vue的父子传值的值赋值处理导致界面数据没渲染

现象：

image.png

在vue的生命周期钩子函数中进行赋值并未生效，
父组件

<template>
  <div class="app-container">
    <el-card class="box-card">
      <div slot="header" class="clearfix">
        <span>用户管理</span>
        <!--        <el-button style="float: right; padding: 3px 0" type="text">操作按钮</el-button>-->
      </div>
      <el-form ref="form" :inline="true" :model="searchForm" @submit.native.prevent>
        <el-form-item label="所属网站" prop="gatherId">
          <el-select
            v-model="searchForm.value"
            style="width:375px !important"
            filterable
            clearable
            remote
            reserve-keyword
            placeholder="请输入网址关键词"
            :remote-method="remoteMethod"
          >
            <el-option
              v-for="item in options"
              :key="item.urlId"
              :label="item.url"
              :value="item.urlId"
            />
          </el-select>
        </el-form-item>
        <el-form-item>
          <el-button
            type="primary"
            icon="el-icon-search"
            native-type="submit"
            :loading="searchLoading"
            @click="search"
          >搜索
          </el-button>
          <el-button
            type="info"
            plain
            icon="el-icon-refresh-left"
            @click="reset"
          >重置
          </el-button>
        </el-form-item>
      </el-form>
      <el-table
        ref="multipleTable"
        :data="tableData"
        tooltip-effect="dark"
        style="width: 100%"
        @selection-change="handleSelectionChange"
      >
        <el-table-column
          type="selection"
          width="55"
        />
        <el-table-column align="center" label="序列" width="50">
          <template slot-scope="scope">
            {{ scope.$index + 1 }}
          </template>
        </el-table-column>
        <el-table-column
          label="推荐码"
        >
          <template slot-scope="scope">{{ scope.row.date }}</template>
        </el-table-column>
        <el-table-column
          prop="name"
          label="用户角色"
        />
        <el-table-column
          prop="address"
          label="上级"
          show-overflow-tooltip
        />
        <el-table-column
          prop="address"
          label="用户名"
          show-overflow-tooltip
        />
        <el-table-column
          prop="address"
          label="email"
          show-overflow-tooltip
        />
        <el-table-column
          prop="address"
          label="登录次数"
          show-overflow-tooltip
        />
        <el-table-column
          prop="address"
          label="登录地点"
          show-overflow-tooltip
        />
        <el-table-column
          prop="address"
          label="登录IP"
          show-overflow-tooltip
        />
        <el-table-column
          prop="address"
          label="日期"
          show-overflow-tooltip
        />
        <el-table-column label="操作" align="center" width="200">
          <template slot-scope="scope">
            <el-button
              type="info"
              icon="el-icon-edit"
              native-type="submit"
              size="mini"
              @click="edit(scope.row)"
            >编辑
            </el-button>
            <el-button
              type="info"
              icon="el-icon-delete"
              native-type="submit"
              size="mini"
              @click="examine(scope.row.urlId)"
            >删除
            </el-button>
          </template>
        </el-table-column>
      </el-table>
      <div class="myPagination">
        <el-pagination
          hide-on-single-page
          background
          :current-page.sync="currentPage"
          :page-size="pageSize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
        />
      </div>
    </el-card>
    <user-edit ref="userEditDialog" :use-data="selectData" />
  </div>
</template>
<style>
.myPagination {
  display: flex;
  margin-top: 15px;
  justify-content: flex-end;
}
</style>
<script>

import { getAccessReport, getUrl } from '@/api/user'
import UserEdit from '@/views/user/userEdit'

