将变量传递给React组件会给出“未知属性error”

我觉得超级简单!只是试图将字符串传递给另一个组件，但它无法识别该属性，因为它使用了字符串插值。

编辑

我相信这可能与升级redux-form有关，它改变了输入选择器。我使用的是React 15.3.1，我相信他们改变了输入的工作方式，这影响了Redux。(https://github.com/erikras/redux-form/issues/1249) .

import React, { Component } from 'react';
import { connect } from 'react-redux';
import * as actions from '../../actions';
import { reduxForm } from 'redux-form';
import errorListItem from '../error-list-item/index.js';
class Signup extends Component {
  handleFormSubmit(formProps) {
    this.props.signupUser(formProps);
  }
  renderAlert() {
    const errorObject = this.props.errorMessage;
    // single (connection/api) error
    if (errorObject === 'Network Error') {
      return (
        <div className="alert alert-danger">
          <errorListItem message="hello" />
        </div>
      );
    // error object from BE
    } else if (errorObject && typeof errorObject === 'object') {
      const keys = Object.keys(errorObject);
      debugger;
      if (keys.length === 0) return;
      return Object.keys(errorObject).map(field => {
        return errorObject[field].map(problem => {
          const message = `${field} ${field}`;
          return (
           <ul className="error-message-list">
              <errorListItem message={message} />
            </ul>
           );
        });
      });
    }
  }
  render() {
    const { handleSubmit, fields: { email, password, passwordConfirm, username }} = this.props;
    return (
      <div className="signup">
        <form onSubmit={handleSubmit(this.handleFormSubmit.bind(this))}>
          <fieldset className="form-group">
            <label>Username:</label>
            <input className="form-control" {...username} />
            {username.touched && username.error && <div className="error">{username.error}</div>}
          </fieldset>
          <fieldset className="form-group">
            <label>Email:</label>
            <input className="form-control" {...email} />
            {email.touched && email.error && <div className="error">{email.error}</div>}
          </fieldset>
          <fieldset className="form-group">
            <label>Password:</label>
            <input type="password" className="form-control" {...password} />
            {password.touched && password.error && <div className="error">{password.error}</div>}
          </fieldset>
          <fieldset className="form-group">
            <label>Confirm Password:</label>
            <input className="form-control" {...passwordConfirm} />
            {passwordConfirm.touched && passwordConfirm.error && <div className="error">{passwordConfirm.error}</div>}
          </fieldset>
          <button action="submit" className="btn btn-primary">Sign up</button>
        </form>
        {this.renderAlert()}
      </div>
    );
  }
}
function validate(formProps) {
  const errors = {};
  if (!formProps.email) {
    errors.email = 'Please enter an email';
  }
  if (!formProps.password) {
    errors.password = 'Please enter a password';
  }
  if (!formProps.passwordConfirm) {
    errors.passwordConfirm = 'Please enter a password confirmation';
  }
  if (!formProps.username) {
    errors.username = 'Please enter a username';
  }
  // Passwords match
  if (formProps.password !== formProps.passwordConfirm) {
    errors.password = 'Passwords must match';
  }
  return errors;
}
function mapStateToProps(state) {
  return { errorMessage: state.auth.errors };
}
export default reduxForm({
  form: 'signup',
  fields: ['email', 'password', 'passwordConfirm', 'username'],
  validate
}, mapStateToProps, actions)(Signup);

子组件:

import React from 'react';
require('./styles.scss');
const errorListItem = ({ message }) => {
  return (<li>{message}</li>)
}
export default errorListItem;

试图解决方案:

1. 传递不使用变量的属性

   <ul className="error-message-list">
     <errorListItem message={`${field}  ${problem}`} />
   </ul>
   

2. 使用ES6解构传递属性

   <ul className="error-message-list">
     <errorListItem message />
   </ul>
   

3. 使用旧的JS语法传递属性，不带' '。

     const message = "" + field + " " +  problem + "";
     return (
       <ul className="error-message-list">
         <errorListItem message={message} />
       </ul>
      );
   

4. 尝试让子组件渲染任何东西!

     const errorListItem = ({ message }) => {
       return <li>Help Me, Obi-Wan Kenobi. You're My Only Hope</li>
     }
   

参考文档:

https://facebook.github.io/react/warnings/unknown-prop.html

错误信息:

Warning: Unknown prop `message` on <errorListItem> tag. Remove this prop from the element.

预期行为:

1. 它应该能够传递一个字符串作为属性。如果我使用下面的代码，就可以了:

   <ul className="error-message-list">
     <errorListItem message='message' />
   </ul>
   

2. 如果它不渲染，错误信息不应该是"未知属性"，而是无效的属性值给定。

版本:

"react": "^0.14.3",
"react-redux": "^4.0.0",
"react-router": "^2.0.1",
"redux": "^3.0.4",
"redux-form": "^5.3.1",

import ErrorListItem from '../error-list-item/index.js';
// Rest of your code...
<ErrorListItem message={message} />