Question

您好我正在尝试在角度创建电子商务页面，其中显示的产品带有复选框选项以过滤产品。但是，由于显示所有数据，我无法使复选框过滤器正常工作。请帮忙。

这是我的stackblitz链接 - https://stackblitz.com/edit/angular-checkbox-list

<div class="brand-select">
<div class="brand-name">Select Color</div>
<form>
    <div class="form-check brand-checkbox" *ngFor="let col of colors;let index = index">
        <input class="form-check-input" 
             type="checkbox" 
             value="{{col.id}}" 
             id="{{col.id}}" 
             name="checkbox" 
             [(ngModel)]="col.selected"
             (ngModelChange)="filterProducts()">

          <label class="form-check-label" for="{{col.id}}">
            {{col.productColor}}
          </label>
        </div>
    </form>
</div>

<div *ngFor="let prod of productListShow">
    <div *ngFor="let product of prod.product">
        <h5 class="product-inner-title">{{product.productName}}</h5>
    </div>
</div>

在我的组件.ts文件 -

中

public colors: any[] = [
{
  id: 1,
  productColor: "Black",
  selected: false,
},
{
  id: 2,
  productColor: "Green",
  selected: false,
}
]
constructor(private productservice: ProductService) { }

ngOnInit() {
 this.productList = this.productservice.getProducts();
 this.productListShow = this.productList; 
}

  public filterProducts(): void {
  const filteredProductArray = new Array<any>();
  const activeColors = this.colors.filter(c => c.selected).map(c => c.productColor);
  this.productList.forEach(prod => {
      const filteredSubProducts = prod.product.filter(p => activeColors.includes(p.productColor));
       if(filteredSubProducts.length > 0){
           const clonedProduct = Object.assign({}, prod);
           clonedProduct.product = filteredSubProducts;
           filteredProductArray.push(clonedProduct);
       }
  });
  this.productListShow = filteredProductArray;
  console.log(this.productListShow);
}

我从服务ProductService获取我的产品数据这里是产品的数据 -

import { Products } from './products';
export const PRODUCTS: Products[] = [
    {
        id: 1,
        productCat:'Jeans',
        product: [
            {
                productId: '1',
                productName: 'Trendy Jeans',
                productColor: 'Green',
            },
            {
                productId: '2',
                productName: 'Black tapered Jeans',
                productColor: 'Black',
            },
        ],
    },
    {
        id: 2,
        productCat:'Shirts',
        product: [
            {
                productId: '1',
                productName: 'Trendy Shirts',
                productColor: 'Green',
            },
            {
                productId: '2',
                productName: 'Black Shirts',
                productColor: 'Black',
            },
        ],
    },
]

因此，当我检查绿色时，它会过滤所有绿色数据，即显示来自productCat牛仔裤和衬衫的绿色产品。如果我只展示牛仔裤数据，我只想展示牛仔裤的绿色产品。请帮忙。

这里再次是stackblitz链接 - https://stackblitz.com/edit/angular-checkbox-list

Answer 1

对于每种产品类型，您应始终有两个HTML分隔的模板，我已在下面的示例中为Jeans类型实现了它。

 filteredJeans: Products[];
 filteredShirts: Products[];

并在模板中

<div class="col-md-10 shop-products">
            <div class="row shop-products-listing">
                <div class="col-md-4" *ngFor="let product of filteredJeans">
                    <div class="sp-list-inner">
                        <figure>
                            <a href="{{product.url}}" target="_blank">
                                <h5 class="product-inner-title">{{product.productName}}</h5>
                            </a>
                        </figure>
                    </div>
                </div>
            </div>
        </div>
        <div class="col-md-10 shop-products">
            <div class="row shop-products-listing">
                <div class="col-md-4" *ngFor="let product of filteredShirts">
                    <div class="sp-list-inner">
                        <figure>
                            <a href="{{product.url}}" target="_blank">
                                <h5 class="product-inner-title">{{product.productName}}</h5>
                            </a>
                        </figure>
                    </div>
                </div>
            </div>
        </div>

STACKBLITZ DEMO

产品

1 个答案: