react antd 动态表单

import React, { Component } from 'react';
import ReactDOM from 'react-dom';
import { Form, InputNumber, Input, DatePicker, Button, Select } from 'antd';
import moment from 'moment';
// 推荐在入口文件全局设置 locale
import 'moment/locale/zh-cn';
moment.locale('zh-cn');const FormItem = Form.Item;
const Option = Select.Option;// 后台返回的数据格式
const data = [
{
'field': 'jobid',
'text': '工号',
'errorMessage': '请输入工号',
'required': true,
'type': 'int',
'value': 100
},{
'field': 'date',
'text': '日期',
'errorMessage': '请输入日期',
'required': false,
'type': 'date',
'value': '2017-10-20'
},{
'field': 'username',
'text': '用户名',
'errorMessage': '请输入用户名',
'required': true,
'type': 'char',
'value': 'hello world'
},{
'field': 'customer',
'text': '客户',
'errorMessage': '请输入客户',
'required': true,
'type': 'select',
'value': '中兴',
'options': ['贝尔', '中兴', '烽火']
}
]// formItem css 样式
const formItemLayout = {
labelCol: {
xs: { span: 24 },
sm: { span: 6 },
},
wrapperCol: {
xs: { span: 24 },
sm: { span: 14 },
}
}// 保存按钮 css 样式
const tailFormItemLayout = {
wrapperCol: {
xs: {
span: 24,
offset: 0,
},
sm: {
span: 14,
offset: 6,
},
}
}// form css 样式
const formLayout = {
width: 400,
marginTop: 100,
marginLeft: 'auto',
marginRight: 'auto'
}class App extends Component {
handleSubmit(e) {
e.preventDefault();
this.props.form.validateFields((err, values) => {
if (!err) {
console.log('Received values of form: ', values);
}
});
} /**
* 根据后台返回的 data 中 type 类型生成不同的组件
* @param item json
* @param Component
*/
switchItem(item) {
const type = item.type;
switch (type) {
case 'int':
return <InputNumber style={{ width: '100%' }} />;
break;
case 'char':
return <Input />;
break;
case 'date':
return <DatePicker style={{ width: '100%' }} />;
break;
case 'select':
return (
<Select>
{
item.options.map((option, index) => {
return (<Option key={index} value={option}>{option}</Option>)
})
}
</Select>
)
default:
return <Input />;
break;
}
} render() {
const { getFieldDecorator } = this.props.form;
return (
<Form onSubmit={this.handleSubmit} style={formLayout}>
{
data.map((item, index) => {
// type 为 date 日期格式需要强制转化为 moment 格式
item.value = item.type == 'date' ? moment(item.value, 'YYYY-MM-DD') : item.value;
return (
<FormItem
key={index}
{...formItemLayout}
label={item.text}
hasFeedback
>
{getFieldDecorator(item.field, {
initialValue: item.value,
rules: [{
required: item.required,
message: item.errorMessage
}],
})(
this.switchItem(item)
)}
</FormItem>
)
})
}
<FormItem {...tailFormItemLayout}>
<Button type="primary" htmlType="submit">
保存
</Button>
</FormItem>
</Form>
)
}
}const AppForm = Form.create()(App);ReactDOM.render(<AppForm />, document.getElementById('root'));

Uncaught TypeError: Cannot read property 'props' of undefined
at handleSubmit (http://localhost:8088/js/app.js:78431:17)
at HTMLUnknownElement.callCallback (http://localhost:8088/js/app.js:59422:14)
at Object.invokeGuardedCallbackDev (http://localhost:8088/js/app.js:59461:16)
at Object.invokeGuardedCallback (http://localhost:8088/js/app.js:59318:27)
at Object.invokeGuardedCallbackAndCatchFirstError (http://localhost:8088/js/app.js:59332:43)
at executeDispatch (http://localhost:8088/js/app.js:59716:19)
at executeDispatchesInOrder (http://localhost:8088/js/app.js:59738:5)
at executeDispatchesAndRelease (http://localhost:8088/js/app.js:59836:5)
at executeDispatchesAndReleaseTopLevel (http://localhost:8088/js/app.js:59847:10)
at Array.forEach (native)

constructor(props) {
super(props);
this.handleSubmit = this.handleSubmit.bind(this);
}