vue中select繫結多個值

不再通過v-model和value進行繫結
而是通過繫結索引值Index
然後通過定義@input=change方法，通過索引值獲取並更新想要繫結的多個值

<el-select v-model="basic_info.itemindex" placeholder=""  @input="change">
	<el-option v-for="(item,index) in categoryList" :key=index :label="item.categoryName" :value="index" />
</el-select>

change(index) {
      this.basic_info.categoryCode = this.categoryList[index].categoryCode
      this.default_return_value = this.categoryList[index].defaultReturnValue
},