【愚公系列】2022年11月 uniapp专题-优购电商首页-搜索页面

<template>
  <view class="my-search-container" :style="{ 'background-color': bgcolor }" @click="searchBoxHandler">
    <view class="my-search-box" :style="{ 'border-radius': radius + 'px' }">
      <!-- 使用 uni-ui 提供的图标组件 -->
      <uni-icons type="search" size="17"></uni-icons>
      <text class="placeholder">搜索</text>
    </view>
  </view>
</template>

<script>
  export default {
    props: {
      // 背景颜色
      bgcolor: {
        type: String,
        default: '#C00000'
      },
      // 圆角尺寸
      radius: {
        type: Number,
        default: 18 // px
      }
    },
    data() {
      return {

      }
    },
    methods: {
      searchBoxHandler() {
        this.$emit('click')
      }
    }
  }
</script>

<style lang="scss">
  .my-search-container {
    height: 50px;
    // background-color: #C00000;
    display: flex;
    align-items: center;
    padding: 0 10px;

    .my-search-box {
      height: 36px;
      background-color: #FFFFFF;
      // border-radius: 18px;
      width: 100%;
      display: flex;
      justify-content: center;
      align-items: center;

      .placeholder {
        font-size: 15px;
        margin-left: 5px;
      }
    }
  }
</style>

<template>
  <view>
    <view class="search-box">
      <uni-search-bar @input="input" :radius="100" cancelButton="none"></uni-search-bar>
    </view>

    <!-- 搜索建议列表 -->
    <view class="sugg-list" v-if="searchResults.length !== 0">
      <view class="sugg-item" v-for="(item, i) in searchResults" :key="i" @click="gotoDetail(item)">
        <view class="goods-name">{{item.goods_name}}</view>
        <uni-icons type="arrowright" size="16"></uni-icons>
      </view>
    </view>

    <!-- 搜索历史 -->
    <view class="history-box" v-else>
      <!-- 标题区域 -->
      <view class="history-title">
        <text>搜索历史</text>
        <uni-icons type="trash" size="17" @click="clean"></uni-icons>
      </view>
      <!-- 列表区域 -->
      <view class="history-list">
        <uni-tag :text="item" v-for="(item, i) in histories" :key="i" @click="gotoGoodsList(item)"></uni-tag>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        timer: null,
        kw: '',
        // 搜索的结果列表
        searchResults: [],
        // 搜索历史的数组
        historyList: []
      };
    },
    onLoad() {
      this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
    },
    methods: {
      // input 输入事件的处理函数
      input(e) {
        clearTimeout(this.timer)

        this.timer = setTimeout(() => {
          this.kw = e.value
          this.getSearchList()
        }, 500)
      },
      async getSearchList() {
        // 判断搜索关键词是否为空
        if (this.kw.length === 0) {
          this.searchResults = []
          return
        }

        const { data: res } = await uni.$http.get('/api/public/v1/goods/qsearch', { query: this.kw })
        if (res.meta.status !== 200) return uni.$showMsg()
        this.searchResults = res.message

        this.saveSearchHistory()
      },
      gotoDetail(item) {
        uni.navigateTo({
          url: '/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
        })
      },
      saveSearchHistory() {
        // this.historyList.push(this.kw)

        const set = new Set(this.historyList)
        set.delete(this.kw)
        set.add(this.kw)

        this.historyList = Array.from(set)

        // 对搜索历史数据，进行持久化的存储
        uni.setStorageSync('kw', JSON.stringify(this.historyList))
      },
      clean() {
        this.historyList = []
        uni.setStorageSync('kw', '[]')
      },
      gotoGoodsList(kw) {
        uni.navigateTo({
          url: '/subpkg/goods_list/goods_list?query=' + kw
        })
      }
    },
    computed: {
      histories() {
        return [...this.historyList].reverse()
      }
    }
  }
</script>

<style lang="scss">
  .search-box {
    position: sticky;
    top: 0;
    z-index: 999;
  }

  .sugg-list {
    padding: 0 5px;

    .sugg-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 12px;
      padding: 13px 0;
      border-bottom: 1px solid #efefef;

      .goods-name {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        margin-right: 3px;
      }
    }
  }

  .history-box {
    padding: 0 5px;

    .history-title {
      display: flex;
      justify-content: space-between;
      height: 40px;
      align-items: center;
      font-size: 13px;
      border-bottom: 1px solid #efefef;
    }

    .history-list {
      display: flex;
      flex-wrap: wrap;

      .uni-tag {
        margin-top: 5px;
        margin-right: 5px;
      }
    }
  }
</style>