no-follow-no-index.php

/**
 * Add new tab in settings nav
 */
function buddydev_add_new_settings_subnav_item() {

	$parent_slug = bp_get_settings_slug();

	bp_core_new_subnav_item( array(
		'name'              => __( 'Search Engines', 'buddydev' ),
		'slug'              => 'search-engine',
		'parent_slug'       => $parent_slug,
		'parent_url'        => trailingslashit( bp_loggedin_user_domain() . $parent_slug ),
		'screen_function'   => 'buddydev_search_engine_settings_page',
		'show_in_admin_bar' => true,
	) );
}
add_action( 'bp_settings_setup_nav', 'buddydev_add_new_settings_subnav_item' );

/**
 * Callback screen function
 */
function buddydev_search_engine_settings_page() {
	add_action( 'bp_template_content', 'buddydev_render_search_engine_settings_page' );
	bp_core_load_template( 'members/single/plugin' );
}

/**
 * Render following user posts
 */
function buddydev_render_search_engine_settings_page() {

	$action    = trailingslashit( bp_loggedin_user_domain() . bp_get_settings_slug() . '/' . 'search-engine' );
	$no_index  = get_user_meta( get_current_user_id(), '_no_index', true );
	$no_follow = get_user_meta( get_current_user_id(), '_no_follow', true );

	?>
	<h6><?php _e( '*Enable or Disable your Profile to get indexed from Search Engines*.', 'buddydev' ) ?></h6>
	<form action="<?php echo $action?>" method="post"
	      class="standard-form" id="settings-form">

		<label for="no-index"><input type="checkbox" id="no-index"
		                             name="buddydev-no-index" <?php checked( 'noindex', $no_index )?>>&nbsp;<?php _e( 'No Index', 'buddydev' ); ?></label>
		<label for="no-follow"><input type="checkbox" id="no-follow"
		                              name="buddydev-no-follow" <?php checked( 'nofollow', $no_follow )?>>&nbsp;<?php _e( 'No Follow', 'buddydev' ); ?></label>
		<?php wp_nonce_field( 'search-engine-settings-save' ); ?>
		<div class="submit">
			<input type="submit" name="search-engine-settings-submit" value="Save Changes" id="submit" class="auto">
		</div>

	</form>

	<?php
}

/**
 * Save settings
 */
function buddydev_save_search_engine_settings() {

	if ( ! bp_is_settings_component() || ! bp_is_current_action( 'search-engine' ) || ! isset( $_POST['search-engine-settings-submit'] ) ) {
		return;
	}

	if ( ! wp_verify_nonce( '_wpnonce', 'search-engine-settings-save' ) ) {
		bp_core_add_message( __( 'Invalid action', 'buddydev' ), 'error' );
	}

	$no_index  = isset( $_POST['buddydev-no-index'] ) ? 'noindex' : '';
	$no_follow = isset( $_POST['buddydev-no-follow'] ) ? 'nofollow' : '';

	update_user_meta( get_current_user_id(), '_no_index', $no_index );
	update_user_meta( get_current_user_id(), '_no_follow', $no_follow );

	bp_core_add_message( __( 'Settings saved', 'buddydev' ), 'success' );
}
add_action( 'bp_actions', 'buddydev_save_search_engine_settings' );

/**
 * Inject meta into header
 */
function buddydev_inject_search_engine_meta() {

	if ( ! bp_is_user() ) {
		return;
	}

	$no_index  = get_user_meta( bp_displayed_user_id(), '_no_index', true );
	$no_follow = get_user_meta( bp_displayed_user_id(), '_no_follow', true );
	$meta      = array_filter( array( $no_index, $no_follow ) );
	$content   = join( ',', $meta );

	?>
	<meta name="robots" content="<?php echo $content ?>">
	<?php
}
add_action( 'wp_head', 'buddydev_inject_search_engine_meta' );