amis2/docs/zh-CN/components/form/checkboxes.md

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---
title: Checkboxes 复选框
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description:
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type: 0
group: null
menuName: Checkboxes
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icon:
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order: 9
---
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用于实现多选。
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## 基本用法
```schema: scope="body"
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{
"type": "form",
"debug": true,
"api": "/api/mock2/form/saveForm",
"body": [
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{
"name": "checkboxes",
"type": "checkboxes",
"label": "复选框",
"options": [
{
"label": "OptionA",
"value": "a"
},
{
"label": "OptionB",
"value": "b"
},
{
"label": "OptionC",
"value": "c"
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},
{
"label": "OptionD",
"value": "d"
}
]
}
]
}
```
## 结果是数组模式
默认是拼接成字符串,如果希望结果是数组,可以设置 `"joinValues": false`
```schema: scope="body"
{
"type": "form",
"api": "/api/mock2/form/saveForm",
"debug": true,
"body": [
{
"name": "checkboxes",
"type": "checkboxes",
"label": "复选框",
"joinValues": false,
"options": [
{
"label": "OptionA",
"value": "a"
},
{
"label": "OptionB",
"value": "b"
},
{
"label": "OptionC",
"value": "c"
},
{
"label": "OptionD",
"value": "d"
}
]
}
]
}
```
如果只想提取 value需要加上 `"extractValue": true`
```schema: scope="body"
{
"type": "form",
"api": "/api/mock2/form/saveForm",
"debug": true,
"body": [
{
"name": "checkboxes",
"type": "checkboxes",
"label": "复选框",
"joinValues": false,
"extractValue": true,
"options": [
{
"label": "OptionA",
"value": "a"
},
{
"label": "OptionB",
"value": "b"
},
{
"label": "OptionC",
"value": "c"
},
{
"label": "OptionD",
"value": "d"
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}
]
}
]
}
```
## 显示全选
通过 `checkAll` 属性配置全选
```schema: scope="body"
{
"type": "form",
"api": "/api/mock2/form/saveForm",
"body": [
{
"name": "checkboxes",
"type": "checkboxes",
"label": "复选框",
"checkAll": true,
"options": [
{
"label": "OptionA",
"value": "a"
},
{
"label": "OptionB",
"value": "b"
},
{
"label": "OptionC",
"value": "c"
},
{
"label": "OptionD",
"value": "d"
}
]
}
]
}
```
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## 按钮模式
```schema: scope="body"
{
"type": "form",
"api": "/api/mock2/form/saveForm",
"body": [
{
"name": "checkboxes",
"type": "checkboxes",
"label": "复选框",
"optionType": "button",
"options": [
{
"label": "OptionA",
"value": "a"
},
{
"label": "OptionB",
"value": "b"
},
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{
"label": "OptionC",
"value": "c"
},
{
"label": "OptionD",
"value": "d"
}
]
}
]
}
```
## 按列显示
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设置 `"inline": false`
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```schema: scope="body"
{
"type": "form",
"api": "/api/mock2/form/saveForm",
"body": [
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{
"name": "checkboxes",
"type": "checkboxes",
"label": "复选框",
"inline": false,
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"options": [
