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Passing Route Data as Component Input in Angular

 In Angular, you can pass route data to a component using the Angular Router. Route data can be useful when you want to pass additional information to a component based on the route it's associated with.

 

In this post, we will learn about- Passing Route Data as Component Input, one of the features of Angular. 

 Here's how you can achieve this:


 Assuming you have a route defined in your app-routing.module.ts file:

// app-routing.module.ts

import { NgModule } from '@angular/core';

import { RouterModule, Routes } from '@angular/router';

import { MyComponent } from './my-component.component';

 

const routes: Routes = [

  {

    path: 'example',

    component: MyComponent,

    data: { id: '1', name: 'anil singh' } // Route data

  },

  // Other routes...

];

 

@NgModule({

  imports: [RouterModule.forRoot(routes)],

  exports: [RouterModule]

})

export class AppRoutingModule {}

 

In the example above, the data property is used to attach additional information to the route. In this case, it includes two properties: id with the value '1' and name with the value 'anil singh'.

 Now, in your MyComponent component, you can access this route data:

// my-component.component.ts

import { Component, OnInit } from '@angular/core';

import { ActivatedRoute } from '@angular/router';

 

@Component({

  selector: 'app-my-component',

  template: `

    <div>

      <h2>My Component</h2>

      <p>ID: {{ routeData.id }}</p>

      <p>Name: {{ routeData.name }}</p>

    </div>

  `

})

export class MyComponent implements OnInit {

  routeData: any; // Define a property to hold the route data

 

  constructor(private route: ActivatedRoute) {}

 

  ngOnInit(): void {

    // Access the route data

    this.route.data.subscribe(data => {

      this.routeData = data;

    });

  }

}

In the MyComponent component, you can inject the ActivatedRoute service to access the route data. The ngOnInit lifecycle hook is a good place to do this. By subscribing to the data observable, you can get the route data and use it in your component.

Now, when you navigate to the 'example' route, the MyComponent will display the values of Id and Name from the route data.

Result,

My Component

1.      Id: 1

2.      Name: anil singh

 

 

On the My Component,  you can read the route parameter using the ActivatedRoute service,

  private route = inject(ActivatedRoute);

 

  ngOnInit(): void {

    this.route.params.subscribe(data =>{

      console.log(data['id']);

    })

  }

 

 On the My Component,  you can read the query parameter using the ActivatedRoute service,

  private route = inject (ActivatedRoute); 

  ngOnInit(): void {

 

    this.route.queryParams.subscribe(data=>{

      console.log(data['name']);

    })

  }

 

On navigating to http://localhost:4200/id/1?name=anil singh  you can see the route parameter and query parameter

By Anil Singh | Rating of this article (*****)

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