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
@Effect()
 save = this.actions$.pipe(
   ofType<SaveUser>(UserActionTypes.SaveUser),
   map(action => {
     if (action.payload.user.id > 0) {
       return new UpdateUser(action.payload);
     } else {
       return new InsertUser(action.payload);
     }
   })
 );
​
// Effect store based decider
 @Effect()
 save = this.actions$.pipe(
   ofType<LoadUserById>(UserActionTypes.SaveUser),
   withLatestFrom(this.store.pipe(select(getSelectedUserId))),
     map(([action, userId]) => {
       if (userId > 0) {
         return new UpdateUser(action.payload);
       } else {         
         return new InsertUser(action.payload);
       }
     }));

Advanced Actions - Previous

3 Types of Actions

Next - Advanced Actions

Splitter Actions

Last updated 12 months ago