SAP Spartacus的基于outlet的页面扩展

需求：在Spartacus product明细页面(Product detail page, 缩写PDP)里增添逻辑：如果一个产品的库存小于300，显示“Limited offer”的提示信息，如下图所示：

下面是具体实现方法：

新建一个Outlet Component：

import { Component, OnInit } from '@angular/core';
import { Product, ProductService } from '@spartacus/core';
import { CurrentProductService } from '@spartacus/storefront';
import { Observable } from 'rxjs';

@Component({
  selector: 'app-outlets',
  templateUrl: './outlets.component.html',
})
export class OutletsComponent implements OnInit {

  hotProduct$: Observable<Product> = this.productService.get('816780');
  currentProduct$: Observable<Product> = this.currentProductService.getProduct();

  constructor(private productService: ProductService, private currentProductService: CurrentProductService) { }

  ngOnInit() {

  }

}

页面模板：

<ng-template cxOutletRef="Section1" cxOutletPos="before">
  <h1>Hot sale</h1>
  <cx-product-list-item
    *ngIf="hotProduct$ | async as product"
    [product]="product"
  ></cx-product-list-item>
</ng-template>

<ng-template cxOutletRef="PDP.PRICE" cxOutletPos="before">
  <h3
    class="text-danger"
    *ngIf="(currentProduct$ | async)?.stock.stockLevel < 300"
  >
    Limited offer!
  </h3>
</ng-template>

在NgModule里，将outlet Component加入到exports区域里：

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { OutletsComponent } from './outlets.component';
import { OutletRefModule, ProductListModule } from '@spartacus/storefront';



@NgModule({
  declarations: [OutletsComponent],
  imports: [
    CommonModule,
    OutletRefModule,
    ProductListModule
  ],
  exports: [OutletsComponent]
})
export class OutletsModule { }