gab-social/app/javascript/gabsocial/pages/group_page.js

import React from 'react';
import { connect } from 'react-redux';
import { PropTypes } from 'prop-types';
import ImmutablePropTypes from 'react-immutable-proptypes';
import ImmutablePureComponent from 'react-immutable-pure-component';
import WhoToFollowPanel from '../features/ui/components/who_to_follow_panel';
import LinkFooter from '../features/ui/components/link_footer';
import PromoPanel from '../features/ui/components/promo_panel';
import HeaderContainer from '../features/groups/timeline/containers/header_container';
import GroupPanel from '../features/groups/timeline/components/panel';
import { fetchGroup } from '../actions/groups';
import GroupSidebarPanel from '../features/groups/sidebar_panel';

const mapStateToProps = (state, { params: { id } }) => ({
	group: state.getIn(['groups', id]),
	relationships: state.getIn(['group_relationships', id]),
});

export default @connect(mapStateToProps)
class GroupPage extends ImmutablePureComponent {

    static propTypes = {
        group: ImmutablePropTypes.map,
		relationships: ImmutablePropTypes.map,
		dispatch: PropTypes.func.isRequired,
	};
	
	componentWillMount() {
		const { params: { id }, dispatch } = this.props;

		dispatch(fetchGroup(id));
	}

	render () {
		const { children, group, relationships } = this.props;

		return (
			<div className='page group'>
				{group && <HeaderContainer groupId={group.get('id')} />}
				
				<div className='page__columns'>
					<div className='columns-area__panels'>
						<div className='columns-area__panels__pane columns-area__panels__pane--left'>
							<div className='columns-area__panels__pane__inner'>
								{group && relationships &&
									<GroupPanel 
										group={group}
										relationships={relationships}
									/>}
									
									<PromoPanel />
									<LinkFooter />
							</div>
						</div>
						
						<div className='columns-area__panels__main'>
							<div className='columns-area columns-area--mobile'>
								{children}
							</div>
						</div>
						
						<div className='columns-area__panels__pane columns-area__panels__pane--right'>
							<div className='columns-area__panels__pane__inner'>
								<GroupSidebarPanel />
								<WhoToFollowPanel />
							</div>
						</div>
					</div>
				</div>
			</div>
		)
	}
}