NavLink ListItems not Applying activeClassName class when Clicked On – ReactJS React-Router MaterialUI

Hi everyone,

A bit of a hairy issue I ran into today that took a while to track down. I’m using React Router with Material UI to render a Drawer as a sidebar:

The issue was that some links were not applying the expected activeclass:

<ListItem button component={NavLink} to="/about" onClick={this.handleItemClick} className={classes.sidebarContentListItem} activeClassName={classes.active}>
	<ListItemIcon className={classes.sidebarText}>
		<Info />
	</ListItemIcon>
	<ListItemText primary={
		<Typography type="body2" className={classes.sidebarText}>
			About
		</Typography>
	} />
</ListItem>

After trawling through react-router I eventually found a post on github that mentioned a similar issue: https://github.com/ReactTraining/react-router/issues/4638

The solution turned out to be wrapping all relevant components with withrouter.

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