React函数式组件Demo

文件后缀

*.jsx

Demo

import React, {useEffect} from 'react';
import {
    Button,
    Page,
    Table,
    FilterPro, Message, Pagination, ConfirmButton, Dialog, Title, ProForm, Form, Placeholder, TitleCard
} from '@sto/cn-ui';

import {
    addCenter,
    deleteCenterById, modifyCenter,
    queryCenterPage,
    queryRegionList
} from "@/pages/ResourceAccess/CenterManage/service";
import DeptManage from "@/pages/ResourceAccess/CenterManage/DeptManage";


export default function CenterManage() {
    // React提供的一个性能优化Hook，主要用于在渲染过程中执行一些昂贵的计算，并且仅在依赖项发生变化时重新计算
    // 参数1：函数
    // 参数2：依赖项数组
    // 效果：当依赖项数组内值发生变化，重新执行函数计算结果
    // 查询表单
    const form = React.useMemo(() => {
        // 执行耗时操作并返回
        return FilterPro.createForm({
            initialValues: {
                regionName: '',
                centerName: '',
            },
            effects: () => {
            },
        });
    }, []);
    // State Hook让函数组件也可以有state状态, 并进行状态数据的读写操作
    // 语法: const [xxx, setXxx] = React.useState(initValue)
    // 数组中第一个参数，是后面的值，第二个参数是改变值的方法
    // 用法：setXxx((oldValue) => oldValue + 1)
    // 常量
    const [params, setParams] = React.useState(form.values);
    const [regionMetas, setRegionMetas] = React.useState([]);
    // 表格
    const [stateKey, setKeys] = React.useState({
        keys: [],
        record: [],
    });
    const [dataSource, setDataSource] = React.useState([]);
    const [currentPage, setCurrentPage] = React.useState(1);
    const [pageSize, setPageSize] = React.useState(5);
    const [pageTotal, setPageTotal] = React.useState(0);
    // 新增表单
    const [addVisible, setAddVisible] = React.useState(false);
    const addForm = React.useMemo(() => {
        return FilterPro.createForm({
            initialValues: {
                regionId: '',
                centerName: '',
            },
            effects: () => {
            },
        });
    }, []);
    const [addFormParams, setAddFormParams] = React.useState(addForm.values);
    // 编辑表单
    const [updVisible, setUpdVisible] = React.useState(false);
    const updForm = React.useMemo(() => {
        return FilterPro.createForm({
            initialValues: {
                id: null,
                regionId: '',
                centerName: '',
            },
            effects: () => {
            },
        });
    }, []);
    const [updFormParams, setUpdFormParams] = React.useState(updForm.values);

    // useEffect 允许你在组件渲染后执行副作用操作，像数据获取这种操作就属于副作用
    // 参数1：函数
    // 参数2：依赖项数组
    // 效果：当依赖项数组内值发生变化，重新执行副作用操作
    useEffect(() => {
        loadCenterPage(currentPage, pageSize, params).then();
    }, []);

    // 远程调用
    const loadCenterPage = async (currentPage, pageSize, queryParams) => {
        const args = {
            pageIndex: currentPage,
            pageSize: pageSize,
            requestModel: {
                regionName: queryParams?.regionName,
                centerName: queryParams?.centerName,
            }
        };
        const data = await queryCenterPage(args);
        const total = data.total;
        const records = data.records;
        setCurrentPage(currentPage);
        setPageSize(pageSize);
        setPageTotal(total);
        setDataSource(records)
    }

    // 远程调用
    const deleteCenter = async (id) => {
        await deleteCenterById({id: id}).then(data => {
            Message.success("操作成功");
            loadCenterPage(1, pageSize, params).then();
        });
    }

    // 远程调用
    const onAddCenterClick = async () => {
        const data = await queryRegionList();
        const options = [];
        for (let dataKey in data) {
            options.push({label: data[dataKey]?.regionName, value: data[dataKey]?.regionId});
        }
        setRegionMetas(options)
        addFormParams.regionId = '';
        addFormParams.centerName = '';
        setAddFormParams(addFormParams)
        setAddVisible(true);
    }

    // 远程调用
    const onUpdCenterClick = async (record) => {
        const data = await queryRegionList();
        const options = [];
        for (let dataKey in data) {
            options.push({label: data[dataKey]?.regionName, value: data[dataKey]?.regionId});
        }
        setRegionMetas(options)
        updFormParams.id = record.id;
        updFormParams.regionId = record.regionId;
        updFormParams.centerName = record.centerName;
        setUpdFormParams(updFormParams => updFormParams)
        setUpdVisible(true);
    }

