How can I insert an item into a BehaviorSubject?
I want to add an item with an expanded name in each object. Here's what I have tried so far:
How can I insert an item into a BehaviorSubject?
I want to add an item with an expanded name in each object. Here's what I have tried so far:
Is this the kind of thing you're looking for?
this.someService.retrieve()
.watch(responses => {
const editedResponses = responses.map(entry => ({...entry, modified: false}));
this.data.receive(editedResponses)
});
It seems you are looking to include the expanded property in the array of values for BehaviorSubject.
Here is a way to achieve this: BehaviorSubject has a value
property that holds the most recent data emitted.
this.dates.value.forEach(item => (item.expanded = true));
console.log(this.dates.value);
Please remember to modify the data before emitting the next value, as suggested by @Bojan Kogoj, to ensure that all current subscribers receive the updated data.
My typical approach in handling this task involves the following steps:
private update$ = new BehaviorSubject(null);
fetchData$(): Observable<Order[]>{
return this.update$.pipe(switchMap(()=>
this.http.get<Order[]>(`${this._url}/orders`)));
}
If you're looking to include the 'expanded' attribute in every object within an array, consider implementing the following approach:
private dataSubject: BehaviorSubject<any> = new BehaviorSubject<any>(this.data);
public dataObservable$: Observable<any> = this.dataSubject.asObservable();
this.dataSubject.next(response); // Assign your data object and subscribe to the observable
this.dataObservable$.subscribe(dataObs => {
dataObs.forEach(item => {
if (item && !item['expanded']) {
item['expanded'] = false;
}
})
})
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