【共享单车】—— React后台管理系统开发手记:AntD Form基础组件
前言:以下内容基于React全家桶+AntD实战课程的学习实践过程记录。最终成果github地址:https://github.com/66Web/react-antd-manager,欢迎star。
一、使用Form组件开发登录页面
- pages->form->login.js:对应路由/admin/form/login
import React from 'react' import {Card, Form, Input, Button, message, Icon, Checkbox} from 'antd' const FormItem = Form.Item class FormLogin extends React.Component{ handleSubmit = () => { let userInfo = this.props.form.getFieldsValue(); this.props.form.validateFields((err, values) => { if(!err){ message.success(`${userInfo.userName} 恭喜你,您通过本次表单组件学习,当前密码为:${userInfo.userPwd}`) } }) } render(){ const { getFieldDecorator } = this.props.form; return ( <div> <Card title="登录行内表单"> <Form layout="inline"> <FormItem> <Input placeholder="请输入用户名"/> </FormItem> <FormItem> <Input placeholder="请输入密码"/> </FormItem> <FormItem> <Button type="primary">登录</Button> </FormItem> </Form> </Card> <Card title="登录水平表单" style={{marginTop:10}}> <Form layout="horizontal" style={{width:300}}> <FormItem> { getFieldDecorator('userName', { initialValue:'Elena', rules:[ { required: true, message:'用户名不能为空' }, { min:5, max:10, message: '长度不在范围内' }, { pattern: new RegExp('^\\w+$','g'), message: '用户名必须为字母或数字' } ] })( <Input prefix={<Icon type="user"/>} placeholder="请输入用户名"/> ) } </FormItem> <FormItem> { getFieldDecorator('userPwd', { initialValue:'123456', rules:[ { required: true, message:'密码不能为空' }, { min:6, max:8, message: '长度不在范围内' } ] })( <Input prefix={<Icon type="lock"/>} type="password" placeholder="请输入密码"/> ) } </FormItem> <FormItem> { getFieldDecorator('remember', { valuePropName: 'checked', initialValue: true, })( <Checkbox>记住密码</Checkbox> ) } <a href="#" style={{float:'right'}}>忘记密码</a> </FormItem> <FormItem> <Button type="primary" onClick={this.handleSubmit}>登录</Button> </FormItem> </Form> </Card> </div> ) } } export default Form.create()(FormLogin);
- Form组件
- layout属性:表示表单布局 -- inline行内表单/horizontal水平表单
- getFieldDecorator属性:帮助进行初始化值,获取数据
- getFieldDecorator(‘表单里的一些对象’,定义的规则和值)(组件)
{ getFieldDecorator('userName', { initialValue:'Elena', rules:[ { required: true, message:'用户名不能为空' }, { min:5, max:10, message: '长度不在范围内' }, { pattern: new RegExp('^\\w+$','g'), message: '用户名必须为字母或数字' } ] })( <Input prefix={<Icon type="user"/>} placeholder="请输入用户名"/> ) }
需要在组件最下方添加 ↓:(经过
Form.create
包装的组件将会自带this.props.form
属性)export default Form.create()(FormLogin);
-
prefix属性:加前缀,使用Icon组件添加小图标
<Input prefix={<Icon type="user"/>} placeholder="请输入用户名"/>
-
指定表单的宽度
style={{width:300}}
- 设置记住密码框默认选中
{ getFieldDecorator('remember', { valuePropName: 'checked', initialValue: true, })( <Checkbox>记住密码</Checkbox> ) }
- options.rules校验规则
- required:是否必选
- min : 最小长度
- max : 最大长度
- len : 字段长度
- partten : 正则表达式
- type: 内建校验类型 类型选项
二、使用Form组件开发注册页面
- pages->form->register.js:对应路由/admin/form/reg
import React from 'react' import moment from 'moment' import {Card,Form,Input,Button,Checkbox,Radio,InputNumber,Select,Switch,DatePicker,TimePicker,Upload,Icon,message} from 'antd' const FormItem = Form.Item const RadioGroup = Radio.Group const Option = Select.Option; const TextArea = Input.TextArea class FormRegister extends React.Component { state = { loading: false, }; handleSubmit = () => { let userInfo = this.props.form.getFieldsValue(); console.log(JSON.stringify(userInfo)) message.success(`${userInfo.userName} 恭喜你,您通过本次表单组件学习,当前密码为:${userInfo.userPwd}`) } handleResetInfo = () => { this.props.form.resetFields(); } //模拟上传jpg -- 直接从官网复制过来即可 getBase64 = (img, callback) => { const reader = new FileReader(); reader.addEventListener('load', () => callback(reader.result)); reader.readAsDataURL(img); } handleChange = (info) => { if (info.file.status === 'uploading') { this.setState({ loading: true }); return; } if (info.file.status === 'done') { // Get this url from response in real world. this.getBase64(info.file.originFileObj, imageUrl => this.setState({ userImg: imageUrl, loading: false, })); } } render(){ const { getFieldDecorator } = this.props.form; const formItemLayout = { labelCol: { xs: 24, sm: 4 }, wrapperCol: { xs: 24, sm: 12 } } const offsetLayout = { wrapperCol: { xs: 24, sm: { span:12, offset:4 } } } const rowObject = { minRows: 4, maxRows: 6 } return ( <div> <Card