Mercator\Mapping::make_primary PHP Method

    public function make_primary()
    {
        // Get current site details to update
        $site = $this->get_site();
        // Create a new mapping from the old canonical domain
        $mapping = self::create($site->blog_id, $site->domain, true);
        if (is_wp_error($mapping)) {
            return $mapping;
        }
        // Set the new home and siteurl etc to the current mapping
        update_blog_details($site->blog_id, array('domain' => $this->get_domain()));
        // These are just a visual update for the site admin
        $url = esc_url($this->get_domain());
        update_blog_option($site->blog_id, 'home', $url);
        update_blog_option($site->blog_id, 'siteurl', $url);
        // Remove current mapping
        $this->delete();
        /**
         * Fires after a mapping has set as primary.
         *
         * @param Mercator\Mapping $mapping The mapping object.
         */
        do_action('mercator.mapping.made_primary', $this);
        return true;
    }