ExpressionChangedAfterItHasBeenCheckedError - ngIf - hiding/showing progressbar
I've got my HTTP interceptor to open loading bar each time HTTP request is made:
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
const dataStorageService = this.injector.get(DataStorageService);
dataStorageService.openProgressbar.next(true);
return next
.handle(req)
.do(evt => {
if (evt instanceof HttpResponse) {
dataStorageService.openProgressbar.next(false);
}
})
.catch(err => {
return Observable.throw(err);
});
}
Then in my data-storage-service I have a subject:
openProgressbar = new Subject<boolean>();
And I listen to it in my app component, where I placed my loading bar:
ngOnInit() {
this.dataStorageService.openProgressbar.subscribe(ifOpen: boolean => {
this.alertMessageNavbarStatus = ifOpen;
});
}
html:
<div id="Intro" *ngIf="alertMessageNavbarStatus">
<app-progress-bar-indeterminate-example>
</app-progress-bar-indeterminate-example>
</div>
But the ExpressionChangedAfterItHasBeenCheckedError is showing. I was looking for solution with using ngAfterContentChecked but it didn't work for me. Could anybody help me?
angular
asked Nov 24 '18 at 12:52
Paweł MellerPaweł Meller
264
add a comment |
I've got my HTTP interceptor to open loading bar each time HTTP request is made:
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
const dataStorageService = this.injector.get(DataStorageService);
dataStorageService.openProgressbar.next(true);
return next
.handle(req)
.do(evt => {
if (evt instanceof HttpResponse) {
dataStorageService.openProgressbar.next(false);
}
})
.catch(err => {
return Observable.throw(err);
});
}
Then in my data-storage-service I have a subject:
openProgressbar = new Subject<boolean>();
And I listen to it in my app component, where I placed my loading bar:
ngOnInit() {
this.dataStorageService.openProgressbar.subscribe(ifOpen: boolean => {
this.alertMessageNavbarStatus = ifOpen;
});
}
html:
<div id="Intro" *ngIf="alertMessageNavbarStatus">
<app-progress-bar-indeterminate-example>
</app-progress-bar-indeterminate-example>
</div>
But the ExpressionChangedAfterItHasBeenCheckedError is showing. I was looking for solution with using ngAfterContentChecked but it didn't work for me. Could anybody help me?
angular
asked Nov 24 '18 at 12:52
Paweł MellerPaweł Meller
264
add a comment |
I've got my HTTP interceptor to open loading bar each time HTTP request is made:
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
const dataStorageService = this.injector.get(DataStorageService);
dataStorageService.openProgressbar.next(true);
return next
.handle(req)
.do(evt => {
if (evt instanceof HttpResponse) {
dataStorageService.openProgressbar.next(false);
}
})
.catch(err => {
return Observable.throw(err);
});
}
Then in my data-storage-service I have a subject:
openProgressbar = new Subject<boolean>();
And I listen to it in my app component, where I placed my loading bar:
ngOnInit() {
this.dataStorageService.openProgressbar.subscribe(ifOpen: boolean => {
this.alertMessageNavbarStatus = ifOpen;
});
}
html:
<div id="Intro" *ngIf="alertMessageNavbarStatus">
<app-progress-bar-indeterminate-example>
</app-progress-bar-indeterminate-example>
</div>
But the ExpressionChangedAfterItHasBeenCheckedError is showing. I was looking for solution with using ngAfterContentChecked but it didn't work for me. Could anybody help me?
angular
asked Nov 24 '18 at 12:52
Paweł MellerPaweł Meller
264
I've got my HTTP interceptor to open loading bar each time HTTP request is made:
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
const dataStorageService = this.injector.get(DataStorageService);
dataStorageService.openProgressbar.next(true);
return next
.handle(req)
.do(evt => {
if (evt instanceof HttpResponse) {
dataStorageService.openProgressbar.next(false);
}
})
.catch(err => {
return Observable.throw(err);
});
}
Then in my data-storage-service I have a subject:
openProgressbar = new Subject<boolean>();
And I listen to it in my app component, where I placed my loading bar:
ngOnInit() {
this.dataStorageService.openProgressbar.subscribe(ifOpen: boolean => {
this.alertMessageNavbarStatus = ifOpen;
});
}
html:
<div id="Intro" *ngIf="alertMessageNavbarStatus">
<app-progress-bar-indeterminate-example>
</app-progress-bar-indeterminate-example>
</div>
But the ExpressionChangedAfterItHasBeenCheckedError is showing. I was looking for solution with using ngAfterContentChecked but it didn't work for me. Could anybody help me?
