DataMapper: Putting a model into a model

In t开发者_C百科he DataMapper documentation for associations I found an example where they put a model into a model like...

 1 class Person
 2 
 3   class Link
 4 
 5     include DataMapper::Resource
 6 
 7     storage_names[:default] = 'people_links'
 8 
 9     # the person who is following someone
10     belongs_to :follower, 'Person', :key => true
11 
12     # the person who is followed by someone
13     belongs_to :followed, 'Person', :key => true
14 
15   end
16 
17   include DataMapper::Resource
18 
19   property :id,   Serial
20   property :name, String, :required => true
21   ...

Does it have any influence on the result you get back or is it just another notation or format?

Thanks in advance, rufus

No, it doesn't have any influence on the result.

If you put your models in a namespace it will reflect in storage names though. That's why in the example above you see "storage_names[:default] = 'people_links'" in Link model, because that model is inside Person namespace, which is reflected in "people_links" table name.