【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
以上是 【共享单车】—— React后台管理系统开发手记：AntD Form基础组件 的全部内容， 来源链接： utcz.com/z/381862.html
