elementui级联选择器实现一级单选 二级多选

elementui原生并不支持这种  场景只能魔改一下 下面直接上代码

<template>
  <el-cascader
    v-model="selectedValues"
    :options="modifiedOptions"
    :props="{ multiple: true, checkStrictly: true }"
    collapse-tags
    ref="refSelect"
    :show-all-levels="false"
    @change="changeLabel"
    clearable
  ></el-cascader>
</template>

<script>
export default {
  props: {
    cascaderOptions: {
      type: Array
    }
  },
  mounted() {
    console.log(this.$refs.cascader)
  },
  data() {
    return {
      selectedValues: [],
      shareScopeEnd: []
    }
  },
  computed: {
    modifiedOptions() {
      return this.cascaderOptions.map((option) => {
        if (option.children) {
          return {
            ...option,
            disabled: true
          }
        } else {
          return option
        }
      })
    }
  },
  methods: {
    changeLabel(val) {