setindex = (data) => {
        let queue = [...data];
        let loop = 0;
        while (queue.length > 0) {
          loop++
          [...queue].foreach((child, i) => {
            queue.shift()
            if (loop == 1) {
              child.customindex = i + 1 + "";
              child.currentindex = i;
            }
            if (child.children && child.children.length > 0) {
              child.datatype = 1
              for (let ci = 0; ci < child.children.length; ci++) {
                child.children[ci].currentindex = ci
                child.children[ci].customindex = child.customindex + "." + (ci + 1)
              }
              queue.push(...child.children)
            } else {
              child.datatype = 2
            }
          })
        }
      }
      const rows = [
        {
          id: "1",
          date: "2016-05-02",
          name: "王小虎1",
          address: "上海市普陀区金沙江路 1518 弄",
          children: [
            {
              name: "233",
              customindex: "1.1",
              children: [{name: "9"}]
            },
            {
              name: "7771",
              customindex: "1.2",
              children: [
                {
                  name: "9"
                }, 
                {
                  name: "9",
                }]
            }
          ]
        },
        {
          id: "2",
          date: "2016-05-04",
          name: "王小虎2",
          address: "上海市普陀区金沙江路 1517 弄",
          children: []
        },
       ]
 setindex(rows)    

 <el-form ref="form" :model="form" label-width="80px" :rules="rules">
      <el-form-item label-width="0" prop="rows">
        <el-table>
        </el-table>
      </el-form-item>
    </el-form>

<el-table-column
              prop="name"
              label="姓名"
              sortable
              width="180">
            <template v-slot="{$index, row}">
                           {{`rows${getpathbykey(row.customindex,"customindex",form.rows)}.name`}}
              <el-form-item label-width="0" :rules="rules.name"
                     :prop="`${row.customindex!=='tempindex'?`rows${getpathbykey(row.customindex,'customindex',form.rows)}.name`:''}`">
                <el-input v-model="row.name"></el-input>
              </el-form-item>
            </template>
          </el-table-column>

 getpathbykey = (value, key, arr) => {
        let temppath = [];
        let realpath = ""
        try {
          function getnodepath(node) {
            temppath.push(node.currentindex);
            //找到符合条件的节点，通过throw终止掉递归
            if (node[key] === value) {
              temppath.foreach((v, i) => {
                if (i == 0) {
                  realpath += "." + v
                } else {
                  realpath += `.children.${v}`
                }
              })
              // temppath = temppath.join(",")
              throw ("got it!");
              // return;
            }
            if (node.children && node.children.length > 0) {
              for (var i = 0; i < node.children.length; i++) {
                getnodepath(node.children[i]);
              }

              //当前节点的子节点遍历完依旧没找到，则删除路径中的该节点
              temppath.pop();
            } else {

              //找到叶子节点时，删除路径当中的该叶子节点
              temppath.pop();
            }
          }

          for (let i = 0; i < arr.length; i++) {
            getnodepath(arr[i]);
          }
        } catch (e) {
          return realpath;
        }
      },