nocobase/docs/en-US/development/client/ui-schema-designer/extending-schema-components.md
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feat: update docs (#996)
* feat: update docs

* feat: update docs

* fix: update docs

* Add files via upload

* Add files via upload

* Update the-first-app.md

* Update the-first-app.md

* Update v08-changelog.md

* feat: update docs

Co-authored-by: Zhou <zhou.working@gmail.com>
2022-10-31 22:41:24 +08:00

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# 扩展 Schema 组件
除了原生的 html 标签,开发也可以适配更多的自定义组件,用于丰富 Schema 组件库。
扩展组件时,常用的方法:
- [connect](https://react.formilyjs.org/api/shared/connect) 无侵入接入第三方组件,一般用于适配字段组件,和 [mapProps](https://react.formilyjs.org/api/shared/map-props)[、mapReadPretty](https://react.formilyjs.org/api/shared/map-read-pretty) 搭配使用
- [observer](https://react.formilyjs.org/api/shared/observer) 当组件内部使用了 observable 对象,而你希望组件响应 observable 对象的变化时
## 最简单的扩展
直接将现成的 React 组件注册进来。
```tsx
/**
* defaultShowCode: true
*/
import React from 'react';
import { SchemaComponent, SchemaComponentProvider } from '@nocobase/client';
const Hello = () => <h1>Hello, world!</h1>;
const schema = {
type: 'void',
name: 'hello',
'x-component': 'Hello',
};
export default () => {
return (
<SchemaComponentProvider components={{ Hello }}>
<SchemaComponent schema={schema} />
</SchemaComponentProvider>
);
};
```
## 通过 connect 接入第三方组件
```tsx
/**
* defaultShowCode: true
*/
import React from 'react';
import { Input } from 'antd'
import { connect, mapProps, mapReadPretty } from '@formily/react';
import { SchemaComponent, SchemaComponentProvider } from '@nocobase/client';
const ReadPretty = (props) => {
return <div>{props.value}</div>
};
const SingleText = connect(
Input,
mapProps((props, field) => {
return {
...props,
suffix: '后缀',
}
}),
mapReadPretty(ReadPretty),
);
const schema = {
type: 'object',
properties: {
t1: {
type: 'string',
default: 'hello t1',
'x-component': 'SingleText',
},
t2: {
type: 'string',
default: 'hello t2',
'x-component': 'SingleText',
'x-pattern': 'readPretty',
},
}
};
export default () => {
return (
<SchemaComponentProvider components={{ SingleText }}>
<SchemaComponent schema={schema} />
</SchemaComponentProvider>
);
};
```
## 使用 observer 响应数据
```tsx
/**
* defaultShowCode: true
*/
import React from 'react';
import { Input } from 'antd';
import { connect, observer, useForm } from '@formily/react';
import { SchemaComponent, SchemaComponentProvider } from '@nocobase/client';
const SingleText = connect(Input);
const UsedObserver = observer((props) => {
const form = useForm();
return <div>UsedObserver: {form.values.t1}</div>
});
const NotUsedObserver = (props) => {
const form = useForm();
return <div>NotUsedObserver: {form.values.t1}</div>
};
const schema = {
type: 'object',
properties: {
t1: {
type: 'string',
'x-component': 'SingleText',
},
t2: {
type: 'string',
'x-component': 'UsedObserver',
},
t3: {
type: 'string',
'x-component': 'NotUsedObserver',
},
}
};
const components = {
SingleText,
UsedObserver,
NotUsedObserver
};
export default () => {
return (
<SchemaComponentProvider components={components}>
<SchemaComponent schema={schema} />
</SchemaComponentProvider>
);
};
```
## 嵌套的 Schema
- `props.children` 嵌套,适用于 void 和 object 类型的 properties例子见 [void 和 object 类型 schema 的嵌套](#void-和-object-类型-schema-的嵌套)
- `<RecursionField />` 自定义嵌套,所有类型都适用,例子见 [array 类型 schema 的嵌套](#array-类型-schema-的嵌套)
注意:
- 除了 void 和 object 类型以外的 schema 的 `properties` 无法直接通过 `props.children` 渲染,但是可以使用 `<RecursionField />` 解决嵌套问题
- 仅 void 和 object 类型的 schema 可以与 onlyRenderProperties 使用
```tsx | pure
<RecursionField schema={schema} onlyRenderProperties />
```
### void 和 object 类型 schema 的嵌套
直接通过 props.children 就可以适配 properties 节点了
```tsx
/**
* defaultShowCode: true
*/
import React from 'react';
import { SchemaComponent, SchemaComponentProvider } from '@nocobase/client';
// Hello 组件适配了 children可以嵌套 properties 了
const Hello = (props) => <h1>Hello, {props.children}!</h1>;
const World = () => <span>world</span>;
const schema = {
type: 'object',
name: 'hello',
'x-component': 'Hello',
properties: {
world: {
type: 'string',
'x-component': 'World',
},
},
};
export default () => {
return (
<SchemaComponentProvider components={{ Hello, World }}>
<SchemaComponent schema={schema} />
</SchemaComponentProvider>
);
};
```
各类型 properties 渲染结果对比
```tsx
import React from 'react';
import { SchemaComponent, SchemaComponentProvider } from '@nocobase/client';
const Hello = (props) => <h1>Hello, {props.children}!</h1>;
const World = () => <span>world</span>;
const schema = {
type: 'object',
properties: {
title1: {
type: 'void',
'x-content': 'Void schema渲染 properties',
},
void: {
type: 'void',
name: 'hello',
'x-component': 'Hello',
properties: {
world: {
type: 'void',
'x-component': 'World',
},
},
},
title2: {
type: 'void',
'x-content': 'Object schema渲染 properties',
},
object: {
type: 'object',
