![]() ![]() And that works with 'ng serve' but does not work with IIS 7.5. Ideally, it should load index.html and pass rest of the url to angular router and load that /route1/component1. it loads index.html and then clicking on navigation link on index.html it takes user to But when user tries to go to url directly by typing in browser address bar, it is sending that request to IIS, and that returns and error with resource not found.Īnd it is easy to understand, that url is not exists on server. Once we host the app to IIS 7.5, we can browse to root of the app without much of the problem and we can navigate to whatever other views from app navigation created.īut issue starts when user try to load url which is targeting specific route or component. You should now be able to create very dynamic user interfaces, that can be configured in configuration files that are loaded at runtime and based on this information different modules and components are lazy-loaded with new routes.It is working fine while we are running under angular-cli with 'ng serve'. The following picture demonstrates the lazy loading process of this component:Īngular 9 provides a very clean and elegant solution to manually import modules and components at runtime using the import(.) syntax. If you want to dynamically load a component in Angular 8, please check out Manually Lazy load Components in Angular 8 Set to the URL you want to switch to and it just works. Since Angular 9, we do not need to register and add the DynamicLaz圜omponent inside any module as an entry component. To redirect a user to an external url, we can use the property in angular. We use the same import(.) syntax to lazy-load components the same way we did it for modules.The templateViewContainerRef is used to tell the rendering engine where the lazy-loaded component should be rendered.The optional second argument of the decorator ( ) is used to read the ViewContainerRef instance from the view query.We use the decorator to be able to query the TemplateRef instance of our element.The lazy-loaded module is loaded and its LazyHomeComponent is renderedĭynamically showing the available routes in the toolbar is done by iterating over the available routes from the router config in :.The browser URL changes to the new route /lazy after the loading has been finished.The chunk for the lazy module is requested from the server, a loading indicator is shown in the meantime.We see three things happening after the "Load Lazy Module" button was clicked: Next, we need to reset the router configuration used for navigation and generating links by calling resetConfig with our new configuration that includes the lazy-loaded module route.įinally, we navigate to the new loaded route and see if it works: The wildcard route always needs to be at the last index of your routes array because it matches every URL and should be selected only if no other routes are matched first. We get the current router config from the Router via Dependency Injection and push our new routes into it.īe careful if you have a wildcard route ( **) in your route configuration. In my demo, I have implemented a LazyLoaderService to demonstrate that behaviour: via an HTTP call to a backend) to fetch a configuration file which includes information about the modules and/or components that should be lazy-loaded. Usually, after this event occurred, a resource is accessed asynchronous (e.g. Sometimes you want to have more control over the lazy loading process and trigger the loading process after a certain event occurred (e.g. If you add LazyModule to any imports array of a module, it will be loaded eagerly (immediately). Using Angular 8 (or previous versions) you need to write loadChildren: './lazy/lazy.module#LazyModule to enable lazy loading of a module using the Angular router as it does not support the import(.) syntax.Īngular CLI will then automatically create a separate JavaScript bundle for this module which is only loaded from the server if the selected route gets activated.
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