public function usePreviewTables($bEnabled)
    {
        if (!empty($bEnabled)) {

            $this->isPreviewMode = true;

            $this->table      = NAILS_DB_PREFIX . 'blog_post_preview';
            $this->tableAlias = 'bp';

            $this->tableCat       = NAILS_DB_PREFIX . 'blog_post_preview_category';
            $this->tableCatPrefix = 'bpc';

            $this->tableTag       = NAILS_DB_PREFIX . 'blog_post_preview_tag';
            $this->tableTagPrefix = 'bpt';

            $this->tableImg       = NAILS_DB_PREFIX . 'blog_post_preview_image';
            $this->tableImgPrefix = 'bpi';

        } else {

            $this->isPreviewMode = false;

            $this->table      = NAILS_DB_PREFIX . 'blog_post';
            $this->tableAlias = 'bp';

            $this->tableCat       = NAILS_DB_PREFIX . 'blog_post_category';
            $this->tableCatPrefix = 'bpc';

            $this->tableTag       = NAILS_DB_PREFIX . 'blog_post_tag';
            $this->tableTagPrefix = 'bpt';

            $this->tableImg       = NAILS_DB_PREFIX . 'blog_post_image';
            $this->tableImgPrefix = 'bpi';
        }
    }