feat: add async-data-provider component (#151)

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chenos 2022-01-13 14:25:42 +08:00 committed by GitHub
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import React, { createContext, useContext } from 'react';
import MockAdapter from 'axios-mock-adapter';
import { APIClient, APIClientProvider, compose, AsyncDataProvider, useAsyncData } from '@nocobase/client';
const apiClient = new APIClient();
const mock = new MockAdapter(apiClient.axios);
mock.onGet('/users/1').reply(200, {
data: { id: 1, name: 'John Smith' },
});
const providers = [
[APIClientProvider, { apiClient }],
[AsyncDataProvider, { request: { url: '/users/1' } }],
];
export default compose(...providers)(() => {
const { data } = useAsyncData();
console.log(data);
return <div>{data?.data?.name}</div>;
});

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import React from 'react';
import { Table } from 'antd';
import MockAdapter from 'axios-mock-adapter';
import { APIClientProvider, SchemaComponentProvider, SchemaComponent, useRequest, APIClient } from '@nocobase/client';
import { observer } from '@formily/react';
const apiClient = new APIClient();
const mock = new MockAdapter(apiClient.axios);
mock.onGet('/users').reply(200, {
data: [
{ id: 1, name: 'John Smith' },
{ id: 2, name: 'Mike' },
],
});
const TableView = (props) => {
const { request, ...others } = props;
const callback = () => props.dataSource || [];
const { data, loading } = useRequest(props.request || callback);
return <Table {...others} dataSource={data?.data} loading={loading} />;
};
export default () => {
return (
<APIClientProvider apiClient={apiClient}>
<SchemaComponentProvider components={{ TableView }}>
<SchemaComponent
schema={{
type: 'void',
name: 'tableView',
'x-component': 'TableView',
'x-component-props': {
request: { url: '/users' },
rowKey: 'id',
columns: [
{
title: 'Name',
dataIndex: 'name',
key: 'name',
},
],
},
}}
/>
</SchemaComponentProvider>
</APIClientProvider>
);
};

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import React from 'react';
import { Table } from 'antd';
import MockAdapter from 'axios-mock-adapter';
import {
APIClientProvider,
SchemaComponentProvider,
SchemaComponent,
useRequest,
APIClient,
AsyncDataProvider,
useAsyncData,
} from '@nocobase/client';
const apiClient = new APIClient();
const mock = new MockAdapter(apiClient.axios);
mock.onGet('/users').reply(200, {
data: [
{ id: 1, name: 'John Smith' },
{ id: 2, name: 'Mike' },
],
});
const TableView = (props) => {
const { data, loading } = useAsyncData();
return <Table {...props} dataSource={data?.data} loading={loading} />;
};
const AsyncDataTableView = (props) => {
const { request, ...others } = props;
return (
<AsyncDataProvider request={request}>
<TableView {...others} />
</AsyncDataProvider>
);
};
export default () => {
return (
<APIClientProvider apiClient={apiClient}>
<SchemaComponentProvider components={{ TableView, AsyncDataTableView, AsyncDataProvider }}>
<SchemaComponent
schema={{
properties: {
table1: {
type: 'void',
'x-decorator': 'AsyncDataProvider',
'x-decorator-props': {
request: { url: '/users' },
},
'x-component': 'TableView',
'x-component-props': {
rowKey: 'id',
columns: [
{
title: 'Name',
dataIndex: 'name',
key: 'name',
},
],
},
},
table2: {
type: 'void',
'x-component': 'AsyncDataTableView',
'x-component-props': {
request: { url: '/users' },
rowKey: 'id',
columns: [
{
title: 'Name',
dataIndex: 'name',
key: 'name',
},
],
},
},
},
}}
/>
</SchemaComponentProvider>
</APIClientProvider>
);
};

