Application Background: My application is built up using ASP.net MVC(.net framework 4.6) and several Angular 4 mini SPAs
One of SPA use this approach to bootstrap components. In short this SPA could bootstrap multiple components managed by one Angular app.
Question I want to add a provider (dynamically if that is correct word) in providers array only when a component is present in html view. Hope you guys could help?
Example I want to add { provide: APP_BASE_HREF, useValue: '/shoppingbasket/my' } in providers array when AddProductToShoppingBasketComponent is loaded/present in view
Code
import { BrowserModule } from '@angular/platform-browser';
import { NgModule, ComponentFactoryResolver, ApplicationRef, Type } from '@angular/core';
import { HTTP_INTERCEPTORS } from "@angular/common/http";
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
//import { APP_BASE_HREF } from "@angular/common";
import { ToastrModule } from "ngx-toastr";
import { NgProgressModule, NgProgressInterceptor } from 'ngx-progressbar';
import { ShoppingModule } from './shopping/shopping.module';
import { SharedModule } from './shared/shared.module';
import { CheckoutModule } from './checkout/checkout.module';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { ShoppingBasketComponent } from "./shopping/shopping-basket.component";
import { AddProductToShoppingBasketComponent } from './shopping/add-product-to-shopping-basket.component';
const components = [AppComponent, AddProductToShoppingBasketComponent, ShoppingBasketComponent];
@NgModule({
declarations: [
AppComponent
],
imports: [
SharedModule,
CheckoutModule,
AppRoutingModule,
BrowserModule,
ShoppingModule,
NgProgressModule,
BrowserAnimationsModule,
ToastrModule.forRoot({
timeOut: 5000,
positionClass: 'toast-bottom-right',
preventDuplicates: true,
closeButton: true
})
],
providers: [
//{ provide: APP_BASE_HREF, useValue: '/shoppingbasket/my' },
{ provide: HTTP_INTERCEPTORS, useClass: NgProgressInterceptor, multi: true }
],
entryComponents: components
})
export class AppModule {
//Reference: https://blog.novatec-gmbh.de/angular-2-in-a-multi-page-application/
constructor(private resolver: ComponentFactoryResolver) { }
ngDoBootstrap(appRef: ApplicationRef) {
components.forEach((componentDef: Type<{}>) => {
const factory = this.resolver.resolveComponentFactory(componentDef);
if (document.querySelector(factory.selector)) {
appRef.bootstrap(factory);
}
});
}
}