Looking for a way to execute code whenever the active state changes? I keep track of the value like this:
export class AdminLayoutComponent implements OnInit, AfterViewInit {
activeState: string;
constructor(private router: UIRouter) {
this.activeState = this.router.stateService.$current.name;
}
}
Is there a method to run a code snippet (which assigns a class in the navigation menu for the active state) each time the current state is updated?
When multiple components are responsible for changing a "variable", the most efficient approach is to have the variable managed by a service. This way, in your component, you can:
get variable(){
return myservice.variable
}
set variable(value){
myservice.variable=value
...additional code when the variable changes...
}
//Then, in your component, you can set
variable="HelloWorld";
//Or in your .html file, you can display
{{variable}}
Have you utilized the UI-Router library?
If so, it's likely that you'll need to incorporate the TransitionService hook into your code.
class MainComponent implements OnInit, AfterViewInit {
currentActiveState: string;
constructor(private routingService: UIRouter) {
this.currentActiveState = this.routingService.stateService.$current.name;
}
ngOnInit(): void {
this.routingService.transitionService.onSuccess({}, (transition: Transition) => {
this.currentActiveState = this.routingService.stateService.$current.name;
return true;
}
}
}
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