ant-design-vue/components/table/demo/expand-children.md

<cn>
#### 树形数据展示
表格支持树形数据的展示，当数据中有 `children` 字段时会自动展示为树形表格，如果不需要或配置为其他字段可以用 `childrenColumnName` 进行配置。
可以通过设置 `indentSize` 以控制每一层的缩进宽度。
> 注：暂不支持父子数据递归关联选择。
</cn>

<us>
#### Tree data
Display tree structure data in Table when there is field key `children` in dataSource, try to customize `childrenColumnName` property to avoid tree table structure.
You can control the indent width by setting `indentSize`.
> Note, no support for recursive selection of tree structure data table yet.
</us>

```html
<template>
  <a-table :columns="columns" :dataSource="data" :rowSelection="rowSelection" />
</template>
<script>
const columns = [{
  title: 'Name',
  dataIndex: 'name',
  key: 'name',
}, {
  title: 'Age',
  dataIndex: 'age',
  key: 'age',
  width: '12%',
}, {
  title: 'Address',
  dataIndex: 'address',
  width: '30%',
  key: 'address',
}];

const data = [{
  key: 1,
  name: 'John Brown sr.',
  age: 60,
  address: 'New York No. 1 Lake Park',
  children: [{
    key: 11,
    name: 'John Brown',
    age: 42,
    address: 'New York No. 2 Lake Park',
  }, {
    key: 12,
    name: 'John Brown jr.',
    age: 30,
    address: 'New York No. 3 Lake Park',
    children: [{
      key: 121,
      name: 'Jimmy Brown',
      age: 16,
      address: 'New York No. 3 Lake Park',
    }],
  }, {
    key: 13,
    name: 'Jim Green sr.',
    age: 72,
    address: 'London No. 1 Lake Park',
    children: [{
      key: 131,
      name: 'Jim Green',
      age: 42,
      address: 'London No. 2 Lake Park',
      children: [{
        key: 1311,
        name: 'Jim Green jr.',
        age: 25,
        address: 'London No. 3 Lake Park',
      }, {
        key: 1312,
        name: 'Jimmy Green sr.',
        age: 18,
        address: 'London No. 4 Lake Park',
      }],
    }],
  }],
}, {
  key: 2,
  name: 'Joe Black',
  age: 32,
  address: 'Sidney No. 1 Lake Park',
}];

const rowSelection = {
  onChange: (selectedRowKeys, selectedRows) => {
    console.log(`selectedRowKeys: ${selectedRowKeys}`, 'selectedRows: ', selectedRows);
  },
  onSelect: (record, selected, selectedRows) => {
    console.log(record, selected, selectedRows);
  },
  onSelectAll: (selected, selectedRows, changeRows) => {
    console.log(selected, selectedRows, changeRows);
  },
};

export default {
  data() {
    return {
      data,
      columns,
      rowSelection,
    }
  }
}
</script>
```