class Pettanr.Sheet extends Peta.Root\r
+ url: '/sheets/'\r
+ \r
@singular: () ->\r
'Sheet'\r
\r
author_id: null\r
} \r
\r
+ author: () ->\r
+ new Pettanr.Author({id: @get('author_id')})\r
+ \r
is_visible: (operators) ->\r
switch super(operators)\r
when null\r