Deciders

Decides if this effect should process this action (ofType)
Can map an action to a different action
Content Deciders
Inspect the payload to decide how to process action
Can inspect payloads,  environmental variables, or store values.
Can map an action to a different action based on payload
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@Effect()
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 save = this.actions$.pipe(
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   ofType<SaveUser>(UserActionTypes.SaveUser),
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   map(action => {
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     if (action.payload.user.id > 0) {
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       return new UpdateUser(action.payload);
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     } else {
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       return new InsertUser(action.payload);
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     }
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   })
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 );
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​
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// Effect store based decider
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 @Effect()
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 save = this.actions$.pipe(
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   ofType<LoadUserById>(UserActionTypes.SaveUser),
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   withLatestFrom(this.store.pipe(select(getSelectedUserId))),
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     map(([action, userId]) => {
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       if (userId > 0) {
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         return new UpdateUser(action.payload);
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       } else {         
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         return new InsertUser(action.payload);
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       }
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     }));
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Advanced Actions - Previous

3 Types of Actions

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Splitter Actions

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Content Deciders