GravityView - Wrap entries in a custom CSS class containing the user role of entry creator

gravityview-entry-container-user-role.php

<?php

/**
 * Adds a CSS class for each user role.
 *
 * @param string $class The existing class.
 * @param \GV\Template_Context The context.
 *
 * @return string The modified class, which will be sanitized by {@see gravityview_sanitize_html_class()} after return.
 */
add_filter( 'gravityview/template/list/entry/class', function( $css_class = '', $gravityview ) {

	$entry = $gravityview->entry->as_entry();
	$user  = new WP_User( rgar( $entry, 'created_by' ) );

	// There was an error finding the user.
	if ( ! $user->exists() ) {
		return $css_class;
	}

	$extra_css_class = '';

	// Add a CSS class for each user role.
	foreach( $user->roles as $role ) {
		$extra_css_class .= ' gv-user-role-' . $role;
	}

	return $css_class . ' ' . $extra_css_class;
}, 10, 2 );