angular
angular
asked Nov 24 '18 at 12:52
Paweł MellerPaweł Meller
264
asked Nov 24 '18 at 12:52
Paweł MellerPaweł Meller
264
asked Nov 24 '18 at 12:52
Paweł MellerPaweł Meller
264
asked Nov 24 '18 at 12:52
Paweł MellerPaweł Meller
264
asked Nov 24 '18 at 12:52
Paweł MellerPaweł Meller
264
264
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
IMO Put your conditional logic into setTimeout trick for you, like this -
setTimeout(() => {
this.dataStorageService.openProgressbar.subscribe(ifOpen: boolean => {
this.alertMessageNavbarStatus = ifOpen;
});
},0);
For more details I would strongly suggest you to read out this article -
- https://blog.angularindepth.com/everything-you-need-to-know-about-the-expressionchangedafterithasbeencheckederror-error-e3fd9ce7dbb4
answered Nov 24 '18 at 13:06
Pardeep JainPardeep Jain
40.1k16103142
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
IMO Put your conditional logic into setTimeout trick for you, like this -
setTimeout(() => {
this.dataStorageService.openProgressbar.subscribe(ifOpen: boolean => {
this.alertMessageNavbarStatus = ifOpen;
});
},0);
For more details I would strongly suggest you to read out this article -
- https://blog.angularindepth.com/everything-you-need-to-know-about-the-expressionchangedafterithasbeencheckederror-error-e3fd9ce7dbb4
answered Nov 24 '18 at 13:06
Pardeep JainPardeep Jain
40.1k16103142
add a comment |
IMO Put your conditional logic into setTimeout trick for you, like this -
setTimeout(() => {
this.dataStorageService.openProgressbar.subscribe(ifOpen: boolean => {
this.alertMessageNavbarStatus = ifOpen;
});
},0);
For more details I would strongly suggest you to read out this article -
- https://blog.angularindepth.com/everything-you-need-to-know-about-the-expressionchangedafterithasbeencheckederror-error-e3fd9ce7dbb4
answered Nov 24 '18 at 13:06
Pardeep JainPardeep Jain
40.1k16103142
add a comment |
IMO Put your conditional logic into setTimeout trick for you, like this -
setTimeout(() => {
this.dataStorageService.openProgressbar.subscribe(ifOpen: boolean => {
this.alertMessageNavbarStatus = ifOpen;
});
},0);
For more details I would strongly suggest you to read out this article -
- https://blog.angularindepth.com/everything-you-need-to-know-about-the-expressionchangedafterithasbeencheckederror-error-e3fd9ce7dbb4
answered Nov 24 '18 at 13:06
Pardeep JainPardeep Jain
40.1k16103142
IMO Put your conditional logic into setTimeout trick for you, like this -
setTimeout(() => {
this.dataStorageService.openProgressbar.subscribe(ifOpen: boolean => {
this.alertMessageNavbarStatus = ifOpen;
});
},0);
For more details I would strongly suggest you to read out this article -
- https://blog.angularindepth.com/everything-you-need-to-know-about-the-expressionchangedafterithasbeencheckederror-error-e3fd9ce7dbb4
answered Nov 24 '18 at 13:06
Pardeep JainPardeep Jain
40.1k16103142
answered Nov 24 '18 at 13:06
Pardeep JainPardeep Jain
40.1k16103142
answered Nov 24 '18 at 13:06
Pardeep JainPardeep Jain
40.1k16103142
answered Nov 24 '18 at 13:06
Pardeep JainPardeep Jain
40.1k16103142
40.1k16103142
add a comment |
add a comment |
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