facenovel/frontend/components/session/login_form_container.js

import { connect } from 'react-redux';
import React from 'react';
import { login } from '../../actions/session_actions';
import SessionForm from './session_form';

const mapStateToProps = state => ({
  errors: state.errors.session,
  currentUserId: state.session.currentUserId,
  loginInfo: {email: '', password: ''}
});

const mapDispatchToProps = dispatch => ({
  login: user => dispatch(login(user))
});

export default connect(mapStateToProps, mapDispatchToProps)(SessionForm);