017：将普通json 处理为 el-tree 树形结构

短命女 2024-03-16 19:27 57阅读 0赞

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第017个

查看专栏目录: [VUE][] — [element UI][]

vue在使用element UI tree的时候，需要按照了element UI-tree的结构来处理数据。那么如何来处理呢？请参考下面的方法示例

### 通常原始数据格式为： ###

datas: [ 
          {
         
            id: 13, 
            parentId: 0, 
            order: 1, 
            name: "truck" 
          }, 
          {
         
            id: 16, 
            pluginId: null, 
            parentId: 0, 
            order: 1, 
            name: "sca" 
          }, 
          {
         
            id: 17, 
            pluginId: 6, 
            parentId: 16, 
            order: 1, 
            name: "abcf" 
          }, 
          {
         
            id: 18, 
            pluginId: 13, 
            parentId: 13, 
            order: 1, 
            name: "dddd" 
          } 
        ]

### 改变后的格式为： ###

newdatas: [ 
            {
         
              id: 13, 
              name: "truck", 
              order: 1, 
              parentId: 0, 
              children: [ 
                {
         id: 18, name: "dddd", order: 1, parentId: 13, children: [] } 
              ] 
            }, 
            {
         
              id: 16, 
              name: "sca", 
              order: 1, 
              parentId: 0, 
              children: [ 
                {
         id: 17, name: "abcf", order: 1, parentId: 16, children: [] } 
              ] 
            } 
          ],

### 实现的方法为： ###

getListData() {
         
        let dataArray = []; 
        this.datas.forEach(function(data) {
         
          // if (data.enabled == true) { 
          let parentId = data.parentId; 
          if (parentId == 0) {
         
            let objTemp = {
         
              id: data.id, 
              name: data.name, 
              order: data.order, 
              parentId: parentId 
            }; 
            dataArray.push(objTemp); 
          } 
          // } 
        }); 
        this.data2treeDG(this.datas, dataArray); 
        this.newdatas = dataArray; 
      
      }, 
      data2treeDG(datas, dataArray) {
         
        for (let j = 0; j < dataArray.length; j++) {
         
          let dataArrayIndex = dataArray[j]; 
          let childrenArray = []; 
          let Id = dataArrayIndex.id; 
          for (let i = 0; i < datas.length; i++) {
         
            let data = datas[i]; 
            // if (data.enabled == true) { 
            let parentId = data.parentId; 
            if (parentId == Id) {
         
              //判断是否为儿子节点 
              let objTemp = {
         
                id: data.id, 
                name: data.name, 
                order: data.order, 
                parentId: parentId 
              }; 
              childrenArray.push(objTemp); 
            } 
            // } 
          } 
          dataArrayIndex.children = childrenArray; 
          if (childrenArray.length > 0) {
         
            //有儿子节点则递归 
            this.data2treeDG(datas, childrenArray); 
          } 
        } 
        return dataArray; 
      },

### 专栏目标 ###

在vue和element UI联合技术栈的操控下，本专栏提供行之有效的源代码示例和信息点介绍，做到灵活运用。

（1）提供vue2的一些基本操作：安装、引用，模板使用，computed，watch，生命周期(beforeCreate，created,beforeMount，mounted, beforeUpdate，updated, beforeDestroy，destroyed，activated，deactivated，errorCaptured，components，)、 $root , $parent , $children , $slots , $refs , props, $emit , eventbus ,provide / inject, Vue.observable, $listeners, $attrs, $nextTick , v-for, v-if, v-else,v-else-if，v-on，v-pre，v-cloak，v-once，v-model， v-html, v-text, keep-alive，slot-scope， filters, v-bind，.stop, .native, directives，mixin，render，国际化，Vue Router等

（2）提供element UI的经典操作：安装，引用，国际化，el-row，el-col，el-button，el-link，el-radio，el-checkbox ，el-input，el-select, el-cascader, el-input-number, el-switch,el-slider, el-time-picker, el-date-picker, el-upload, el-rate, el-color-picker, el-transfer, el-form, el-table, el-tree, el-pagination,el-badge,el-avatar,el-skeleton, el-empty, el-descriptions, el-result, el-statistic, el-alert, v-loading, $message, $alert, $prompt, $confirm , $notify, el-breadcrumb, el-page-header,el-tabs ,el-dropdown,el-steps,el-dialog, el-tooltip, el-popover, el-popconfirm, el-card, el-carousel, el-collapse, el-timeline, el-divider, el-calendar, el-image, el-backtop，v-infinite-scroll， el-drawer等

[32d2a1d099334cfba6adc4f84dd79e22.png_pic_center]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/15/b919021534bd45209f7587b450922720.png
[VUE]: https://blog.csdn.net/cuclife/article/details/131138955
[element UI]: https://blog.csdn.net/cuclife/article/details/131140113