My website features a mat-tab-nav-bar navigation bar, but I'm facing an issue with the mat-tab-link blue underlining bar. It doesn't move to highlight the active button, instead, it stays on the first button. However, the buttons do change into their active state by changing the background color and routing to the correct pages.
Below is the code from app.component.ts:
import { Component } from '@angular/core';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
navLinks = [
{ path: '', label: 'The Problem' },
{ path: 'the-solution', label: 'The Solution' },
{ path: 'the-game', label: 'The Game' },
{ path: 'probability-calculator', label: 'Probability calculator' },
];
}
And here's the content of app.component.html:
<nav mat-tab-nav-bar>
<a mat-tab-link
*ngFor="let link of navLinks"
[routerLink]="link.path"
routerLinkActive #rla="routerLinkActive"
[active]="rla.isActive">
{{link.label}}
</a>
</nav>
<router-outlet></router-outlet>
The following is the code from app.module.ts:
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { MatTabsModule } from '@angular/material/tabs';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { TheProblemComponent } from './the-problem/the-problem.component';
import { TheSolutionComponent } from './the-solution/the-solution.component';
import { ProbabilityCalculatorComponent } from './probability-calculator/probability-calculator.component';
import { TheGameComponent } from './the-game/the-game.component';
@NgModule({
declarations: [
AppComponent,
TheProblemComponent,
TheSolutionComponent,
ProbabilityCalculatorComponent,
TheGameComponent
],
imports: [
AppRoutingModule,
BrowserModule,
BrowserAnimationsModule,
MatTabsModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
Any suggestions on what might be causing this issue? Thanks!
UPDATE
To investigate further the "active" state of links, I made some changes to the app.component.html:
<nav mat-tab-nav-bar>
<a mat-tab-link
*ngFor="let link of navLinks"
[routerLink]="link.path"
routerLinkActive #rla="routerLinkActive"
[active]="rla.isActive">
{{link.label}}
<div style="color: red; margin-left: 10px;">
<span *ngIf="rla.isActive"> Is active!</span>
<span *ngIf="!rla.isActive"> Is not active...</span>
</div>
</a>
</nav>
<router-outlet></router-outlet>
It appears that the first link in the menu always remains active (rla.isActive) even when navigating to other pages. Other links deactivate their active state properly and only activate when navigated. How can I ensure the first link deactivates when clicking other links?
UPDATE 2
Including code snippet from app-routing.module.ts:
import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { TheProblemComponent } from './the-problem/the-problem.component';
import { TheSolutionComponent } from './the-solution/the-solution.component';
import { TheGameComponent } from './the-game/the-game.component';
import { ProbabilityCalculatorComponent } from './probability-calculator/probability-calculator.component';
const routes: Routes = [
{ path: '', component: TheProblemComponent },
{ path: 'the-solution', component: TheSolutionComponent },
{ path: 'the-game', component: TheGameComponent },
{ path: 'probability-calculator', component: ProbabilityCalculatorComponent }
];
@NgModule({
imports: [ RouterModule.forRoot(routes) ],
exports: [ RouterModule ]
})
export class AppRoutingModule { }