{
"label": "OptionA",
"value": "a"
},
{
"label": "OptionB",
"value": "b"
},
{
"label": "OptionC",
"value": "c"
},
{
"label": "OptionD",
"value": "d"
}
]
}
]
}
```
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## 展示多行
可以配置`columnsCount`属性调整展示列的个数
```schema: scope="body"
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{
"type": "form",
"api": "/api/mock2/form/saveForm",
"body": [
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{
"name": "checkboxes1",
"type": "checkboxes",
"label": "默认的复选框",
"options": [
{
"label": "OptionA",
"value": "a"
},
{
"label": "OptionB",
"value": "b"
},
{
"label": "OptionC",
"value": "c"
},
{
"label": "OptionD",
"value": "d"
}
]
},
{
"type": "divider"
},
{
"name": "checkboxes2",
"type": "checkboxes",
"label": "显示两列的复选框",
"columnsCount": 2,
"inline": false,
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"options": [
{
"label": "OptionA",
"value": "a"
},
{
"label": "OptionB",
"value": "b"
},
{
"label": "OptionC",
"value": "c"
},
{
"label": "OptionD",
"value": "d"
}
]
}
]
}
```
> 1.8.0 及以上版本
`columnsCount` 还有一种数组形式,可以手动控制每行显示的列数
```schema: scope="body"
{
"type": "form",
"api": "/api/mock2/form/saveForm",
"body": [
{
"name": "checkboxes1",
"type": "checkboxes",
"label": "默认的复选框",
"columnsCount": [1, 2, 3],
"options": [
{
"label": "OptionA",
"value": "a"
},
{
"label": "OptionB",
"value": "b"
},
{
"label": "OptionC",
"value": "c"
},
{
"label": "OptionD",
"value": "d"
},
{
"label": "OptionE",
"value": "e"
},
{
"label": "OptionF",
"value": "f"
}
]
}
]
}
```
## 分组显示
`"inline": false` 下,选项中配置 `children` 字段可以实现分组展示效果。
```schema: scope="body"
{
"type": "form",
"mode": "horizontal",
"debug": true,
"body": [
{
"type": "checkboxes",
"name": "checkboxes",
"label": "城市选择",
"inline": false,
"checkAll": true,
"options": [
{
"label": "A类型",
"children": [
{
"label": "选项 A-1",
"value": "a-1"
},
{
"label": "选项 A-2",
"value": "a-2"
}
]
},
{
"label": "B类型",
"children": [
{
"label": "选项 B-1",
"value": "b-1"
},
{
"label": "选项 B-2",
"value": "b-2"
},
{
"label": "选项 B-3",
"value": "b-3"
},
{
"label": "选项 B-4",
"value": "b-4"
}
]
}
]
}
]
}
```
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## 自定义选项渲染
> 2.0.0 及以上版本
```schema: scope="body"
{
"type": "form",
"api": "/api/mock2/form/saveForm",
"body": [
{
"name": "checkboxes",
"type": "checkboxes",
"label": "复选框",
"menuTpl": "<span class='label label-${klass}'>${label}</span>",
"options": [
{
"label": "OptionA",
"value": "a",
"klass": "success"
},
{
"label": "OptionB",
"value": "b",
"klass": "danger"
},
{
"label": "OptionC",
"value": "c",
"klass": "warning"
},
{
"label": "OptionD",
"value": "d",
"klass": "info"
}
]
}
]
}
```
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## 属性表
当做选择器表单项使用时,除了支持 [普通表单项属性表](./formitem#%E5%B1%9E%E6%80%A7%E8%A1%A8) 中的配置以外,还支持下面一些配置
| 属性名 | 类型 | 默认值 | 说明 |
| --------------- | ----------------------------------------- | ------------ | ------------------------------------------------------------------------------------------------------------------- |
| options | `Array<object>`或`Array<string>` | | [选项组](./#%E9%9D%99%E6%80%81%E9%80%89%E9%A1%B9%E7%BB%84-options) |
