递归组件自己调用自己，子数据如何显示呢？

来源：1-2 Vue项目详情页 - 公用图片画廊组件拆分（1）

unbreakable_全栈

2020-12-05 23:01:19

# 具体遇到的问题

# 报错信息的截图

# 相关课程内容截图

# 尝试过的解决思路和结果

# 粘贴全部相关代码，切记添加代码注释（请勿截图）

<template>
   <div>
      <detail-banner :bannerImg="bannerImg" :sightName="sightName" :gallaryImgs="gallaryImgs"></detail-banner>
      <detail-header></detail-header>
      <div class="content">
         
         <detail-list></detail-list>
      </div>
   </div>
</template>

<script>
import DetailBanner from './components/Banner'
import DetailHeader from './components/Header'
import DetailList from './components/List'
import axios from 'axios'
import bus from '../../bus'

export default {
  name: 'detail', // name 的用处一：递归组件用处二: 对某个页面取消缓存的时候 exclude="detail"
  data () {
    return {
      bannerImg: '',
      sightName: '',
      gallaryImgs: []
      // categoryList: []
    }
  },
  components: {
    DetailBanner,
    DetailHeader,
    DetailList
  },
  methods: {
    getDetailInfo () {
      axios.get('/api/detail.json', {
        params: {
          id: this.$route.params.id
        }
      }).then(this.getDetailInfoSucc)
    },
    getDetailInfoSucc (res) {
      const data = res.data
      if (data.ret && data.data) {
        const res = data.data
        this.bannerImg = res.bannerImg
        this.sightName = res.sightName
        this.gallaryImgs = res.gallaryImgs
        // this.categoryList = res.categoryList
        bus.$emit('categoryListData', res.categoryList)
      }
    }
  },
  mounted () {
    this.getDetailInfo()
  }
}
</script>

<style lang="stylus" scoped>
.content
   height 50rem
</style>

-----------------------------------
<template>
   <div class="detail-list">
      <div class="item" v-for="(item, index) in this.categoryList" :key="index">
         <div class="item-title border-bottom">
            <span class="item-title-icon"></span>
            {{item.title}}
         </div>
         <div class="item-children" v-if="item.children">
            
            
            <detail-list></detail-list>
         </div>
      </div>
   </div>
</template>

<script>
import bus from '../../../bus'
export default {
  name: 'detailList',
  //   props: {
  //     categoryList: {
  //       type: Array
  //     }
  //   },
  data () {
    return {
      categoryList: []
    }
  },
  mounted () {
     bus.$on('categoryListData', (val) => {
        this.categoryList = val
     })
  }
}
</script>

<style lang="stylus" scoped>
.detail-list
   .item
      .item-title
         line-height .8rem
         font-size .32rem
         padding 0 .2rem
         .item-title-icon
            position relative
            top .06rem
            left .06rem
            display inline-block
            width .36rem
            height .36rem
            margin-right .1rem
            background url(http://s.qunarzz.com/piao/image/touch/sight/detail.png) 0 -.45rem no-repeat
            background-size .4rem 3rem
      .item-children
         padding 0 .2rem
</style>