title="注册表单"> <Form layout="horizontal"> <FormItem label="用户名" {...formItemLayout}> { getFieldDecorator('userName', { initialValue:'Elena', rules:[ { required: true, message:'用户名不能为空' } ] })( <Input placeholder="请输入用户名"/> ) } </FormItem> <FormItem label="密码" {...formItemLayout}> { getFieldDecorator('userPwd', { initialValue:'123456', rules:[ { required: true, message:'密码不能为空' } ] })( <Input type="password" placeholder="请输入密码"/> ) } </FormItem> <FormItem label="性别" {...formItemLayout}> { getFieldDecorator('sex', { initialValue:'1' })( <RadioGroup> <Radio value="1">女</Radio> <Radio value="2">男</Radio> </RadioGroup> ) } </FormItem> <FormItem label="年龄" {...formItemLayout}> { getFieldDecorator('age', { initialValue:'18' })( <InputNumber /> ) } </FormItem> <FormItem label="当前状态" {...formItemLayout}> { getFieldDecorator('state', { initialValue:'1' })( <Select> <Option value="1">咸鱼一条</Option> <Option value="2">人民公仆</Option> <Option value="3">浙传才女一枚</Option> <Option value="4">科技公司FE</Option> <Option value="5">创业者</Option> </Select> ) } </FormItem> <FormItem label="爱好" {...formItemLayout}> { getFieldDecorator('state', { initialValue:['1','3','5'] })( <Select mode="multiple"> <Option value="1">旅行</Option> <Option value="2">读书</Option> <Option value="3">剪辑</Option> <Option value="4">拍照</Option> <Option value="5">看电影</Option> </Select> ) } </FormItem> <FormItem label="是否已婚" {...formItemLayout}> { getFieldDecorator('isMarried', { valuePropName: 'checked', initialValue: true })( <Switch /> ) } </FormItem> <FormItem label="生日" {...formItemLayout}> { getFieldDecorator('birthday', { initialValue: moment('2019-1-1 11:14:59') })( <DatePicker showTime format="YYYY-MM-DD HH:mm:ss" /> ) } </FormItem> <FormItem label="联系地址" {...formItemLayout}> { getFieldDecorator('address',{ initialValue: '西虹市海淀区桃花公园' })( <TextArea autosize={rowObject} /> ) } </FormItem> <FormItem label="早起时间" {...formItemLayout}> { getFieldDecorator('time')( <TimePicker /> ) } </FormItem> <FormItem label="头像" {...formItemLayout}> { getFieldDecorator('userImg')( <Upload listType="picture-card" showUploadList={false} action="//jsonplaceholder.typicode.com/posts/" onChange={this.handleChange} > {this.state.userImg?<img src={this.state.userImg}/>:<Icon type="plus"/>} </Upload> ) } </FormItem> <FormItem {...offsetLayout}> { getFieldDecorator('imooc')( <Checkbox>我已阅读过<a href="#">慕课协议</a></Checkbox> ) } </FormItem> <FormItem {...offsetLayout}> <Button type="primary" onClick={this.handleSubmit}>提交</Button> <Button style={{marginLeft:10}} onClick={this.handleResetInfo}>重置</Button> </FormItem> </Form> </Card> </div> ) } } export default Form.create()(FormRegister);
- Form支持响应式尺寸
//Form组件内嵌的栅格布局 const formItemLayout = { labelCol: { xs: 24, sm: 4 }, wrapperCol: { xs: 24, sm: 12 } } //偏移布局 const offsetLayout = { wrapperCol: { xs: 24, sm: { span:12, offset:4 //向右偏移4列 } } }
-
数字框:
<InputNumber/>
-
时间类组件: DatePicker
value
类型为moment
对象,所以在提交服务器前需要预处理-
安装moment
yarn add moment --save
-
引用moment
import moment from "moment"; …… <FormItem label="生日" {...formItemLayout}> { getFieldDecorator('birthday', { initialValue: moment('2019-1-1 11:14:59') })( <DatePicker showTime format="YYYY-MM-DD HH:mm:ss" /> ) } </FormItem>
-
获取表单中Object对象
-
调用getFieldsValue方法:获取一组输入控件的值,如不传入参数,则获取全部组件的值
let userInfo = this.props.form.getFieldsValue();
-
重置表单内容:调用resetFields方法
this.props.form.resetFields()
-
注意:使用
getFieldsValue、
getFieldValue、
setFieldsValue
等时,需要确保对应的 field 已经用getFieldDecorator
注册过了 -
其它Api:官网文档
- 上传文件类组件:Upload
- action属性:上传的服务器地址
- listType属性:上传列表的内建样式
text/
picture/
picture-card
- showUploadList属性:是否展示上传列表内容 {false}↑ 或{true}↓
- onChange属性:上传文件状态改变的回调,详见 onChange
- 使用Upload组件必需的几个方法:
//模拟上传jpg -- 直接从官网复制过来即可 getBase64 = (img, callback) => { const reader = new FileReader(); reader.addEventListener('load', () => callback(reader.result)); reader.readAsDataURL(img); } handleChange = (info) => { if (info.file.status === 'uploading') { this.setState({ loading: true }); return; } if (info.file.status === 'done') { // Get this url from response in real world. this.getBase64(info.file.originFileObj, imageUrl => this.setState({ userImg: imageUrl, loading: false, })); } }
注:项目来自慕课网
越是迷茫、浮躁的时候,保持冷静和耐心,尤为重要