AddEventForm.js

import { Button, Form, Icon, Input, Modal } from 'semantic-ui-react';
import React, { Component } from 'react';
import { addEvent, eventDate, writeEvent } from '../../actions/statistics';

import { DateTimeInput } from 'semantic-ui-calendar-react';
import { clearWrite } from '../../actions/news';
import { connect } from 'react-redux';

class AddEventForm extends Component {
  constructor(props) {
    super(props);
    this.state = {
      showModal: false,
      date: '',
    };
  }

  // Handling change in redux action creator throws an exception
  // Temporal solotion using the components state to display, instead redux state
  handleChange = (event, { name, value }) => {
    if (this.state.hasOwnProperty(name)) {
      this.setState({ [name]: value });
    }
    this.props.eventDate(name, value);
  };

  render() {
    const { name, description } = this.props.newEvent;
    return (
      <Modal
        open={this.state.showModal}
        trigger={
          <Button
            size="big"
            onClick={() => {
              this.setState({ showModal: true });
            }}
          >
            Alkalom hozzáadása
          </Button>
        }
      >
        <Modal.Header>Új alkalom:</Modal.Header>
        <Modal.Content
          style={{
            paddingTop: '20px',
          }}
        >
          <Form>
            <Form.Field
              control={Input}
              label="Név"
              name="name"
              onChange={(e) => this.props.writeEvent(e)}
              value={name}
              style={{
                marginBottom: '20px',
              }}
              placeholder="Title"
            />
            <Form.TextArea
              name="description"
              label="Leírás:"
              placeholder="Rövid leírás"
              value={description}
              onChange={(e) => this.props.writeEvent(e)}
            />
            <DateTimeInput
              name="date"
              label="Dátum:"