get_active_blog_for_user

Source code

function get_active_blog_for_user( $user_id ) {

	global $wpdb;

	$blogs = get_blogs_of_user( $user_id );

	if ( empty( $blogs ) )

		return null;



	if ( !is_multisite() )

		return $blogs[$wpdb->blogid];



	$primary_blog = get_user_meta( $user_id, 'primary_blog', true );

	$first_blog = current($blogs);

	if ( false !== $primary_blog ) {

		if ( ! isset( $blogs[ $primary_blog ] ) ) {

			update_user_meta( $user_id, 'primary_blog', $first_blog->userblog_id );

			$primary = get_blog_details( $first_blog->userblog_id );

		} else {

			$primary = get_blog_details( $primary_blog );

		}

	} else {

		//TODO Review this call to add_user_to_blog too - to get here the user must have a role on this blog?

		add_user_to_blog( $first_blog->userblog_id, $user_id, 'subscriber' );

		update_user_meta( $user_id, 'primary_blog', $first_blog->userblog_id );

		$primary = $first_blog;

	}



	if ( ( ! is_object( $primary ) ) || ( $primary->archived == 1 || $primary->spam == 1 || $primary->deleted == 1 ) ) {

		$blogs = get_blogs_of_user( $user_id, true ); // if a user's primary blog is shut down, check their other blogs.

		$ret = false;

		if ( is_array( $blogs ) && count( $blogs ) > 0 ) {

			foreach ( (array) $blogs as $blog_id => $blog ) {

				if ( $blog->site_id != $wpdb->siteid )

					continue;

				$details = get_blog_details( $blog_id );

				if ( is_object( $details ) && $details->archived == 0 && $details->spam == 0 && $details->deleted == 0 ) {

					$ret = $blog;

					if ( get_user_meta( $user_id , 'primary_blog', true ) != $blog_id )

						update_user_meta( $user_id, 'primary_blog', $blog_id );

					if ( !get_user_meta($user_id , 'source_domain', true) )

						update_user_meta( $user_id, 'source_domain', $blog->domain );

					break;

				}

			}

		} else {

			return null;

		}

		return $ret;

	} else {

		return $primary;

	}

}