Widget calendar can link to 'No events found'

[stephenh1988]

If a widget calendar is selected to show past events, but the archives do not, then a link is generated on past events which points to a 'No events found' message.

Possible workarounds:

• Add 'event' class, but not a link (document this, and suggestions on styling). This may seem equally buggy.
• Add a message warning of this.

[stephenharris]

Possible workaround is hide past events on the 'events' page, but show them on the day/month/year archive pages.

/** 
 * Hooked ont to pre_get_posts
 * If a specific archive is viewed (either day, month or year archive)
 * then over-ride the showpastevents option.
 * @param WP_Query $query
 */
function myprefix_show_past_events_ondate( $query ){

    if( $query->is_main_query() && eventorganiser_is_event_query( $query ) ){

        if( eo_is_event_archive( 'day' ) || eo_is_event_archive( 'month' ) || eo_is_event_archive( 'year' ) ){
                $query->set( 'showpastevents', true );  
        }

    }   

}
add_action( 'pre_get_posts', 'myprefix_show_past_events_ondate', 5 );

Although this then shows past events even when the user has chosen not to, this is probably closes to what most people actually want...