Using observable in template freezes browser
1
Using auth.appUser$ in component.html causes the browser to freeze. However, subscribing to auth.appUser$ in component.ts correctly outputs the information to the console.
Note that appUser$ has type: Observable<AppUser>, where AppUser was defined in an interface with the fields name, email, and isAdmin.
The console does not output any exceptions.
navbar.component.html: (the browser freezes here!)
<li *ngIf="auth.appUser$ | async as user; else anonymousUser" ngbDropdown class="nav-item dropdown">
<a ngbDropdownToggle class="nav-link dropdown-toggle" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
{{ user.name }}
</a>
</li>
navbar.component.ts: (the browser does not freeze!)
export class NavbarComponent implements OnInit {
constructor(public auth: AuthService) {
this.auth.appUser$.subscribe(user => console.log(user.name));
}
}
auth.appUser$ is an observable defined in auth.service.ts:
export class AuthService {
user$: Observable<firebase.User>;
constructor(
private userService: UserService) {
this.user$ = this.afAuth.authState;
}
get appUser$(): Observable<AppUser> {
return this.user$
.pipe(
switchMap(user => this.userService.get(user.uid).valueChanges())
);
}
}
angular typescript firebase
asked Nov 19 '18 at 7:40
SimonSimon
61
add a comment |
1
Using auth.appUser$ in component.html causes the browser to freeze. However, subscribing to auth.appUser$ in component.ts correctly outputs the information to the console.
Note that appUser$ has type: Observable<AppUser>, where AppUser was defined in an interface with the fields name, email, and isAdmin.
The console does not output any exceptions.
navbar.component.html: (the browser freezes here!)
<li *ngIf="auth.appUser$ | async as user; else anonymousUser" ngbDropdown class="nav-item dropdown">
<a ngbDropdownToggle class="nav-link dropdown-toggle" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
{{ user.name }}
</a>
</li>
navbar.component.ts: (the browser does not freeze!)
export class NavbarComponent implements OnInit {
constructor(public auth: AuthService) {
this.auth.appUser$.subscribe(user => console.log(user.name));
}
}
auth.appUser$ is an observable defined in auth.service.ts:
export class AuthService {
user$: Observable<firebase.User>;
constructor(
private userService: UserService) {
this.user$ = this.afAuth.authState;
}
get appUser$(): Observable<AppUser> {
return this.user$
.pipe(
switchMap(user => this.userService.get(user.uid).valueChanges())
);
}
}
angular typescript firebase
asked Nov 19 '18 at 7:40
SimonSimon
61
Feel free to provide a Minimal, Complete, and Verifiable example of the issue.
– trichetriche
Nov 19 '18 at 8:58
stackblitz.com !
– trichetriche
Nov 19 '18 at 10:07
add a comment |
1
1
1
Using auth.appUser$ in component.html causes the browser to freeze. However, subscribing to auth.appUser$ in component.ts correctly outputs the information to the console.
Note that appUser$ has type: Observable<AppUser>, where AppUser was defined in an interface with the fields name, email, and isAdmin.
The console does not output any exceptions.
navbar.component.html: (the browser freezes here!)
<li *ngIf="auth.appUser$ | async as user; else anonymousUser" ngbDropdown class="nav-item dropdown">
<a ngbDropdownToggle class="nav-link dropdown-toggle" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
{{ user.name }}
</a>
</li>
navbar.component.ts: (the browser does not freeze!)
export class NavbarComponent implements OnInit {
constructor(public auth: AuthService) {
this.auth.appUser$.subscribe(user => console.log(user.name));
}
}
auth.appUser$ is an observable defined in auth.service.ts:
export class AuthService {
user$: Observable<firebase.User>;
constructor(
private userService: UserService) {
this.user$ = this.afAuth.authState;
}
get appUser$(): Observable<AppUser> {
return this.user$
.pipe(
switchMap(user => this.userService.get(user.uid).valueChanges())
);
}
}
angular typescript firebase
asked Nov 19 '18 at 7:40
SimonSimon
61
Using auth.appUser$ in component.html causes the browser to freeze. However, subscribing to auth.appUser$ in component.ts correctly outputs the information to the console.
