thanx man really appreciate the help i got it to work but i dont think i
did it right the angular should detect the change automatically rather than
me explicitly calling the ngonchange fuction
well if you have any ideas about that pla let me know
On Fri, Aug 10, 2018 at 11:57 AM Munim Rehman wrote:
> thanks man for fast reply u were a great help i did what u said but still
> the view is not changing with the change in the variable
> [image: newquery.PNG]
> the highlighted service is called but the code after that is not called i
> have no idea why
>
> On Fri, Aug 10, 2018 at 11:10 AM Sander Elias
> wrote:
>
>> Hi Munim,
>>
>> Use a subject in your service, or use a route parameter.
>>
>> @Inject({ provideIn: 'root' })
>> class CommService {
>> private sub = new Subject();
>> public update$ = this.sub.asObservable();
>>
>> public update(newVal) {
>> this.sub.next(newVal);
>> }
>> }
>>
>> In your child, subscribe to update$, in your parent use the update method.
>>
>> Regards
>> Sander
>>
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