Sending variables from a main page to a nested component

Currently facing an issue with the routing mechanism in Angular 9. Specifically, I am struggling to capture the parameter inside the BuildingDetailComponent even though it is present in the URL displayed in the address bar.

In the Parent component, my routes are defined as follows:

const routes: Routes = [ { path: '', component: BuildingsComponent, data: { title: 'Buildings' } } ];

And for the Building Detail component's routing:

 const routes: Routes = [ { path: '', component: BuildingDetailComponent, data: { title: 'Buildings'},
  children: [ 
    { path: 'building-detail', component: BuildingDetailComponent, data: { title: 'Building Detail' } },
    { path: 'building-detail/:id', component: BuildingDetailComponent, data: { title: 'Building Detail' } }       
  ]
}
];

To pass the value within my BuildingComponent.html:

<td style="text-align: center;"><button [routerLink]="['./building-detail', building.ID]" class="button button-primary"><span >Edit</span></button></td>

When trying to retrieve the parameter in BuildingDetailComponent:

this.buildingID = (this.route.snapshot.paramMap.get('id') != null) ? parseInt(this.route.snapshot.paramMap.get('id')) : 0;

I have explored various options without success, and now seeking advice regarding this specific issue. Any help would be greatly appreciated. Thank you.

Answer №1

The main issue stems from Angular defaulting to the first matched route, which in this case is path: '', causing the absence of :id.

To rectify this, we can enhance child routing by tweaking the routes so that Angular navigates to the path :id within the children route.

const routes: Routes = [ 
  { 
    path: 'building-detail',   
    children: [ 
      { path: '', component: BuildingDetailComponent, data: { title: 'Building Detail' } },
      { path: ':id', component: BuildingDetailComponent, data: { title: 'Building Detail' } }       
    ] 
  }
];

I trust this solution will address your concern effectively.

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