The correct procedure for refreshing a page in Angular 8

Question

The correct procedure for refreshing a page in Angular 8

Note: I found some code snippets online but, after testing them out, I have doubts about their reliability due to inconsistencies.

In my script, I have developed two utility functions - one for moving to the parent node and another for reloading the current page. The first function works correctly while the second one fails to trigger the reload operation.

goToParent(route: ActivatedRoute) {
  const options: NavigationExtras = { relativeTo: route };
  this.router.navigate([".."], options);
}

reloadCurrentPage(route: ActivatedRoute) {
  this.router.routeReuseStrategy.shouldReuseRoute = () => false;
  this.router.onSameUrlNavigation = "reload";
  const self = ".";
  this.router.navigate([self]);

  // const options: NavigationExtras = { relativeTo: route };
  // this.router.navigate(["."], options);
}

I followed the solution here, with the only difference being that I want the target path to be dynamic rather than hardcoded. I've experimented with various parameters like self="." and self="" but haven't been able to achieve the desired reload effect.

What am I overlooking?

I also attempted to extract information from the route object passed into the service's method, but all I see are observables instead of actual segments. Additionally, using this.router.navigate(route) resulted in an error.

After searching online, I came across numerous suggestions with conflicting advice (e.g., this), which makes me suspect that the solution could be version-dependent (I'm using 8.0). Moreover, many of the recommendations, while popular, may lead to unintended consequences in the long run without my awareness.

angular typescript router angular8

Answer 1

Answer №1

Great news! I found a solution that works for me without having to refresh the page:

In your router component, make sure to include 'onSameUrlNavigation' in your route.

Here's an example of how to adjust your router.component:

@NgModule({
  imports: [RouterModule.forRoot(routes, { onSameUrlNavigation: 'reload' })],
  exports: [RouterModule],
})

Next, target the specific component you want to reload:

constructor(private router: Router){
  this.router.routeReuseStrategy.shouldReuseRoute = () => {
    return false;
  };
}

someFunction(){
  this.router.navigateByUrl('/route');
}

Answer 2

Great news! I found a solution that works for me without having to refresh the page:

In your router component, make sure to include 'onSameUrlNavigation' in your route.

Here's an example of how to adjust your router.component:

@NgModule({
  imports: [RouterModule.forRoot(routes, { onSameUrlNavigation: 'reload' })],
  exports: [RouterModule],
})

Next, target the specific component you want to reload:

constructor(private router: Router){
  this.router.routeReuseStrategy.shouldReuseRoute = () => {
    return false;
  };
}

someFunction(){
  this.router.navigateByUrl('/route');
}

Answer 3

Answer №2

You can access a complete working example by following this StackBlitz Link

Update Using window.location.reload() goes against the nature of Single-Page Applications. Instead, you can reload a specific component by leveraging Angular's router functionality. To achieve component reloading upon user interaction, simply insert the provided code snippet in your main app.component.ts file once for the entire application.

mySubscription;

 constructor(private router: Router, private activatedRoute: ActivatedRoute){
    this.router.routeReuseStrategy.shouldReuseRoute = () => false;
    this.mySubscription = this.router.events.subscribe((event) => {
      if (event instanceof NavigationEnd) {
         // Reset the Router to treat the last link as fresh
         this.router.navigated = false;
      }
    }); 
 }

In the above code, we are subscribing to router-events and monitoring router-NavigationEnd events to prompt the router to disregard the previous navigation record. This ensures that every time the same component is reloaded, only relevant events are triggered, adhering to the SPA architecture.

In the app.component.ts, remember to unsubscribe from router events in the ngOnDestroy() method when the component is being destroyed.

ngOnDestroy(){
  if (this.mySubscription) {
    this.mySubscription.unsubscribe();
  }
}

For instance, if you have Home and Details components, you can reload each one individually by invoking

this.router.navigate([this.router.url])

which refreshes the current component. For example, in the home component, on a reload-button click event, use

this.router.navigate([this.router.url])

. The same applies to the details component or any other.

