一、需求

前端勾选checkbox后点击按钮打开对话框选择值并将该值通过保存传递给后端

应用场景：

代码展示：

<template>
  <div v-model="order">
    <el-button
      type="primary"
      @click="codeVisible = true"
    >
      {
    
    {
    
     t('actions.code') }}
    </el-button>
  </div>

  <el-dialog
    v-model="codeVisible"
    title="标题"
    draggable
    width="480px"
  >
    <el-form label-width="100px" :model="codeValue">
      <el-form-item :label="t('actions.code')" prop="code">
        <el-select
          v-model="codeValue"
          clearable
          style="width: 340px"
          @change="codeValueChange"
        >
          <el-option
            v-for="item in options"
            :key="item.value"
            :label="item.label"
            :value="item.value"
          />
        </el-select>
      </el-form-item>
    </el-form>

    <template #footer>
      <span class="dialog-footer">
        <el-button @click="codeVisible = false">
          {
    
    {
    
     t('global.action.close') }}</el-button
        >
        <el-button @click="saveCode" type="primary">
          {
    
    {
    
     t('global.action.save') }}</el-button
        >
      </span>
    </template>
  </el-dialog>
</template>

<script lang="ts" setup>
import {
    
    
  computed,
  defineComponent,
  h,
  onMounted,
  reactive,
  ref,
  toRefs,
} from 'vue';
import {
    
     useI18n } from 'vue-i18n';
import {
    
     ElMessage } from 'element-plus';
import {
    
     updatedCode } from '@/services';

interface ViewState {
    
    
  codeVisible: boolean;
  order: string[];
  selectedOrders: OrderVO[];
}

export default defineComponent({
    
    
  name: 'order',
  setup() {
    
    
    const state = reactive<ViewState>({
    
    
      order: "",
      codeVisible: false,
      selectedOrders: [],
    });
    const codeValue = ref('');
    const options = [
      {
    
    
        value: '12',
        label: '12',
      },
      {
    
    
        value: '13',
        label: '13',
      },
    ];
    // 所勾选的checkbox
    const selectedIds = computed<string[]>(() => {
    
    
      return state.selectedOrders.map(item => item.id as string);
    });

    const codeValueChange = computed<string>(() => {
    
    
      return codeValue.value;
    });

    function saveCode() {
    
    
      updatedCode(selectedIds.value, codeValueChange.value)
        .then(() => {
    
    
          ElMessage({
    
    
            type: 'success',
            message: t('messages.codeSuccess'),
          });
        })
        .finally(() => {
    
    
          state.codeVisible = false;
          searchOrders();
        });
    }
    return {
    
     t,state, codeValue, options, saveCode };
  },
});
</script>
<i18n>
{
    
    
  "zh": {
    
    
    "actions": {
    
    
      "code": "代码",
    },
    "messages": {
    
    
      "codeSuccess": "代码保存成功",
    },
  }
}
</i18n>