vue_(根据多种条件过滤评论内容)

一、前言                                                             

二、主要内容                                                      

1、效果分析

2、分析

　　1）根据上面的两部分的条件需要得到计算之后的新数组

　　2）评论的数据参数如下

　　满意的时候rateType=0:

　　不满意的时候rateType=1

        

　　（3）条件1：当选择 “全部” 的时候，不需要考虑“满意”，“不满意”这两个

　　（4）条件2：考虑此时是“勾选” 还是 “不勾选”状态

　　（5）综合上面两个条件，取交集

3、具体实现

　　1）我们需要从vuex中得到ratings(评论的数组)，

    data () {
      return {
        onlyShowText: true, // 是否只显示有文本的
        selectType: 2 , // 选择的评价类型: 0满意, 1不满意, 2全部
      }
    },
    mounted () {
      this.$store.dispatch('getShopRatings', () => {
        this.$nextTick(() => {
          new BScroll(this.$refs.ratings, {
            click: true
          })
        })
      })
    },

    computed: {
      ...mapState(['ratings']), //获取到评论数组

      filterRatings () { //过滤数组
                   
         const {onlyShowText, selectType, ratings} = this


         return this.ratings.filter(rating=>{
         const {text, rateType} = rating
         
      //分析：
         /*条件1：
                    1）先判断selectType是否为2，如果为2，不需考虑下面了
                    2) selectType!=2, 就考虑当前评论的
                        rateType==selectType
          总结： selectType==2 || selectType == rateType
        */
    
         /*条件2：
                    1）看onlyShowText ==false不选中，不需要考虑后面了
                    2）选中看评论的text是否大于0
         */

          return (selectType==2 || selectType == rateType)&& (!onlyShowText || text.length>0)
           
         })

      }
    },

    methods: {
      setSelectType (selectType) {
        this.selectType = selectType
      },
      toggleOnlyShowText () {
        this.onlyShowText = !this.onlyShowText
      }
    },

4、完整代码

<template>
  <div class="ratings" ref="ratings">
    <div class="ratings-content">
      <div class="overview">
        <div class="overview-left">
          <h1 class="score">{{info.score}}</h1>
          <div class="title">综合评分</div>
          <div class="rank">高于周边商家99%</div>
        </div>
        <div class="overview-right">
          <div class="score-wrapper">
            <span class="title">服务态度</span>
            <Star :score="info.serviceScore" :size="36" />
            <span class="score">{{info.serviceScore}}</span>
          </div>
          <div class="score-wrapper">
            <span class="title">商品评分</span>
            <Star :score="info.foodScore" :size="36" />
            <span class="score">{{info.foodScore}}</span>
          </div>
          <div class="delivery-wrapper">
            <span class="title">送达时间</span>
            <span class="delivery">{{info.deliveryTime}}分钟</span>
          </div>
        </div>
      </div>

      <div class="split"></div>

      <div class="ratingselect">
        <div class="rating-type border-1px">
          <span class="block positive" :class="{active: selectType===2}" @click="setSelectType(2)">
            全部<span class="count">{{ratings.length}}</span>
          </span>
          <span class="block positive" :class="{active: selectType===0}" @click="setSelectType(0)">
            满意<span class="count">{{positiveSize}}</span>
          </span>
          <span class="block negative" :class="{active: selectType===1}" @click="setSelectType(1)">
            不满意<span class="count">{{ratings.length-positiveSize}}</span>
          </span>
        </div>
        <div class="switch" :class="{on: onlyShowText}" @click="toggleOnlyShowText">
          <span class="iconfont icon-dagou"></span>
          <span class="text">只看有内容的评价</span>
        </div>
      </div>

      <div class="rating-wrapper">
        <ul>
          <li class="rating-item" v-for="(rating, index) in filterRatings" :key="index">
            <div class="avatar">
              <img width="28" height="28" :src="rating.avatar">
            </div>
            <div class="content">
              <h1 class="name">{{rating.username}}</h1>
              <div class="star-wrapper">
                <Star :score="rating.score" :size="24" />
                <span class="delivery">{{rating.deliveryTime}}</span>
              </div>
              <p class="text">{{rating.text}}</p>
              <div class="recommend">
                <span class="iconfont" :class="rating.rateType===0 ? 'icon-thumb_up' : 'icon-thumb_down'"></span>
                <span class="item" v-for="(item, index) in rating.recommend" :key="index">{{item}}</span>
              </div>
              <div class="time">{{rating.rateTime | date-format}}</div>
            </div>
          </li>
        </ul>
      </div>
    </div>
  </div>
</template>


<script>
  import BScroll from 'better-scroll'
  import {mapState, mapGetters} from 'vuex'
  import Star from '../../../components/Star/Star.vue'

  export default {

    data () {
      return {
        onlyShowText: true, // 是否只显示有文本的
        selectType: 2 , // 选择的评价类型: 0满意, 1不满意, 2全部
      }
    },
    mounted () {
      this.$store.dispatch('getShopRatings', () => {
        this.$nextTick(() => {
          new BScroll(this.$refs.ratings, {
            click: true
          })
        })
      })
    },

    computed: {
      ...mapState(['info', 'ratings']),
      ...mapGetters(['positiveSize']),

      filterRatings () {
         //条件1：
         const {onlyShowText, selectType, ratings} = this
         return this.ratings.filter(rating=>{
         const {text, rateType} = rating


          return (selectType==2 || selectType == rateType)&& (!onlyShowText || text.length>0)
           