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---
nav:
path: /client
group:
path: /client
---
# AsyncDataProvider
利用 Formily 提供的 [Effect Hooks](https://core.formilyjs.org/zh-CN/api/entry/form-effect-hooks) 或 [x-reactions](https://react.formilyjs.org/zh-CN/api/shared/schema#schemareactions) 协议能一定程度的解决某些场景的异步数据源问题,但是如果只用来处理异步请求,并不会很好用,而且局限于 Formily 体系内。为了更灵活的处理异步请求的各种需求NocoBase 提供了非常好用的可配置化的 [useRequest()](api-client#userequest),用于配置各种异步请求。与此同时,又提供了 `<AsyncDataProvider/>` 组件,可以将请求结果共享给子组件,方便处理其他更复杂的需求。以平时最常见,但却可能非常复杂的表格为例。表格的使用场景有:
- TableView 只作为表格视图
- RowSelection 动态数据的勾选项
- TableField 表格字段
各自的 schema 可以这么表示:
```js
// 表格视图type 为 void无 default 默认值,无 field.value
// dataSource 直接写在组件的 props 里
{
type: 'void',
'x-component': 'TableView',
'x-component-props': {
columns: [
{
title: 'Name',
dataIndex: 'name',
key: 'name',
},
],
dataSource: [
{ id: 1, name: 'Name1' },
{ id: 2, name: 'Name2' },
],
},
}
// 单选(表格视图),类似于 Radio.Group 字段,可选项由表格视图提供
{
type: 'number',
'x-component': 'RowSelection',
'x-component-props': {
rowSelection: {
type: 'radio',
},
columns: [
{
title: 'Name',
dataIndex: 'name',
key: 'name',
},
],
dataSource: [
{ id: 1, name: 'Name1' },
{ id: 2, name: 'Name2' },
],
},
default: 1,
}
// 多选(表格视图),类似于 Checkbox.Group 字段,可选项由表格视图提供
{
type: 'array',
'x-component': 'RowSelection',
'x-component-props': {
rowSelection: {
type: 'checkbox',
},
columns: [
{
title: 'Name',
dataIndex: 'name',
key: 'name',
},
],
dataSource: [
{ id: 1, name: 'Name1' },
{ id: 2, name: 'Name2' },
],
},
default: [1],
}
// 表格字段数据由表单提供schema 层面可以配置默认值
// 与表格视图的方式不同dataSource 和 columns 不适合直接配置在 x-component-props 里,怎么处理先忽略。
{
type: 'array',
'x-component': 'TableField',
'x-component-props': {},
default: [
{ id: 1, name: 'Name1' },
{ id: 2, name: 'Name2' },
],
}
```
大多数实际应用中,表格视图的 dataSource 是异步获取的,可能也需要过滤和分页,这样一来直接在 x-component-props 里写 dataSource 并不合适。为了解决这个问题,可以给组件扩展一个 request 属性,用于请求远程数据,例子如下:
<code src="./demos/demo2.tsx"/>
上述例子的 `<TableView/>` 组件就是一个 React Component可以正常使用而不局限于 SchemaComponent 场景。更进一步,为了处理过滤表单、分页等问题,建议将 request 通过 `<AsyncDataProvider/>` 共享给 `<TableView/>` 组件。
```tsx | pure
const result = useRequest(props.request);
<AsyncDataProvider value={result}>
<TableView/>
</AsyncDataProvider>
```
或者直接将 request 交给 AsyncDataProvider
```tsx | pure
<AsyncDataProvider request={props.request}>
<TableView/>
</AsyncDataProvider>
```
`<AsyncDataProvider/>` 的子组件里就可以通过 `useAsyncData()` 来获取 result可用于处理过滤、分页等。
```ts
const { data, loading, params, run, refresh, parent } = useAsyncData();
```
转化为 Schema 时,可以将 AsyncDataProvider 放在 `x-decorator` 里,也可以将重新组合的 AsyncDataProvider + TableView放在 `x-component` 里。
<code src="./demos/demo3.tsx"/>
将 AsyncDataProvider 独立出来,放到 x-decorator 里的另一个好处,例子如下:
```tsx | pure
<CollectionProvider>
{/* 从 CollectionProvider 里获取资源请求参数,并将请求结果同时共享给 DesignableBar 和 TableView */}
<AsyncDataProvider>
<DesignableBar/>
<TableView>
<RecordProvider>
<CollectionFieldProvider>
{/* 从 CollectionFieldProvider 里获取关系资源请求参数,并将请求结果同时共享给子组件 */}
<AsyncDataProvider>
{/* 组件 */}
</AsyncDataProvider>
</CollectionFieldProvider>
</RecordProvider>
</TableView>
</AsyncDataProvider>
</CollectionProvider>
```
上面例子嵌套了两层 AsyncDataProvider在子 AsyncDataProvider 里,也可以获取到更上一级的请求结果,如:
```ts
const { parent } = useAsyncData();
parent.refresh();
```

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import React, { createContext, useContext } from 'react';
import { Result } from 'ahooks/lib/useRequest/src/types';
import { useRequest } from '../api-client';
export const AsyncDataContext = createContext<Result<any, any>>(null);
export interface AsyncDataProviderProps {
value?: any;
resource?: any;
request?: any;
action?: string;
defaultParams?: any;
}
export const AsyncDataProvider: React.FC<AsyncDataProviderProps> = (props) => {
const { value, request, resource, action, defaultParams, children } = props;
if (value) {
return <AsyncDataContext.Provider value={value}>{children}</AsyncDataContext.Provider>;
}
const callback = (params?: any) => resource[action]({ ...defaultParams, ...params });
const result = useRequest(request || callback);
return <AsyncDataContext.Provider value={result}>{children}</AsyncDataContext.Provider>;
};
export const useAsyncData = () => {
return useContext(AsyncDataContext);
};

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@ -22,3 +22,4 @@ export * from './dnd-context';
export * from './grid'; export * from './grid';
export * from './application'; export * from './application';
export * from './record-provider'; export * from './record-provider';
export * from './async-data-provider';