return empty ajaxAsObservable

Question

I have this code

 allEditChanges
                    .debounce(250)
                    .distinctUntilChanged()
                    .flatMapLatest(function (text) {return  $.ajaxAsObservable({url:..., data:....} }).subscribe()

I need to make this conditionall so sometimes just omit the request. I tried this way

 allEditChanges
 .debounce(250)
 .distinctUntilChanged(
 .flatMapLatest(function (text) {if(myFlag){
 return  $.ajaxAsObservable({url:..., data:....}))
}else{
return $.ajaxAsObservable({}); } }).subscribe()

but when myFlag is true , calls request to the current page. Question how to omit the request ? How to not call any request on some condition

Answer 1

You can use filter

allEditChanges
   .debounce(250)
   .distinctUntilChanged()
   .filter(() => !myFlag)
   .flatMapLatest(function (text) {return  $.ajaxAsObservable({url:..., data:....} })
   .subscribe()

Or return Rx.Observable.empty()

allEditChanges
   .debounce(250)
   .distinctUntilChanged()
   .filter(() => !myFlag)
   .flatMapLatest(function (text) {
       if(myFlag){
         return Rx.Observable.empty();
       }
       return  $.ajaxAsObservable({url:..., data:....} })
   .subscribe()