Note that appUser$ has type: Observable<AppUser>, where AppUser was defined in an interface with the fields name, email, and isAdmin.
The console does not output any exceptions.
navbar.component.html: (the browser freezes here!)
<li *ngIf="auth.appUser$ | async as user; else anonymousUser" ngbDropdown class="nav-item dropdown">
<a ngbDropdownToggle class="nav-link dropdown-toggle" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
{{ user.name }}
</a>
</li>
navbar.component.ts: (the browser does not freeze!)
export class NavbarComponent implements OnInit {
constructor(public auth: AuthService) {
this.auth.appUser$.subscribe(user => console.log(user.name));
}
}
auth.appUser$ is an observable defined in auth.service.ts:
export class AuthService {
user$: Observable<firebase.User>;
constructor(
private userService: UserService) {
this.user$ = this.afAuth.authState;
}
get appUser$(): Observable<AppUser> {
return this.user$
.pipe(
switchMap(user => this.userService.get(user.uid).valueChanges())
);
}
}
angular typescript firebase
angular typescript firebase
asked Nov 19 '18 at 7:40
SimonSimon
61
asked Nov 19 '18 at 7:40
SimonSimon
61
asked Nov 19 '18 at 7:40
SimonSimon
61
asked Nov 19 '18 at 7:40
SimonSimon
61
asked Nov 19 '18 at 7:40
SimonSimon
61
61
Feel free to provide a Minimal, Complete, and Verifiable example of the issue.
– trichetriche
Nov 19 '18 at 8:58
stackblitz.com !
– trichetriche
Nov 19 '18 at 10:07
add a comment |
Feel free to provide a Minimal, Complete, and Verifiable example of the issue.
– trichetriche
Nov 19 '18 at 8:58
stackblitz.com !
– trichetriche
Nov 19 '18 at 10:07
Feel free to provide a Minimal, Complete, and Verifiable example of the issue.
– trichetriche
Nov 19 '18 at 8:58
Feel free to provide a Minimal, Complete, and Verifiable example of the issue.
– trichetriche
Nov 19 '18 at 8:58
stackblitz.com !
– trichetriche
Nov 19 '18 at 10:07
stackblitz.com !
– trichetriche
Nov 19 '18 at 10:07
add a comment |
1 Answer
1
active
oldest
votes
1
Please try to warp the async in braces
*ngIf="(auth.appUser$ | async) as user; else anonymousUser"
Alternative
<ng-container *ngIf="(auth.appUser$ | async) as user; else anonymousUser">
<li> content... </li>
</ng-container>
answered Nov 19 '18 at 7:51
Sheik AlthafSheik Althaf
27717
Please try withng-containerwithout any bootstrap directives like this<ng-container *ngIf="(auth.appUser$ | async) as user; else anonymousUser">Yourli` tag goes here</ng-container>`
– Sheik Althaf
Nov 19 '18 at 9:14
Will you please updatenavbar.component.htmlfull data?
– Sheik Althaf
Nov 19 '18 at 9:45
i mean full template data. Make sure no other angular directives affected this (like ngFor)
– Sheik Althaf
Nov 19 '18 at 10:17
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
1
Please try to warp the async in braces
*ngIf="(auth.appUser$ | async) as user; else anonymousUser"
Alternative
<ng-container *ngIf="(auth.appUser$ | async) as user; else anonymousUser">
<li> content... </li>
</ng-container>
answered Nov 19 '18 at 7:51
Sheik AlthafSheik Althaf
27717
Please try withng-containerwithout any bootstrap directives like this<ng-container *ngIf="(auth.appUser$ | async) as user; else anonymousUser">Yourli` tag goes here</ng-container>`
– Sheik Althaf
Nov 19 '18 at 9:14
Will you please updatenavbar.component.htmlfull data?