    // 渲染的内容
    return (
        <Page>
            <TitleCard title="中心管理" hasGutter>
                <FilterPro
                    form={form}
                    cacheSearch
                    onSearch={setParams}
                    extendButtons={<>
                        <Button type={'primary'} onClick={onAddCenterClick}>新增</Button>
                    </>}
                    onChange={(values) => {
                        // console.log('changed values:', values);
                    }}
                    onReset={() => {
                        // Message.notice('onReset');
                        params.regionName = '';
                        params.centerName = '';
                        setParams(params);
                        loadCenterPage(1, pageSize, params).then();
                    }}
                    onSubmit={(values) => {
                        // console.log('submit values:', values);
                        // Message.notice('onSubmit');
                        loadCenterPage(1, pageSize, values).then();
                    }}
                />
                <Table
                    storageKey="centerManageId"
                    primaryKey="id"
                    columns={[
                        {title: '大区名称', dataIndex: 'regionName', width: 200},
                        {title: '大区编号', dataIndex: 'regionId', width: 200},
                        {title: '创建人', dataIndex: 'createUserName'},
                    ]}
                    rowSelection={{
                        type: 'single',
                        onChange(keys, record) {
                            console.log('keys', keys, 'rowSelection.onChange', record);
                            setKeys({keys, record});
                        },
                        selectedRowKeys: stateKey.keys,
                    }}
                    operateColumn={{
                        width: 200,
                        buttons: [
                            (record, index) => {
                                return (
                                    <>
                                        <Button type={'primary'} onClick={() => onUpdCenterClick(record)}
                                                text>编辑
                                        </Button>
                                        <ConfirmButton
                                            text
                                            type={'primary'}
                                            style={{marginLeft: 10}}
                                            btnContent="删除"
                                            dialogTitle="中心删除确认"
                                            dialogContent="确认删除当前中心?"
                                            successMsg={false}
                                            errorMsg={false}
                                            onConfirmSuccess={() => {
                                                deleteCenter(record.id).then();
                                            }}
                                        />
                                    </>
                                );
                            },
                        ],
                    }}
                    dataSource={dataSource}
                />
                <Pagination
                    currentPage={currentPage}
                    onChange={(value) => {
                        setCurrentPage(value)
                        loadCenterPage(value, pageSize, params).then();
                    }}
                    pageSize={pageSize}
                    onPageSizeChange={(value) => {
                        setPageSize(value)
                        loadCenterPage(1, value, params).then();
                    }}
                    totalCount={pageTotal}
                    pageSizeOptions={[5, 10, 15]}
                    showJump={false}
                />
                <Dialog
                    hasGutter
                    visible={addVisible}
                    title={'新增中心'}
                    closeMode={['close', 'mask', 'esc']}
                    size={'small'}
                    onClose={() => setAddVisible(false)}
                    onCancel={() => setAddVisible(false)}
                    footer={false}
                >
                    <Form
                        form={addForm}
                        onSubmit={(values) => {
                            // console.error('values', values);
                            addCenter(values).then(data => {
                                Message.success('操作成功');
                                setAddVisible(false);
                                loadCenterPage(1, pageSize, params).then();
                            });
                        }}
                        onReset={() => {
                            addFormParams.regionId = '';
                            addFormParams.centerName = '';
                            setAddFormParams(addFormParams);
                        }}
                        hasFooterSubmit
                        footerConfig={{mode: 'block'}}
                        formLayoutProps={{labelCol: {fixedSpan: 5}}}
                    >
                    </Form>
                </Dialog>
                <Dialog
                    hasGutter
                    visible={updVisible}
                    title={'编辑中心'}
                    closeMode={['close', 'mask', 'esc']}
                    size={'small'}
                    onClose={() => setUpdVisible(false)}
                    onCancel={() => setUpdVisible(false)}
                    footer={false}
                >
                    <Form
                        form={updForm}
                        onSubmit={(values) => {
                            console.error('values', values);
                            modifyCenter(values).then(data => {
                                Message.success('操作成功');
                                setUpdVisible(false);
                                loadCenterPage(1, pageSize, params).then();
                            });
                        }}
                        onReset={() => {
                            updFormParams.regionId = '';
                            updFormParams.centerName = '';
                            setUpdFormParams(updFormParams);
                        }}
                        hasFooterSubmit
                        footerConfig={{mode: 'block'}}
                        formLayoutProps={{labelCol: {fixedSpan: 5}}}
                    >
                    </Form>
                </Dialog>
            </TitleCard>
            <TitleCard title="部门管理" hasGutter>
                {/*'?.'表达式，判断stateKey内是否有属性record，没有属性，则整个调用链返回undefined*/}s
                <DeptManage {...stateKey?.record}/>
            </TitleCard>
        </Page>
    );
}

父子传值

import React from 'react';

export default function ParentDemo() {
    const [helloValue, setHelloValue] = React.useState('Hello World!');
    return <ChildDemo {...{name1: helloValue, name2: helloValue + 'hei hei!'}}/>;
}

import React, {useEffect} from 'react';

// 写法1
export default function ChildDemo(props) {
    useEffect(() => {
        // 当父组件传入的name1、name2值改变的时候，执行某些方法
        doSomething();
    }, [props.name1, props.name2]);
    return <h1>Hello, {props.name2}</h1>;
}

// 写法2：使用了解构函数
export default function ChildDemo({name1, name2}) {
    useEffect(() => {
        // 当父组件传入的name1、name2值改变的时候，执行某些方法
        doSomething();
    }, [name1, name2]);
    return <h1>Hello, {name2}</h1>;
}