Home.component.ts

reLoad(){
  this.router.navigate([this.router.url])
}

Details.component.ts

reLoad(){
  this.router.navigate([this.router.url])
}

By checking the updated StackBlitz link above, you can see a functional example of component reloading with complete router-state refresh. Each component's events will be logged in the browser console when the reload() button is clicked.

Answer 4

You can access a complete working example by following this StackBlitz Link

Update Using window.location.reload() goes against the nature of Single-Page Applications. Instead, you can reload a specific component by leveraging Angular's router functionality. To achieve component reloading upon user interaction, simply insert the provided code snippet in your main app.component.ts file once for the entire application.

mySubscription;

 constructor(private router: Router, private activatedRoute: ActivatedRoute){
    this.router.routeReuseStrategy.shouldReuseRoute = () => false;
    this.mySubscription = this.router.events.subscribe((event) => {
      if (event instanceof NavigationEnd) {
         // Reset the Router to treat the last link as fresh
         this.router.navigated = false;
      }
    }); 
 }

In the above code, we are subscribing to router-events and monitoring router-NavigationEnd events to prompt the router to disregard the previous navigation record. This ensures that every time the same component is reloaded, only relevant events are triggered, adhering to the SPA architecture.

In the app.component.ts, remember to unsubscribe from router events in the ngOnDestroy() method when the component is being destroyed.

ngOnDestroy(){
  if (this.mySubscription) {
    this.mySubscription.unsubscribe();
  }
}

For instance, if you have Home and Details components, you can reload each one individually by invoking

this.router.navigate([this.router.url])

which refreshes the current component. For example, in the home component, on a reload-button click event, use

this.router.navigate([this.router.url])

. The same applies to the details component or any other.

Home.component.ts

reLoad(){
  this.router.navigate([this.router.url])
}

Details.component.ts

reLoad(){
  this.router.navigate([this.router.url])
}

By checking the updated StackBlitz link above, you can see a functional example of component reloading with complete router-state refresh. Each component's events will be logged in the browser console when the reload() button is clicked.

Answer 5

Answer №3

Check your app-routing-module.ts to ensure that you include the {onSameUrlNavigation: 'reload'} option.

@ngModule({
 imports: [RouterModule.forRoot(routes, {onSameUrlNavigation: 'reload'})],
 exports: [RouterModule],
 })

Answer 6

Check your app-routing-module.ts to ensure that you include the {onSameUrlNavigation: 'reload'} option.

@ngModule({
 imports: [RouterModule.forRoot(routes, {onSameUrlNavigation: 'reload'})],
 exports: [RouterModule],
 })

Answer 7

Answer №4

Here is a solution I came up with that seems to be working quite nicely:

I created a ReloadComponent that retrieves the current URL from the navigation state and then navigates only to that URL, resulting in a trip like this: CurrentComponent -> ReloadComponent -> CurrentComponent

import { Component } from '@angular/core';
import { Navigation, Router } from '@angular/router';

@Component({
  selector: 'app-reload',
  templateUrl: './reload.component.html',
})
export class ReloadComponent {
  constructor(private router: Router) {
    const nav: Navigation = this.router.getCurrentNavigation();

    if (nav.extras && nav.extras.state) {
      if (nav.extras.state.returnUrl) {
        this.router.navigateByUrl(nav.extras.state.returnUrl);
      }
    }
  }
}

To use it, I simply call it from the CurrentComponent like this:

const currentUrl = this.router.url;
this.router.navigate(['/reload'], { state: { returnUrl: currentUrl } });

The only change needed in app-routing.ts is to add the ReloadComponent with '/reload' path as usual.

Answer 8

Here is a solution I came up with that seems to be working quite nicely:

I created a ReloadComponent that retrieves the current URL from the navigation state and then navigates only to that URL, resulting in a trip like this: CurrentComponent -> ReloadComponent -> CurrentComponent

import { Component } from '@angular/core';
import { Navigation, Router } from '@angular/router';

@Component({
  selector: 'app-reload',
  templateUrl: './reload.component.html',
})
export class ReloadComponent {
  constructor(private router: Router) {
    const nav: Navigation = this.router.getCurrentNavigation();

    if (nav.extras && nav.extras.state) {
      if (nav.extras.state.returnUrl) {
        this.router.navigateByUrl(nav.extras.state.returnUrl);
      }
    }
  }
}

To use it, I simply call it from the CurrentComponent like this:

const currentUrl = this.router.url;
this.router.navigate(['/reload'], { state: { returnUrl: currentUrl } });

The only change needed in app-routing.ts is to add the ReloadComponent with '/reload' path as usual.

