vue中点击切换按钮功能之点启用后按钮变为禁用

<template>
  <el-table
    :data="tableData"
    border
    style="width: 100%">
    <el-table-column
      fixed
      prop="date"
      label="日期"
      width="200">
    </el-table-column>
     <el-table-column
      prop="state"
      label="状态"
      width="150">
    </el-table-column>
    <el-table-column
      prop="name"
      label="姓名"
      width="120">
      <template slot-scope="scope">
            <el-input placeholder="请输入内容" v-show="scope.row.show" v-model="scope.row.姓名">
            </el-input>
            <span v-show="!scope.row.show">{{scope.row.姓名}}
            </span>
        </template>
    </el-table-column>
    <el-table-column
      prop="province"
      label="省份"
      width="120">
    </el-table-column>
    <el-table-column
      prop="city"
      label="市区"
      width="120">
    </el-table-column>
    <el-table-column
      prop="address"
      label="地址"
      width="300"
       :show-overflow-tooltip="true" >
    </el-table-column>
    <el-table-column
      prop="zip"
      label="邮编"
      width="120">
    </el-table-column>
    <el-table-column
      fixed="right"
      label="操作"
      width="300">
      <template slot-scope="scope">
        <el-button @click="handleClick(scope.row)" type="text" size="small">查看</el-button>
        <el-button @click="scope.row.show =true" type="text" size="small">编辑</el-button>
        <el-button @click="scope.row.show =false" type="text" size="small">保存</el-button>
        <el-button @click="changeStatus" type="text" size="small" v-if="btnStatus == 0">启用</el-button>
        <el-button @click="changeStatus" type="text" size="small" v-show="btnStatus == 1">禁用</el-button>

      </template>

    </el-table-column>
  </el-table>
</template>

<script>
  export default {
    methods: {
      handleClick(row) {
        console.log(row);
      },
      changeStatus(){
                this.btnStatus = this.btnStatus === 0 ? 1 : 0;
            }
    },

    data() {
      return {
          btnStatus: 0,
        tableData: [{
          date: '2016-05-02',

          name: '王小虎王小虎王小虎王小虎王小虎王小虎王小虎王小虎王小虎王小虎王小虎王小虎王小虎王小虎王小虎王小虎王小虎王小虎王小虎',
          province: '上海',
          city: '普陀区',
          address: '上海市普陀区金沙江路 1518 弄上海市普陀区金沙江路 1518 弄',
          zip: 200333,
          show:true
        }, {
          date: '2016-05-04',

          name: '王小虎',
          province: '上海',
          city: '普陀区',
          address: '上海市普陀区金沙江路 1517 弄',
          zip: 200333,
          show:true
        }]
      }
    }
}
</script>