– Sheik Althaf
Nov 19 '18 at 9:45
i mean full template data. Make sure no other angular directives affected this (like ngFor)
– Sheik Althaf
Nov 19 '18 at 10:17
add a comment |
1
Please try to warp the async in braces
*ngIf="(auth.appUser$ | async) as user; else anonymousUser"
Alternative
<ng-container *ngIf="(auth.appUser$ | async) as user; else anonymousUser">
<li> content... </li>
</ng-container>
answered Nov 19 '18 at 7:51
Sheik AlthafSheik Althaf
27717
Please try withng-containerwithout any bootstrap directives like this<ng-container *ngIf="(auth.appUser$ | async) as user; else anonymousUser">Yourli` tag goes here</ng-container>`
– Sheik Althaf
Nov 19 '18 at 9:14
Will you please updatenavbar.component.htmlfull data?
– Sheik Althaf
Nov 19 '18 at 9:45
i mean full template data. Make sure no other angular directives affected this (like ngFor)
– Sheik Althaf
Nov 19 '18 at 10:17
add a comment |
1
1
1
Please try to warp the async in braces
*ngIf="(auth.appUser$ | async) as user; else anonymousUser"
Alternative
<ng-container *ngIf="(auth.appUser$ | async) as user; else anonymousUser">
<li> content... </li>
</ng-container>
answered Nov 19 '18 at 7:51
Sheik AlthafSheik Althaf
27717
Please try to warp the async in braces
*ngIf="(auth.appUser$ | async) as user; else anonymousUser"
Alternative
<ng-container *ngIf="(auth.appUser$ | async) as user; else anonymousUser">
<li> content... </li>
</ng-container>
answered Nov 19 '18 at 7:51
Sheik AlthafSheik Althaf
27717
edited Nov 19 '18 at 9:16
answered Nov 19 '18 at 7:51
Sheik AlthafSheik Althaf
27717
answered Nov 19 '18 at 7:51
Sheik AlthafSheik Althaf
27717
answered Nov 19 '18 at 7:51
Sheik AlthafSheik Althaf
27717
27717
Please try withng-containerwithout any bootstrap directives like this<ng-container *ngIf="(auth.appUser$ | async) as user; else anonymousUser">Yourli` tag goes here</ng-container>`
– Sheik Althaf
Nov 19 '18 at 9:14
Will you please updatenavbar.component.htmlfull data?
– Sheik Althaf
Nov 19 '18 at 9:45
i mean full template data. Make sure no other angular directives affected this (like ngFor)
– Sheik Althaf
Nov 19 '18 at 10:17
add a comment |
Please try withng-containerwithout any bootstrap directives like this<ng-container *ngIf="(auth.appUser$ | async) as user; else anonymousUser">Yourli` tag goes here</ng-container>`
– Sheik Althaf
Nov 19 '18 at 9:14
Will you please updatenavbar.component.htmlfull data?
– Sheik Althaf
Nov 19 '18 at 9:45
i mean full template data. Make sure no other angular directives affected this (like ngFor)
– Sheik Althaf
Nov 19 '18 at 10:17
Please try with
ng-container without any bootstrap directives like this <ng-container *ngIf="(auth.appUser$ | async) as user; else anonymousUser">Your li` tag goes here</ng-container>`– Sheik Althaf
Nov 19 '18 at 9:14
Please try with
ng-container without any bootstrap directives like this <ng-container *ngIf="(auth.appUser$ | async) as user; else anonymousUser">Your li` tag goes here</ng-container>`– Sheik Althaf
Nov 19 '18 at 9:14
Will you please update
navbar.component.html full data?– Sheik Althaf
Nov 19 '18 at 9:45
Will you please update
navbar.component.html full data?– Sheik Althaf
Nov 19 '18 at 9:45
i mean full template data. Make sure no other angular directives affected this (like ngFor)
– Sheik Althaf
Nov 19 '18 at 10:17
i mean full template data. Make sure no other angular directives affected this (like ngFor)
– Sheik Althaf
Nov 19 '18 at 10:17
add a comment |
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Feel free to provide a Minimal, Complete, and Verifiable example of the issue.
– trichetriche
Nov 19 '18 at 8:58
stackblitz.com !
– trichetriche
Nov 19 '18 at 10:07