UpdatedSimpleForm.js

import React from 'react';
import { Field, reduxForm } from 'redux-form';


function validate(values) {
  const errors = {}
  if (!values.firstName) {
    errors.firstName = 'Required'
  }
  if (!values.lastName) {
    errors.lastName = 'Required'
  }
  if (!values.email) {
    errors.email = 'Required'
  }
  return errors
}

const renderField = ({
  input,
  label,
  type,
  meta: { touched, error }
}) => (
  <div>
    <label>{label}</label>
    <div>
      <input {...input} placeholder={label} type={type} />
        {touched && error && <span>{error}</span>}
    </div>
  </div>
)

const SimpleForm = props => {
  const { handleSubmit, pristine, reset, submitting } = props;
  return (
    <form onSubmit={handleSubmit}>
      <div>
        <label>First Name</label>
        <div>
          <Field
            name="firstName"
            component={renderField}
            type="text"
          />
        </div>
      </div>
      <div>
        <label>Last Name</label>
        <div>
          <Field
            name="lastName"
            component={renderField}
            type="text"
          />
        </div>
      </div>
      <div>
        <label>Email</label>
        <div>
          <Field
            name="email"
            component={renderField}
            type="email"
          />
        </div>
      </div>
      <div>
        <label>Sex</label>
        <div>
          <label>
            <Field name="sex" component="input" type="radio" value="male" />
            {' '}
            Male
          </label>
          <label>
            <Field name="sex" component="input" type="radio" value="female" />
            {' '}
            Female
          </label>
        </div>
      </div>
      <div>
        <label>Favorite Color</label>
        <div>
          <Field name="favoriteColor" component="select">
            <option />
            <option value="ff0000">Red</option>
            <option value="00ff00">Green</option>
            <option value="0000ff">Blue</option>
          </Field>
        </div>
      </div>
      <div>
        <label htmlFor="employed">Employed</label>
        <div>
          <Field
            name="employed"
            id="employed"
            component="input"
            type="checkbox"
          />
        </div>
      </div>
      <div>
        <label>Notes</label>
        <div>
          <Field name="notes" component="textarea" />
        </div>
      </div>
      <div>
        <button type="submit" disabled={pristine || submitting}>Submit</button>
        <button type="button" disabled={pristine || submitting} onClick={reset}>
          Clear Values
        </button>
      </div>
    </form>
  );
};

export default reduxForm({
  form: 'simple', // a unique identifier for this form
  validate 
})(SimpleForm);