         })

      }
    },

    methods: {
      setSelectType (selectType) {
        this.selectType = selectType
      },
      toggleOnlyShowText () {
        this.onlyShowText = !this.onlyShowText
      }
    },

    components: {
      Star
    },
  }
</script>

<style lang="stylus" rel="stylesheet/stylus">
  @import "../../../common/stylus/mixins.styl"

  .ratings
    position: absolute
    top: 195px
    bottom: 0
    left: 0
     100%
    overflow: hidden
    background: #fff
    .overview
      display: flex
      padding: 18px 0
      .overview-left
        flex: 0 0 137px
        padding: 6px 0
         137px
        border-right: 1px solid rgba(7, 17, 27, 0.1)
        text-align: center
        @media only screen and (max- 320px)
          flex: 0 0 120px
           120px
        .score
          margin-bottom: 6px
          line-height: 28px
          font-size: 24px
          color: rgb(255, 153, 0)
        .title
          margin-bottom: 8px
          line-height: 12px
          font-size: 12px
          color: rgb(7, 17, 27)
        .rank
          line-height: 10px
          font-size: 10px
          color: rgb(147, 153, 159)
      .overview-right
        flex: 1
        padding: 6px 0 6px 24px
        @media only screen and (max- 320px)
          padding-left: 6px
        .score-wrapper
          margin-bottom: 8px
          font-size: 0
          .title
            display: inline-block
            line-height: 18px
            vertical-align: top
            font-size: 12px
            color: rgb(7, 17, 27)
          .star
            display: inline-block
            margin: 0 12px
            vertical-align: top
          .score
            display: inline-block
            line-height: 18px
            vertical-align: top
            font-size: 12px
            color: rgb(255, 153, 0)
        .delivery-wrapper
          font-size: 0
          .title
            line-height: 18px
            font-size: 12px
            color: rgb(7, 17, 27)
          .delivery
            margin-left: 12px
            font-size: 12px
            color: rgb(147, 153, 159)
    .split
       100%
      height: 16px
      border-top: 1px solid rgba(7, 17, 27, 0.1)
      border-bottom: 1px solid rgba(7, 17, 27, 0.1)
      background: #f3f5f7
    .ratingselect
      .rating-type
        padding: 18px 0
        margin: 0 18px
        border-1px(rgba(7, 17, 27, 0.1))
        font-size: 0
        .block
          display: inline-block
          padding: 8px 12px
          margin-right: 8px
          line-height: 16px
          border-radius: 1px
          font-size: 12px
          color: rgb(77, 85, 93)
          background: rgba(77, 85, 93, 0.2)
          &.active
            background: $green
            color: #fff
          .count
            margin-left: 2px
            font-size: 8px
      .switch
        padding: 12px 18px
        line-height: 24px
        border-bottom: 1px solid rgba(7, 17, 27, 0.1)
        color: rgb(147, 153, 159)
        font-size: 0
        &.on
          .icon-dagou
            color: $green
        .icon-check_circle
          display: inline-block
          vertical-align: top
          margin-right: 4px
          font-size: 24px
        .text
          display: inline-block
          vertical-align: top
          font-size: 12px
    .rating-wrapper
      padding: 0 18px
      .rating-item
        display: flex
        padding: 18px 0
        bottom-border-1px(rgba(7, 17, 27, 0.1))
        .avatar
          flex: 0 0 28px
           28px
          margin-right: 12px
          img
            border-radius: 50%
        .content
          position: relative
          flex: 1
          .name
            margin-bottom: 4px
            line-height: 12px
            font-size: 10px
            color: rgb(7, 17, 27)
          .star-wrapper
            margin-bottom: 6px
            font-size: 0
            .star
              display: inline-block
              margin-right: 6px
              vertical-align: top
            .delivery
              display: inline-block
              vertical-align: top
              line-height: 12px
              font-size: 10px
              color: rgb(147, 153, 159)
          .text
            margin-bottom: 8px
            line-height: 18px
            color: rgb(7, 17, 27)
            font-size: 12px
          .recommend
            line-height: 16px
            font-size: 0
            .icon-thumb_up, .icon-thumb_down, .item
              display: inline-block
              margin: 0 8px 4px 0
              font-size: 9px
            .icon-thumb_up
              color: $yellow
            .icon-thumb_down
              color: rgb(147, 153, 159)

            .item
              padding: 0 6px
              border: 1px solid rgba(7, 17, 27, 0.1)
              border-radius: 1px
              color: rgb(147, 153, 159)
              background: #fff
          .time
            position: absolute
            top: 0
            right: 0
            line-height: 12px
            font-size: 10px
            color: rgb(147, 153, 159)
</style>

三、总结