Answer 9

Answer №5

Consider the following steps:

imports: [RouterModule.forRoot(routes, { onSameUrlNavigation: 'reload' })]

Answer 10

Consider the following steps:

imports: [RouterModule.forRoot(routes, { onSameUrlNavigation: 'reload' })]

Answer 11

Answer №6

For those who are still visiting this page, it is important to note that the use of router.routeReuseStrategy in Angular 16 has been marked as deprecated and replaced by an abstract class. It is crucial to remember that this abstract class can only be defined at the root level of the application (this has been confirmed through testing). Personally, I find this solution to be overly complex for my needs since I only need to reload from a single component.

The solution I found to be simple, reliable, and free of any visual issues is as follows:

const currentUrl = this.router.url;
await this.router.navigate(['garbish']); // navigate to another location (anywhere will suffice)
await this.router.navigate([currentUrl]);

One drawback of this approach is that it will add entries to the browser history. If this is a concern, you could create a holding component that receives the currentUrl and automatically forwards if needed.

Answer 12

For those who are still visiting this page, it is important to note that the use of router.routeReuseStrategy in Angular 16 has been marked as deprecated and replaced by an abstract class. It is crucial to remember that this abstract class can only be defined at the root level of the application (this has been confirmed through testing). Personally, I find this solution to be overly complex for my needs since I only need to reload from a single component.

The solution I found to be simple, reliable, and free of any visual issues is as follows:

const currentUrl = this.router.url;
await this.router.navigate(['garbish']); // navigate to another location (anywhere will suffice)
await this.router.navigate([currentUrl]);

One drawback of this approach is that it will add entries to the browser history. If this is a concern, you could create a holding component that receives the currentUrl and automatically forwards if needed.

Answer 13

Answer №7

let routeHandler: any;

ngOnInit(): void {
    this.routeHandler = this._router.routeReuseStrategy.shouldReuseRoute;
    this._router.routeReuseStrategy.shouldReuseRoute = (future: ActivatedRouteSnapshot, curr: ActivatedRouteSnapshot) => {
      return (curr != this.route.snapshot)
    };
}
   
ngOnDestroy(): void {
    this._router.routeReuseStrategy.shouldReuseRoute = this.routeHandler;
}

This code snippet ensures that when navigating back in the browser history on the same route URL, only the content within that route will reload.

Answer 14

let routeHandler: any;

ngOnInit(): void {
    this.routeHandler = this._router.routeReuseStrategy.shouldReuseRoute;
    this._router.routeReuseStrategy.shouldReuseRoute = (future: ActivatedRouteSnapshot, curr: ActivatedRouteSnapshot) => {
      return (curr != this.route.snapshot)
    };
}
   
ngOnDestroy(): void {
    this._router.routeReuseStrategy.shouldReuseRoute = this.routeHandler;
}

This code snippet ensures that when navigating back in the browser history on the same route URL, only the content within that route will reload.

Answer 15

Answer №8

Give this a shot.

this.componentDidMount();

This solution has been successful for me when reloading the page on the same route.

Answer 16

Give this a shot.

this.componentDidMount();

This solution has been successful for me when reloading the page on the same route.

Answer 17

Answer №9

<button type="button" mat-raised-button color="warn" onclick="window.location.reload();">

Reloading the page using window.location.reload() when button is clicked

Answer 18

<button type="button" mat-raised-button color="warn" onclick="window.location.reload();">

Reloading the page using window.location.reload() when button is clicked

Answer 19

Answer №10

For refreshing the current page, follow these steps:

window.location.reload();

Answer 20

For refreshing the current page, follow these steps:

window.location.reload();

The correct procedure for refreshing a page in Angular 8

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

Answer №7

Answer №8

Answer №9

Answer №10

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