antdvue树选择组件a-tree-select，只有叶子节点可以被选中

【效果】只有叶子节点可以被选中

 【步骤】按步骤copy即可（vue2版本）

1、html中

<a-tree-select
            v-model="ffid"
            show-search
            style="width: 100%"
            :dropdown-style="{ maxHeight: '400px', overflow: 'auto' }"
            placeholder="请从标签树中选择"
            allow-clear
            multiple
            :tree-default-expand-all="false"
            :tree-data="treeData"
            :replace-fields="{children:'children', key:'id', value: 'id', title: 'name'}"
          >
</a-tree-select>

2、js中

2.1data中：

data () {
    return {
      ffid:''.
      treeData: [{
        name: 'parent 1',
        id: 'parent 1',
        children: [{
          name: 'parent 1-0',
          id: 'parent 1-0',
          children: [{
            name: 'my leaf',
            id: 'leaf1'
          }, {
            name: 'your leaf',
            id: 'leaf2'
          }]
        }, {
          name: 'parent 1-1',
          id: 'parent 1-1'
        }]
      }]
    }
  },

2.2mounted、method中：

  mounted () {
    this.treeData = this.dealData(this.treeData)
  },
  methods () {
    dealData (param) {
      return param.map(item => ({
        ...item,
        disabled: !!item.children,
        children: item.children ? this.dealData(item.children) : []
      }))
  },