我在挑战实际反应组件的形式时遇到了挑战 . 当我尝试提交表单时,出现以下错误: error 'handleSubmit' is not defined
下面的文件...我是否在我的反应组件中正确构建此表单?知道为什么handleSubmit出错了吗?谢谢
import React from 'react';
import {Field, FieldArray, reduxForm} from 'redux-form'
import {connect} from 'react-redux';
import {bindActionCreators} from 'redux';
import * as inviteActions from '../../actions/inviteActions';
let renderEmailField = ({input, label, type, meta: {touched, error}}) =>
<div>
<label>{label}</label>
<div>
<input {...input} name="email" type="email"/>
{touched && error && <span>{error}</span>}
</div>
</div>
let renderEmails = ({fields, meta: {submitFailed, error}}) =>
<ul>
<li>
<button type="button" onClick={() => fields.push()}>Add Email</button>
</li>
{fields.map((email, index) =>
<li key={index}>
{index > 2 && <button
type="button"
title="Remove Email"
onClick={() => fields.remove(index)}
/>}
<Field
name={email}
component={renderEmailField}
label={`Email #${index + 1}`}
/>
</li>
)}
{submitFailed && error && <li className="error">{error}</li>}
</ul>
let EmailsForm = ({handleSubmit, pristine, reset, submitting}) =>
<form onSubmit={handleSubmit}>
<FieldArray name="emails" component={renderEmails} />
<div>
<button type="submit" disabled={submitting}>Submit</button>
<button type="button" disabled={pristine || submitting} onClick={reset}>
Clear Values
</button>
</div>
</form>
class InvitePage extends React.Component {
handleSubmit(data) {
console.log(data)
this.props.actions.createInvites(data);
}
render() {
return (
<div>
<h1>Invites</h1>
<EmailsForm onSubmit={handleSubmit}/>
</div>
);
}
}
EmailsForm = reduxForm({
form: 'emailsForm',
initialValues: {
emails: ['', '', '']
},
validate(values) {
const errors = {}
if (!values.emails || !values.emails.length) {
errors.emails = {_error: 'At least one email must be entered'}
}
else {
let emailsArrayErrors = []
values.emails.forEach((email, emailIndex) => {
const emailErrors = {}
if (email == null || !email.trim()) {
emailsArrayErrors[emailIndex] = 'Required'
}
})
if (emailsArrayErrors.length) {
errors.emails = emailsArrayErrors
}
}
return errors
}
})(EmailsForm)
const mapStateToProps = state => {
return {
currentUser: state.currentUser
};
};
function mapDispatchToProps(dispatch) {
return {
actions: bindActionCreators(inviteActions, dispatch)
};
}
export default connect(mapStateToProps, mapDispatchToProps)(InvitePage);
2 回答
你必须像这样显式地将回调函数传递给handleSubmit .
希望这可以帮助 . 快乐的编码!
您尚未提供onSubmit函数作为EmailsForm的支柱 . 您可以通过两种方式传递它:
或者您可以在调用
EmailsForm
时将onSubmit
作为道具传递在你的情况下,你必须这样写:
据我所知,如果您可以重复使用这些小组件
renderEmailField, renderEmails, EmailsForm
,那么您可以像现在一样将它们创建为单独的组件 .我建议,你不应该将EmailsForm与InvitePage类分开,因为随着需求的增长,你必须将所有道具从InvitePage传递给EmailsForm . 除了传递onSubmit函数之外,InvitePage目前不提供任何其他目的 .
希望它有效 .
如果不更改任何变量的值,请尝试使用 const 而不是 let .