| source | `string`或 [API](../../../docs/types/api) | | [动态选项组](./options#%E5%8A%A8%E6%80%81%E9%80%89%E9%A1%B9%E7%BB%84-source) |
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| delimiter | `string` | `,` | [拼接符](./options#%E6%8B%BC%E6%8E%A5%E7%AC%A6-delimiter) |
| labelField | `string` | `"label"` | [选项标签字段](./options#%E9%80%89%E9%A1%B9%E6%A0%87%E7%AD%BE%E5%AD%97%E6%AE%B5-labelfield) |
| valueField | `string` | `"value"` | [选项值字段](./options#%E9%80%89%E9%A1%B9%E5%80%BC%E5%AD%97%E6%AE%B5-valuefield) |
| joinValues | `boolean` | `true` | [拼接值](./options#%E6%8B%BC%E6%8E%A5%E5%80%BC-joinvalues) |
| extractValue | `boolean` | `false` | [提取值](./options#%E6%8F%90%E5%8F%96%E5%A4%9A%E9%80%89%E5%80%BC-extractvalue) |
| columnsCount | `number` | `1` | 选项按几列显示,默认为一列 |
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| menuTpl | `string` | | 支持自定义选项渲染 |
| checkAll | `boolean` | `false` | 是否支持全选 |
| inline | `boolean` | `true` | 是否显示为一行 |
| defaultCheckAll | `boolean` | `false` | 默认是否全选 |
| creatable | `boolean` | `false` | [新增选项](./options#%E5%89%8D%E7%AB%AF%E6%96%B0%E5%A2%9E-creatable) |
| createBtnLabel | `string` | `"新增选项"` | [新增选项](./options#%E6%96%B0%E5%A2%9E%E9%80%89%E9%A1%B9) |
| addControls | Array<[表单项](./formitem)> | | [自定义新增表单项](./options#%E8%87%AA%E5%AE%9A%E4%B9%89%E6%96%B0%E5%A2%9E%E8%A1%A8%E5%8D%95%E9%A1%B9-addcontrols) |
| addApi | [API](../../docs/types/api) | | [配置新增选项接口](./options#%E9%85%8D%E7%BD%AE%E6%96%B0%E5%A2%9E%E6%8E%A5%E5%8F%A3-addapi) |
| editable | `boolean` | `false` | [编辑选项](./options#%E5%89%8D%E7%AB%AF%E7%BC%96%E8%BE%91-editable) |
| editControls | Array<[表单项](./formitem)> | | [自定义编辑表单项](./options#%E8%87%AA%E5%AE%9A%E4%B9%89%E7%BC%96%E8%BE%91%E8%A1%A8%E5%8D%95%E9%A1%B9-editcontrols) |
| editApi | [API](../../docs/types/api) | | [配置编辑选项接口](./options#%E9%85%8D%E7%BD%AE%E7%BC%96%E8%BE%91%E6%8E%A5%E5%8F%A3-editapi) |
| removable | `boolean` | `false` | [删除选项](./options#%E5%88%A0%E9%99%A4%E9%80%89%E9%A1%B9) |
| deleteApi | [API](../../docs/types/api) | | [配置删除选项接口](./options#%E9%85%8D%E7%BD%AE%E5%88%A0%E9%99%A4%E6%8E%A5%E5%8F%A3-deleteapi) |
| optionType | `default` \| `button` | `default` | 按钮模式 |
| itemClassName | `string` | | 选项样式类名 |
| labelClassName | `string` | | 选项标签样式类名 |
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## 事件表
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当前组件会对外派发以下事件,可以通过`onEvent`来监听这些事件,并通过`actions`来配置执行的动作,在`actions`中可以通过`${事件参数名}`或`${event.data.[事件参数名]}`来获取事件产生的数据,详细请查看[事件动作](../../docs/concepts/event-action)。
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> `[name]`表示当前组件绑定的名称,即`name`属性,如果没有配置`name`属性,则通过`value`取值。
| 事件名称 | 事件参数 | 说明 |
| -------- | ----------------------- | ---------------- |
| change | `[name]: string` 选中值 | 选中值变化时触发 |
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## 动作表
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当前组件对外暴露以下特性动作,其他组件可以通过指定`actionType: 动作名称`、`componentId: 该组件id`来触发这些动作,动作配置可以通过`args: {动作配置项名称: xxx}`来配置具体的参数,详细请查看[事件动作](../../docs/concepts/event-action#触发其他组件的动作)。
| 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 |
| reload | - | 重新加载,调用 `source`,刷新数据域数据刷新(重新加载) |
| setValue | `value: string` 更新的值 | 更新数据,多个值用`,`分隔 |