How can I determine if a route exists in Angular2?
I have a function that stores the route to navigate to if the user is unauthorized.
Upon logging in, I use:
this.router.navigate([this.authService.redirectUrl]);
However, I only want to navigate IF the redirectUrl points to a valid route. Is there a way to achieve this, such as:
if (this.authService.redirectUrl is a valid route) {
this.router.navigate([this.authService.redirectUrl]);
}
Is there a method to verify this?
To confirm the existence of a route, you can utilize the promise method in the following manner:
this.router.navigate(['redirect'])
.then(result => {
console.log('The route exists and redirection has been successfully completed');
})
.catch(error => {
console.log('The route does not exist, redirection halted without any errors thrown');
});
If the specified route is valid, the redirection will occur as expected. However, if it is not defined, you have the option to handle the situation within the catch block.
To avoid handling non-existent URLs, I have implemented the following routing configuration:
{path: 'dashboard', component: DashboardComponent}
{path: 'demo/:demo', component: DemoComponent},
{path: '**', redirectTo: '/dashboard'}
In this setup, ** is used to redirect any paths that cannot be resolved.
Perhaps a potential solution could be implemented as follows:
redirectUrl: string;
this.redirectUrl = this.authService.redirectUrl ? this.authService.redirectUrl : '/home';
this.router.navigate([this.redirectUrl]);
This code snippet will verify the existence of the redirect URL, and if it is not present, it will navigate to the specified alternate route /home (you have the flexibility to modify 'home' to suit your requirements).
Edit:
In case you simply wish to confirm the presence of this.authService.redirectUrl, you may consider utilizing the following method:
if(this.authService.redirectUrl){
//perform desired actions
}
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