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我正在使用Vue-Multiselect插件作为输入下拉框，并在填写表格时尝试获取客户的姓氏。出于某种原因，我只是得到一个object作为issue.customer_last_name属性的值（见下面的截图）。我想得到一个 string Doe，而不是。

有人有想法么 ？我的目标是最终通过提交按钮将此数据（POST 请求）提交到远程 api。

在此处输入图像描述

复制问题的代码和框链接： https ://codesandbox.io/s/vue-template-9z1wd ?fontsize=14&module=%2Fsrc%2Fcomponents%2FTest.vue

完整代码：

<template>
  <div>
    <label for="customer_last_name_input">Last Name:</label>
    <multiselect
      id="customer_last_name_input"
      v-model="issue.customer_last_name"
      :options="customers"
      placeholder="Select an existing customer or type to add a new one"
      :custom-label="customerSelectName"
      label="lastname"
      track-by="uid"
      :close-on-select="true"
      @select="onSelect"
    ></multiselect>
    <br>
    <!-- <input id="customer_last_name_input" type="text" class="form-control" v-model="issue.customer_last_name" placeholder required /> -->
    <div>
      <label for="customer_first_name_input">First Name:</label>
      <input
        id="customer_first_name_input"
        type="text"
        v-model="issue.customer_first_name"
        placeholder
        required
      >
    </div>
  </div>
</template>

<script>
import Multiselect from "vue-multiselect";
export default {
  name: "test",
  components: {
    Multiselect
  },
  data() {
    return {
      customers: [
        {
          uid: "1",
          firstname: "John",
          lastname: "Doe",
          email: "johndoe@aol.com",
          phone: null,
          c_organization: "ACME",
          c_title: null
        },
        {
          uid: "2",
          firstname: "Mary",
          lastname: "Smith",
          email: "msmith@aol.com",
          phone: null,
          c_organization: "NBA",
          c_title: "Miss"
        }
      ],
      issue: {
        customer_first_name: "",
        customer_last_name: ""
        //customer_email: ""
      }
    };
  },
  // async created() {
  //   await this.getCustomers()
  // },
  methods: {
    customerSelectName(option) {
      //return `${option.lastname}, ${option.firstname}`
      return `${option.lastname}, ${option.firstname}`;
    },
    onSelect(option) {
      console.log(option.lastname);
      this.issue.customer_last_name = option.lastname;
      this.issue.customer_first_name = option.firstname;
      // this.issue.customer_email = option.email
    }
  }
};
</script>
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1 回答 1

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问题在于v-model="issue.customer_last_name"多选本身。这将多选组件的选择设置为用户选择的整个对象，而不仅仅是姓氏。

由于您使用@select="onSelect"的是进行所有必要的更新，只需删除 v-model（代码沙箱中的第 6 行）即可完成所有设置。

编辑添加：

当您看到 unhelpful[object Object]时，将其渲染到其他地方可能会很有用，在那里它更有可能被完全扩展。这一切都取决于浏览器，但添加<div>{{issue.customer_last_name}}</div>是一个有用的调试工具。

于 2019-11-07T19:49:48.457 回答