Hi, I've extends the Rainlab Blog plugin, adding and extra field to the post. "teaCups" This extra fields lives on a separated table (has october documentation recommends), and works great, (this a dumb($post) from Rainlab Post Component on the function listPosts) +hasOne: array:1 [▼ "teacups" => array:1 [▼ 0 => "Test\TeaCups\Models\teacups" ] ] but, when I try to sort the results by "teacups" I get this error:

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'teacups.teacups' in 'order clause' (SQL: select from rainlab_blog_posts where published is not null and published = 1 and published_at is not null and published_at < 2016-02-11 18:40:24 and (select count() from rainlab_blog_categories inner join rainlab_blog_posts_categories on rainlab_blog_categories.id = rainlab_blog_posts_categories.category_id where rainlab_blog_posts_categories.post_id = rainlab_blog_posts.id and id in (11)) >= 1 and post_type_id in (1) order by rank.stars desc limit 7 offset 0)

when I use this "extra field" on the front end, I just access to this using: $this->page[ 'post' ]->teacup->teacup and works fine... so, How can I sort the results using this extra field?

Thanks a lot.