Limits the number of characters allowed in BuddyPress Group description

buddypress-limit-characters-in-group-description.php

// For Group creation.
add_action( 'groups_action_sort_creation_steps', function () {
	$allowed_length = 225; // how may characters are allowed?

	$step = wp_unslash( bp_action_variable( 1 ) );

	if ( empty( $_POST['save'] ) ) {
		return;
	}

	if ( 'group-details' !== $step || empty( $_POST['group-desc'] ) ) {
		return;
	}

	if ( mb_strlen( $_POST['group-desc'] ) > $allowed_length ) {
		bp_core_add_message( sprintf( 'Group description must be less than %d characters.', $allowed_length ), 'error' );
		bp_core_redirect( trailingslashit( bp_get_groups_directory_permalink() . 'create/step/' . $step ) );
	}

} );

// Group->Manage->Details update screen.
add_action( 'bp_screens', function () {

	$allowed_length = 225; // how may characters are allowed?

	if ( 'edit-details' !== bp_get_group_current_admin_tab() || ! bp_is_item_admin() ) {
		return false;
	}

	if ( empty( $_POST['group-desc'] ) ) {
		return;
	}


	if ( mb_strlen( $_POST['group-desc'] ) > $allowed_length ) {
		bp_core_add_message( sprintf( 'Group description must be less than %d characters.', $allowed_length ), 'error' );
		bp_core_redirect( bp_get_group_permalink( groups_get_current_group() ) . 'admin/edit-details/' );
	}
}, 8 );