On Thu, Jul 8, 2010 at 7:49 PM, DSpaeth <[email protected]> wrote:

> Hello,
>
> ActiveRecord nows :join_table for has_and_belongs_to_many
> associations.
> Does DataMapper also provide a parameter like :join_table for
> anonymous resources?
>
> I haven't found anything about this.
>
> Hi Dieter,
in DataMapper I believe the equivalent syntax is:

 has n, :other_resource, :through => Resource   #anonymous

In this case DataMapper creates a join table on your behalf. It uses naming
conventions that wouldn't surprise
anyone used to those in ActiveRecord

'Resource' can be replaced by a join table of your own making also.

Just dug up: the cheat page for DataMapper:
http://cheat.errtheblog.com/s/datamapper/

Check under associations.

Also the main DM page has a mention here.
http://datamapper.org/docs/associations.html

Example code would be nice of course. I may be in a position to share some
of my own in a couple of days -
doing a project spike with DM that has a couple of many:many relationships.

-- 
http://richardconroy.blogspot.com

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