如何将类别Id传递给vue的产品列表？

Question

当您单击Categories时，您将获得category_id，传递到产品列表，并按类别显示产品？转到jsfiddle。

如何做到这一点？如下图所示：

这个Apple类别：

​

​

这个小米类别：

​

​

查看javascropt文件：

var vm = new Vue({
  el: '#app',
  data: {
    active: 0,
    category: [{
      category_id: "1",
      category_name: "Apple"
    }, {
      categoryid: "2",
      category_name: "Xiaomi"
    }],
    products: [

      {
        category_id: "1",
        goods_name: "iphone6s",
      }, {
        category_id: "1",
        goods_name: "macbook pro"
      }, {
        category_id: "2",
        goods_name: "hongmi5 Plus"
      }
    ]
  },
  methods: {
    toggle(i, v) {
      this.active = i
      this.currentView = v
    }
  }


})

CSS文件：

.active {
  color: red;
  border-bottom: 1px solid red;
}

ul li {
  padding: 0 15px;
  float: left;
  list-style: none;
}

HTML文件：

<div id="app">

  <ul>
    <li @click="toggle($index,item.category_name)" v-for="item in category" :class="{active: active == $index}">{{ item.category_name }}</li>
  </ul>
  <br>
  <div class="layui-tab-content">
    <div class="layui-tab-item" v-for="item in products"> {{item.goods_name}}</div>
  </div>
</div>

Answer 1

您需要一个根据category_id过滤products数组的计算categoryProducts，请参见jsfiddle。

var vm = new Vue({
  el: '#app',
  data: {
    currentView: 'child1',
    active: '1',
    category: [{
      category_id: "1",
      category_name: "Apple"
    }, {
      category_id: "2",
      category_name: "Xiaomi"
    }],
    products: [
      {
        category_id: "1",
        goods_name: "iphone6s",
      }, {
        category_id: "1",
        goods_name: "macbook pro"
      }, {
        category_id: "2",
        goods_name: "hongmi5 Plus"
      }
    ]
  },
  computed: {
    categoryProducts () {
        let that = this
        return this.products.filter(p => p.category_id === that.active)
    }
  },
  methods: {
    toggle(i, v) {
      this.active = i
      console.log(i)
      //this.currentView = v
    }
  }


})