Creating routes with dynamic components or importing dynamic components in Angular 2 is a versatile and powerful feature

Question

Creating routes with dynamic components or importing dynamic components in Angular 2 is a versatile and powerful feature

Is there a way to dynamically create routes or import components based on data?

For instance, suppose I have a JSON file with objects containing RouteNames, paths, and ComponentNames. How can I dynamically generate route definitions from this data? The challenge lies in dynamically importing the components as the import rule typically requires a static definition.

I tried:

let a = "MyComponentName"
import {a} from ......

(One idea is to create a map with key-value pairs where the key is the route and the value is the component. Then, match the route names from the JSON with the map and add the corresponding component to the final route configuration array. However, this solution seems cumbersome. Are there any other approaches that could be more elegant?

I'm stuck and would appreciate any assistance. Thank you!

dynamic import routes angular components

Answer 1

Answer №1

To achieve this, you can utilize Async routes. By configuring your routes appropriately, you can load routes from modules and specify the path to retrieve components associated with each route.

Here is an example:

var routes = {
  path: '/path',
  name: 'some name',
  module: './my.component',
  component: 'MyComponentName'
}
routes.forEach((route : any) => {
  this.routeConfigArray.push(
      new AsyncRoute({
          path : route.path,
          loader : () => System.import(route.module).then(m => m[route.component]),
          name : route.name
      });
  );
});

this._router.config(this.routeConfigArray);

Another method involves creating a function to retrieve function names and check for matching potential components based on that.

Here is a snippet of this approach:

ngOnInit() {
  this.routes = [
    {
      path: '/test', component: 'OtherComponent', name: 'Test'
    }
  ];
  this.configureRoutes(this.routes);
  this.router.config( this.routes);
}

configureRoutes(routes) {
  var potentialComponents = [ OtherComponent ];
  routes.forEach((route) => {
    route.component = potentialComponents.find((component) => {
      return component.name === route.component;
    });
  });
}

Check out this plunkr for a demonstration: https://plnkr.co/edit/KKVagp?p=preview.

For more insights, refer to the following question:

Dynamic Route Loading in Angular 2 Fails. (Beta)

Answer 2

To achieve this, you can utilize Async routes. By configuring your routes appropriately, you can load routes from modules and specify the path to retrieve components associated with each route.

Here is an example:

var routes = {
  path: '/path',
  name: 'some name',
  module: './my.component',
  component: 'MyComponentName'
}
routes.forEach((route : any) => {
  this.routeConfigArray.push(
      new AsyncRoute({
          path : route.path,
          loader : () => System.import(route.module).then(m => m[route.component]),
          name : route.name
      });
  );
});

this._router.config(this.routeConfigArray);

Another method involves creating a function to retrieve function names and check for matching potential components based on that.

Here is a snippet of this approach:

ngOnInit() {
  this.routes = [
    {
      path: '/test', component: 'OtherComponent', name: 'Test'
    }
  ];
  this.configureRoutes(this.routes);
  this.router.config( this.routes);
}

configureRoutes(routes) {
  var potentialComponents = [ OtherComponent ];
  routes.forEach((route) => {
    route.component = potentialComponents.find((component) => {
      return component.name === route.component;
    });
  });
}

Check out this plunkr for a demonstration: https://plnkr.co/edit/KKVagp?p=preview.

For more insights, refer to the following question:

Dynamic Route Loading in Angular 2 Fails. (Beta)

Answer 3

Answer №2

Find the Plunker for RC.6 here

update

The latest router (>= RC.3) documentation on using router.resetConfig

router.resetConfig([
 { path: 'team/:id', component: TeamCmp, children: [
   { path: 'simple', component: SimpleCmp },
   { path: 'user/:name', component: UserComp }
 ] }
]);

original

A suggested approach:

import from 'myComponents' as myComponents;

...

someFunc(name:string) {
  console.debug(myComponents[name]);
}

Loading routes can be done like this:

constructor(private router:Router) { }

someFunc() {
  this.router.config([
    { 'path': '/', 'component': IndexComp },
    { 'path': '/user/:id', 'component': UserComp },
  ]);
}

I have not personally tested this.

For more insights, check out this associated query: Angular2 App Routing through Services

Answer 4

Find the Plunker for RC.6 here

update

The latest router (>= RC.3) documentation on using router.resetConfig

router.resetConfig([
 { path: 'team/:id', component: TeamCmp, children: [
   { path: 'simple', component: SimpleCmp },
   { path: 'user/:name', component: UserComp }
 ] }
]);

original

A suggested approach:

import from 'myComponents' as myComponents;

...

someFunc(name:string) {
  console.debug(myComponents[name]);
}

Loading routes can be done like this:

constructor(private router:Router) { }

someFunc() {
  this.router.config([
    { 'path': '/', 'component': IndexComp },
    { 'path': '/user/:id', 'component': UserComp },
  ]);
}

I have not personally tested this.

For more insights, check out this associated query: Angular2 App Routing through Services

Answer 5

Answer №3

When it comes to creating three screens labeled page1, page2, and page3 along with components named app/page1.ts, app/page2.ts, and app/page3.ts, there is a specific process involved.

       let screens : Array<string> = ["Page1","Page2","Page3"];
       let aRouter : RouteDefinition;
       this.routes = new Array<RouteDefinition>();
       screens.map(function(screenId){
           aRouter = new AsyncRoute({
                path: "/" + screenId,
                name: screenId,
                loader: () =>  System.import("app/" + screenId).then(c => c[screenId]) // not  import {page1, page2, page3}}
            });
            this.routes.push(aRouter);
       }.bind(this));  //we need to bind to current "this" instead of global this
        this.router.config(this.routes);

The key concept here is using .bind(this), which is a fundamental aspect of vanilla JavaScript. For the complete solution and example code, refer to the following GitHub repository: https://github.com/Longfld/DynamicalAsyncRouter

Answer 6

When it comes to creating three screens labeled page1, page2, and page3 along with components named app/page1.ts, app/page2.ts, and app/page3.ts, there is a specific process involved.

       let screens : Array<string> = ["Page1","Page2","Page3"];
       let aRouter : RouteDefinition;
       this.routes = new Array<RouteDefinition>();
       screens.map(function(screenId){
           aRouter = new AsyncRoute({
                path: "/" + screenId,
                name: screenId,
                loader: () =>  System.import("app/" + screenId).then(c => c[screenId]) // not  import {page1, page2, page3}}
            });
            this.routes.push(aRouter);
       }.bind(this));  //we need to bind to current "this" instead of global this
        this.router.config(this.routes);

The key concept here is using .bind(this), which is a fundamental aspect of vanilla JavaScript. For the complete solution and example code, refer to the following GitHub repository: https://github.com/Longfld/DynamicalAsyncRouter

Creating routes with dynamic components or importing dynamic components in Angular 2 is a versatile and powerful feature

Answer №1

Answer №2

Answer №3

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