Is it possible to replace the history instead of pushing a new one in Angular 2's new router (rc.1)?
For instance, suppose I am in a question list (/questions), then open a new modal in a new route (/questions/add). After adding a new question, I navigate to the question view (/questions/1). If I press the back button, I would like to go back to /questions instead of /questions/add
To implement this functionality,
router.navigate
Followed by
location.replaceState
Using the same path will allow you to make changes and update the history simultaneously.
For instance, in your scenario:
this.router.navigate(['questions/1']);
this.location.replaceState('questions/1');
If you want to include parameters in the route, generate the URL for the location by following this method:
router.serializeUrl(router.createUrlTree(/* parameters from your router.navigate */));
For the example provided:
this.router.navigate(['questions/1', {name:"test"}]);
this.location.replaceState(this.router.serializeUrl(this.router.createUrlTree(['questions/1', {name:"test"}])));
The angular router now includes a replace URL option. In your case:
this.router.navigate(["questions/1"], {replaceUrl:true});
There is a current problem where multiple navigations in a short time frame may not replace the URL correctly. As a temporary solution, delay the navigate function using a timeout for separate execution cycles:
setTimeout(()=>{
this.router.navigate(["questions/1"], {replaceUrl:true});
});
To implement the replaceState method, refer to the Locations class
https://angular.io/docs/ts/latest/api/common/index/Location-class.html#!#replaceState-anchor
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