vue实现v-model父子组件间的双向通信

首先讲清楚有个缺点：父页面若同时使用多个子组件，永远只会只能实现第一个双向驱动，我是新手，还在研究。如果有高手请指教，感谢！

子组件

<script>
  export default {
    model: {   
      prop: 'path',
      event: 'cc'
    },
    props: {
      label: {type: String, default: '点击'},
      path:String,
    },

    methods: {
      btnChange() {
        this.$emit('cc', res.data)
      },

    },    
    
  }
</script>

<template>
  <div>
    <el-input :value="path" disabled></el-input>
    <el-button size="small" type="primary" @click="btnChange">{{label}}</el-button>
  </div>  
</template>

父组件

<template>
  <div>
    <subinput v-model="form.text"/>
  </div>  
</template>

<script>
  import subinput from '@/components/Upload.vue'
  export default {
    components: {
      subinput 
    },
    data() {
      return {
        activeName: 'first',
        form: {text:''},
      }
    }
}

</script>