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我想在下拉框显示的信息父亲的name,但又更改的id值,不知道怎么做。

子数据v-model绑定的是name值,传入到下拉框中的也是父亲的name值,但是我想更改id值,就必须把v-model的值改成id,但是我想在下拉框显示的信息父亲的name,但又更改的id值,不知道怎么做。
<el-form-item label="供应商名称" prop="supplierId">
<el-select

      v-model="form.supplierId" 
      v-bind:value="form.supplierName"
      placeholder="选择供应商">
      <el-option
      v-for="(item,index) in supplierList"
        :key="index"
        :label="item.name"
        :value="item.id">
        <span class="float-left">{{ item.name }}</span>
        <span class="select-notes">{{ item.id }}</span>
      </el-option>
    </el-select>
   </el-form-item>

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