var _self
export default {
  name: 'User',
  components: { UserEdit },
  data() {
    return {
      tableData: [{
        date: '2016-05-03',
        name: '王小虎',
        address: '上海市普陀区'
      }, {
        date: '2016-05-02',
        name: '王小虎',
        address: '上海市普陀区'
      }, {
        date: '2016-05-04',
        name: '王小虎',
        address: '上海市普陀区'
      }, {
        date: '2016-05-01',
        name: '王小虎',
        address: '上海市普陀区'
      }, {
        date: '2016-05-08',
        name: '王小虎',
        address: '上海市普陀区'
      }, {
        date: '2016-05-06',
        name: '王小虎',
        address: '上海市普陀区'
      }, {
        date: '2016-05-07',
        name: '王小虎',
        address: '上海市普陀区'
      }], // 表格内容
      multipleSelection: [], // 多选内容
      listLoading: false, // 表格加载等待
      searchLoading: false, // 搜索等待
      getUrlloading: false, // 网站搜索加载等待
      options: [], // 搜索下拉框内容
      total: 0, // 总条数
      pageSize: 10, // 每页条数
      currentPage: 1, // 页码
      searchForm: {
        value: null, // url地址
        lastTime: []// 起止时间
      },
      selectData: {} // 选中的该行数据(用于编辑弹窗)
    }
  },
  created() {
    _self = this
    _self.getList()
  },
  methods: {
    // 下拉搜索网址
    remoteMethod(query) {
      if (query !== '') {
        _self.getUrlloading = true
        const params = {
          'url': query
        }
        getUrl(params).then(res => {
          if (res.code == 0) {
            _self.options = res.data
          }
        }).finally(() => {
          _self.getUrlloading = false
        })
      } else {
        _self.options = []
      }
    },
    // 搜索table
    search() {
      // if (_self.searchForm.value != null || _self.searchForm.lastTime[0] != undefined) {
      //   console.log(_self.searchForm)
      //   _self.getList()// 获取表格数据
      // } else {
      //   this.$message.error('请选择搜索内容')
      // }
      _self.getList()// 获取表格数据
    },
    // 重置事件
    reset() {
      _self.searchForm.value = ''
      _self.searchForm.lastTime = []
      _self.urlId = ''
      _self.pageSize = 10
      _self.currentPage = 1
      _self.getList()
    },
    // 获取table数据
    getList() {
      _self.listLoading = true
      const params = {
        'startTime': _self.searchForm.lastTime[0] == undefined ? '' : _self.searchForm.lastTime[0],
        'endTime': _self.searchForm.lastTime[1] == undefined ? '' : _self.searchForm.lastTime[1],
        'urlId': _self.searchForm.value,
        'pageNum': _self.currentPage,
        'pageSize': _self.pageSize
      }
      getAccessReport(params).then(res => {
        if (res.code == 0) {
          _self.tableList = res.data.rows
          _self.total = res.data.total
          _self.pageSize = res.data.pageSize
          _self.currentPage = res.data.pageNum
        }
      }).catch(err => {
        console.log(err)
      }).finally(() => {
        _self.listLoading = false
      })
    },
    // 条数pagesize切换事件
    handleSizeChange(val) {
      this.pageSize = val
      this.getList()
    },
    handleCurrentChange(val) {
      this.currentPage = val
      this.getList()
    },
    // 详情 跳转按钮
    examine(listId) {
      _self.$router.push({
        path: 'table',
        query: {
          listId: listId,
          times: _self.searchForm.lastTime
        }
      })
    },
    // 打开编辑弹窗
    edit(data) {
      this.$refs['userEditDialog'].dialogVisible = true
      this.selectData = data
    },
    // 处理选择的
    handleSelectionChange(val) {
      this.multipleSelection = val
    }
  }
}
</script>

<style scoped>

</style>

子组件：

<template>
  <el-dialog
    title="提示"
    :visible.sync="dialogVisible"
    width="30%"
    :before-close="handleClose"
  >
    <el-form :label-position="labelPosition" label-width="80px" :model="formLabelAlign">
      <el-form-item label="用户名">
        <el-input v-model="formLabelAlign.date" />
      </el-form-item>
      <el-form-item label="上级">
        <el-input v-model="formLabelAlign.name" />
      </el-form-item>
      <el-form-item label="用户角色">
        <el-input v-model="formLabelAlign.address" />
      </el-form-item>
    </el-form>
    <span slot="footer" class="dialog-footer">
      {{ useData }}
      <el-button @click="dialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="dialogVisible = false">确 定</el-button>
    </span>
  </el-dialog>
</template>

<script>
export default {
  name: 'UserEdit',
  props: {
    useData: Object
  },
  data() {
    return {
      dialogVisible: false,
      labelPosition: 'right',
      formLabelAlign: {
        date: '',
        name: '',
        address: ''
      }
    }
  },
  watch: {
    useData(newVal) {
      this.formLabelAlign = newVal
    }
  },
  methods: {
    created() {
      console.log(this.useData)
      this.formLabelAlign = this.useData
    },
    handleClose(done) {
      this.$confirm('确认关闭？')
        .then(_ => {
          done()
        })
        .catch(_ => {})
    }
  }
}
</script>

<style scoped>

</style>

需要把代码改成watch赋值，对于props的变量

image.png