amis/docs/zh-CN/components/form/treeselect.md

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---
title: TreeSelect 树形选择器
description:
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type: 0
group: null
menuName: TreeSelect 树形选择器
icon:
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order: 60
---
## 基本使用
```schema: scope="body"
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{
"type": "form",
"api": "/api/mock2/form/saveForm",
"body": [
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{
"type": "tree-select",
"name": "tree",
"label": "Tree",
"searchable": true,
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"options": [
{
"label": "Folder A",
"value": 1,
"children": [
{
"label": "file A",
"value": 2
},
{
"label": "file B",
"value": 3
}
]
},
{
"label": "file C",
"value": 4
},
{
"label": "file D",
"value": 5
},
{
"label": "Folder E",
"children": [
{
"label": "Folder G",
"children": [
{
"label": "file H",
"value": 6
},
{
"label": "file I",
"value": 7
}
]
}
]
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}
]
}
]
}
```
## 仅展示选中节点文本信息
设置`hideNodePathLabel: true`可以隐藏选择框中已选择节点的祖先节点ancestor的`labelField`字段值,仅展示当前选中节点的`labelField`字段值。
```schema: scope="body"
{
"type": "form",
"api": "/api/mock2/form/saveForm",
"body": [
{
"type": "tree-select",
"name": "tree1",
"label": "展示已选择节点的祖先节点的文本信息",
"value": "1,6,7",
"multiple": true,
"options": [
{
"label": "Folder A",
"value": 1,
"children": [
{
"label": "file A",
"value": 2
},
{
"label": "file B",
"value": 3
}
]
},
{
"label": "file C",
"value": 4
},
{
"label": "file D",
"value": 5
},
{
"label": "Folder E",
"children": [
{
"label": "Folder G",
"children": [
{
"label": "file H",
"value": 6
},
{
"label": "file I",
"value": 7
}
]
}
]
}
]
},
{
"type": "divider"
},
{
"type": "tree-select",
"name": "tree2",
"label": "仅展示已选择节点的文本信息",
"value": "1,6,7",
"multiple": true,
"hideNodePathLabel": true,
"options": [
{
"label": "Folder A",
"value": 1,
"children": [
{
"label": "file A",
"value": 2
},
{
"label": "file B",
"value": 3
}
]
},
{
"label": "file C",
"value": 4
},
{
"label": "file D",
"value": 5
},
{
"label": "Folder E",
"children": [
{
"label": "Folder G",
"children": [
{
"label": "file H",
"value": 6
},
{
"label": "file I",
"value": 7
}
]
}
]
}
]
}
]
}
```
## 只允许选择叶子节点
> 1.8.0 及以上版本
在单选时,可通过 `onlyLeaf` 可以配置只允许选择叶子节点
```schema: scope="body"
{
"type": "form",
"api": "/api/mock2/form/saveForm",
"body": [
{
"type": "tree-select",
"name": "tree",
"label": "Tree",
"onlyLeaf": true,
"searchable": true,
"options": [
{
"label": "Folder A",
"value": 1,
"children": [
{
"label": "file A",
"value": 2
},
{
"label": "file B",
"value": 3
}
]
},
{
"label": "file C",
"value": 4
},
{
"label": "file D",
"value": 5
},
{
"label": "Folder E",
"value": "61",
"children": [
{
"label": "Folder G",
"value": "62",
"children": [
{
"label": "file H",
"value": 6
},
{
"label": "file I",
"value": 7
}
]
}
]
}
]
}
]
}
```
## 如何让某些节点无法点?
只需要对应的节点没有 value 就行,比如下面例子的目录节点都无法点,只能点文件节点
```schema: scope="body"
{
"type": "form",
"api": "/api/mock2/form/saveForm",
"body": [
{
"type": "tree-select",
"name": "tree",
"label": "Tree",
"searchable": true,
"options": [
{
"label": "Folder A",
"children": [
{
"label": "file A",
"value": 2
},
{
"label": "file B",
"value": 3
}
]
},
{
"label": "Folder E",
"children": [
{
"label": "Folder G",
"children": [
{
"label": "file H",
"value": 6
},
{
"label": "file I",
"value": 7
}
]
}
]
}
]
}
]
}
```
## 属性表
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更多用法,见 [InputTree](./input-tree)
| 属性名 | 类型 | 默认值 | 说明 |
| ----------------- | --------- | ------- | ------------------------------------------- |
| hideNodePathLabel | `boolean` | `false` | 是否隐藏选择框中已选择节点的路径 label 信息 |
| onlyLeaf | `boolean` | `false` | 只运行选择叶子节点 |
## 事件表
| 事件名称 | 事件参数 | 说明 |
| ------------ | ------------------------------------------------ | -------------- |
| change | `value: string` 更新后的数据 | 选中值更改 |
| add | `options: Option[]`,`value: Option` 新增节点信息 | 新增选项 |
| edit | `options: Option[]`,`value: Option` 编辑节点信息 | 编辑选项 |
| delete | `options: Option[]`,`value: Option` 删除节点信息 | 删除选项 |
| loadFinished | value: `json` 懒加载返回的数据 | 懒加载完成触发 |
| blur | - | 输入框失去焦点 |
| focus | - | 输入框获取焦点 |
## 动作表
| 动作名称 | 动作配置 | 说明 |
| -------- | ------------------------ | ------------------------------------------------------ |
| clear | - | 清空 |
| reset | - | 将值重置为`resetValue`,若没有配置`resetValue`,则清空 |
| setValue | `value: string` 更新的值 | 更新数据,开启`multiple`,多值用`,`分隔 |