.
I am using ngrx/effects. I want to dispatch different actions based on a foo
state in the store.
这是我现在正在做的事情:
This is how I am doing now:
@Effect() foo1$ = this.updates$
.whenAction(Actions.FOO)
.filter(obj => !obj.state.product.foo)
.map<string>(toPayload)
.map(x => ({ type: Actions.BAR1, payload: { x }}));
@Effect() foo2$ = this.updates$
.whenAction(Actions.FOO)
.filter(obj => obj.state.product.foo)
.map<string>(toPayload)
.map(x => ({ type: Actions.BAR2, payload: { x }}));
Is there a way to use RxJS 5 operators like partition
, groupBy
, if
, case
in this post? I cannot use it correctly now.
推荐答案
具有2个单独的效果源就可以了.否则就简单点:
Having 2 separate effect sources are fine. Otherwise make it simple:
@Effect() foo$ = this.updates$
.whenAction(Actions.FOO)
.map(({action, state}) => {
if (state.product.foo) {
return { type: Actions.CHAT_GET_MESSAGES2, payload: { action.payload }};
} else {
return { type: Actions.CHAT_GET_MESSAGES, payload: { action.payload }};
}
});
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