name: 'hello',
'x-component': 'Hello',
properties: {
world: {
type: 'string',
'x-component': 'World',
},
},
},
title3: {
type: 'void',
'x-content': 'Array schema不渲染 properties',
},
array: {
type: 'array',
name: 'hello',
'x-component': 'Hello',
properties: {
world: {
type: 'string',
'x-component': 'World',
},
},
},
title4: {
type: 'void',
'x-content': 'String schema不渲染 properties',
},
string: {
type: 'string',
name: 'hello',
'x-component': 'Hello',
properties: {
world: {
type: 'string',
'x-component': 'World',
},
},
},
}
};
export default () => {
return (
<SchemaComponentProvider components={{ Hello, World }}>
<SchemaComponent schema={schema} />
</SchemaComponentProvider>
);
};
```
### array 类型 schema 的嵌套
可以通过 `<RecursionField />` 解决自定义嵌套问题
#### Array 元素是 string 或 number 时
```tsx
import React from 'react';
import { useFieldSchema, Schema, RecursionField, useField, observer, connect } from '@formily/react';
import { SchemaComponent, SchemaComponentProvider } from '@nocobase/client';
const useValueSchema = () => {
const schema = useFieldSchema();
return schema.reduceProperties((buf, s) => {
if (s['x-component'] === 'Value') {
return s;
}
return buf;
});
};
const ArrayList = observer((props) => {
const field = useField();
const schema = useValueSchema();
return (
<>
String Array
<ul>
{field.value?.map((item, index) => {
// 只有一个元素
return <RecursionField name={index} schema={schema} />
})}
</ul>
</>
);
});
const Value = connect((props) => {
return <li>value: {props.value}</li>
});
const schema = {
type: 'object',
properties: {
strArr: {
type: 'array',
default: [1, 2, 3],
'x-component': 'ArrayList',
properties: {
value: {
type: 'number',
'x-component': 'Value',
},
}
},
}
};
export default () => {
return (
<SchemaComponentProvider components={{ ArrayList, Value }}>
<SchemaComponent schema={schema} />
</SchemaComponentProvider>
);
};
```
#### Array 元素是 Object 时
```tsx
import React from 'react';
import { useFieldSchema, Schema, RecursionField, useField, observer, connect } from '@formily/react';
import { SchemaComponent, SchemaComponentProvider } from '@nocobase/client';
const ArrayList = observer((props) => {
const field = useField();
const schema = useFieldSchema();
// array 类型的 schema 无法 onlyRenderProperties需要转化为 object 类型
const objSchema = new Schema({
type: 'object',
properties: schema.properties,
});
return (
<ul>
{field.value?.map((item, index) => {
// array 元素是 object
return (
<RecursionField name={index} schema={objSchema} onlyRenderProperties />
)
})}
</ul>
);
});
const Value = connect((props) => {
return <li>value: {props.value}</li>
});
const schema = {
type: 'object',
properties: {
objArr: {
type: 'array',
default: [
{ value: 't1' },
{ value: 't2' },
{ value: 't3' },
],
'x-component': 'ArrayList',
properties: {
value: {
type: 'number',
'x-component': 'Value',
},
}
}
}
};
export default () => {
return (
<SchemaComponentProvider components={{ ArrayList, Value }}>
<SchemaComponent schema={schema} />
</SchemaComponentProvider>
);
};
```
#### Tree 结构数据
```tsx
import { ArrayField } from '@formily/core';
import { connect, ISchema, observer, RecursionField, useField, useFieldSchema } from '@formily/react';
import { SchemaComponent, SchemaComponentProvider } from '@nocobase/client';
import { Table, TableColumnType } from 'antd';
import React from 'react';
const ArrayTable = observer((props: any) => {
const { rowKey } = props;
const field = useField<ArrayField>();
const schema = useFieldSchema();
const columnSchemas = schema.reduceProperties((buf, s) => {
if (s['x-component'] === 'ArrayTable.Column') {
buf.push(s);
}
return buf;
}, []);
const columns = columnSchemas.map((s) => {
return {
render: (value, record) => {
return <RecursionField name={record.__path} schema={s} onlyRenderProperties />;
},
} as TableColumnType<any>;
});
return <Table rowKey={rowKey} columns={columns} dataSource={field.value} />;
});
const Value = connect((props) => {
return <li>value: {props.value}</li>;
});
const schema: ISchema = {
type: 'object',
properties: {
objArr: {
type: 'array',
default: [
{ __path: '0', id: 1, value: 't1' },
{
__path: '1',
id: 2,
value: 't2',
children: [
{
__path: '1.children.0',
id: 5,
value: 't5',
parentId: 2,
},
],
},
{
__path: '2',
id: 3,
value: 't3',
children: [
{
__path: '2.children.0',
id: 4,
value: 't4',
parentId: 3,
children: [
{
__path: '2.children.0.children.0',
id: 6,
value: 't6',
parentId: 4,
},
{
__path: '2.children.0.children.1',
id: 7,
value: 't7',
parentId: 4,
},
],
},
],
},
],
'x-component': 'ArrayTable',
'x-component-props': {
rowKey: 'id',
},
properties: {
c1: {
type: 'void',
'x-component': 'ArrayTable.Column',
properties: {
value: {
type: 'string',
'x-component': 'Value',
},
},
},
},
},
},
};
export default () => {
return (
<SchemaComponentProvider components={{ ArrayTable, Value }}>
<SchemaComponent schema={schema} />
</SchemaComponentProvider>
);
};
```