61、商品详情页

当用户在商品列表页中点击时，就会跳转到该页面。

步骤如下：

1. 新增路由

向src/router/index.js中增加：

import GoodsDetails from '@/views/shops/goods_details' 

Vue.use(Router) 

export default new Router({ 
  routes: [ 
    { 
      path: '/shops/goods_details', 
      name: 'GoodsDetails', 
      component: GoodsDetails 
    }, 
  ] 
}) 

2. 新增vue页面

向src/views/shops/goods_details 中增加：

<template> 
  <div class="background"> 
    <div class="goods_detail" style="height: 100%;"> 
      <header class="top_bar"> 
        <a onclick="window.history.go(-1)" class="icon_back"></a> 
        <h3 class="cartname">商品详情</h3> 
      </header> 
      <div class="tast_list_bd" style="padding-top: 44px;"> 
        <main class="detail_box"> 

        <!-- 轮播图 --> 
        <div class="home_ban"> 
          <div class="m_banner clearfix" id="my_banner"> 
            <ul class="banner_box" > 
              <div v-for="image in good_images"> 
                <li><img :src="image" alt="" style="height: 300px"/></li> 
              </div> 
            </ul> 
            <ul class="point_box" > 
              <li></li> 
            </ul> 
          </div> 
        </div> 

        <section class="product_info clearfix"> 
          <div class="product_left"> 
            <p class="p_name">{{good.name}}</p> 
            <div class="product_pric"> 
              <span>￥</span> 
              <span class="rel_price">{{good.price}}</span> 
              <span></span> 

              <span style='color: grey; 
              text-decoration: line-through; 
              font-size: 18px; 
              margin-left: 14px;'> 
                原价: ￥{{good.original_price}} 
              </span> 
            </div> 
            <!-- 
            <div class="product_right"> 
              降价通知 
            </div> 
            --> 
          </div> 
        </section> 

        <span class="divider" style="height: 2px;"></span> 
        <div id="choose_number" style= "height: 40px; background-color: #fff;"> 
          <label style="font-size: 18px; float: left; margin-left: 10.5px; margin-top: 7.5px;">购买数量</label> 
          <div style= "padding-top: 5px;"> 
            <img src="../../assets/add@2x.png" style="margin-right: 10px; display: inline;float:right;width:30px;" class="plus" @click="plus"/> 
            <input pattern="[0-9]*" v-model="buy_count" type="text" name="counts" style="width:30px;display: inline;float:right;border: 0.5px solid #e2e2e2;line-height:28px;text-align:center;"/> 
            <img src="../../assets/minus@2x.png" style="display: inline;float:right;width:30px;" class="minus" @click="minus"/> 
          </div> 
        </div> 

        <section class="product_intro"> 
          <div class="pro_det" v-html="good.description" style='padding: 0 6.5px;'> 
          </div> 
        </section> 
        </main> 
      </div> 

    <footer class="cart_d_footer"> 
      <div class="m"> 
        <ul class="m_box"> 
          <li class="m_item"> 
            <a @click="toCart" class="m_item_link"> 
              <em class="m_item_pic three"></em> 
              <span class="m_item_name">购物车</span> 
            </a> 
          </li> 
        </ul> 
        <div class="btn_box clearfix" > 
          <a @click="addToCart" class="buy_now">加入购物车</a> 
          <a @click="zhifu" class="buybuy">立即购买</a> 
        </div> 
      </div> 
    </footer> 

    </div> 
  </div> 
</template> 
<script> 
import { go } from '../../libs/router' 
//import { swiper, swiperSlide } from 'vue-awesome-swiper' 
import {scrollPic} from '../../libs/index.js' 

   export default{ 
        data(){ 
            return { 
                good_images: [], 
                good: "", 
                buy_count: 1, 
                good_id: this.$route.query.good_id, 
            } 
        }, 
        watch:{ 
        }, 
        mounted(){ 
          scrollPic();   //轮播图 

          this.$http.get(this.$configs.api + 'goods/goods_details?good_id=' + this.good_id).then((response)=>{ 
            console.info(this.good_id) 
            console.info(response.body) 
            this.good = response.body.good 
            this.good_images = response.body.good_images 

          },(error) => { 
            console.error(error) 
          }); 
        }, 
        methods:{ 
          addToCart () { 
            alert("商品已经加入到了购物车") 
            let goods = { 
              id: this.good_id, 
              title: this.good.name, 
              quantity: this.buy_count, 
              price: this.good.price, 
              image: this.good_images[0] 
            } 
            this.$store.dispatch('addToCart', goods) 
          }, 
          toCart () { 
            go("/cart", this.$router) 
          }, 
          plus () { 
            this.buy_count = this.buy_count + 1 
          }, 
          minus () { 
            if(this.buy_count > 1) { 
              this.buy_count = this.buy_count - 1 
            } 
          }, 
          zhifu () { 
            go("/shops/dingdanzhifu?good_id=" + this.good_id + "&buy_count=" + this.buy_count, this.$router) 
          }, 
        }, 
        components: { 
        }, 
                computed: { 
                } 
    } 
</script> 

在上面的代码中，

1、 实现了加入购物车的方法；
2、 实现了对于支付页面的跳转；
3、 实现了从远程接口读取数据；

3. 添加物品到购物车

下面的代码是把某个商品添加到购物车中:

addToCart () { 
    console.info('加入购物车') 
    alert("商品已经加入到了购物车") 
    let goods = { 
        id: this.good_id, 
        title: this.good.name, 
        quantity: this.buy_count, 
        price: this.good.price, 
        image: this.good_images[0] 
    } 
    this.$store.dispatch('addToCart', goods) 
}, 

同时，在 src/vuex/actions.js中，添加如下代码:

export const addToCart = ({ commit }, product) => { 
    commit(types.ADD_TO_CART, { 
      id: parseInt(product.id), 
      image: product.image, 
      title: product.title, 
      quantity: product.quantity, 
      price: product.price 
    }) 
} 

看效果

总结

• 购物车使用了Vuex来保存数据。 下一节会详述。
• 进入到支付页面，在后面会详述。 这个页面我们只加上一个链接就好了
• 本页面使用了后台提供的接口，会返回必要的数据。 接口结构略。

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