On Sun, Mar 6, 2011 at 4:17 PM, mohamed mosaad <[email protected]> wrote:
> I am not sure how foreign keys work here, i used belongs_to and
> has_many and created an extra attribute for the foreign key my
> question is how can i say this is the foreign key
If the schema follows AR naming conventions the FK is inferred.
For example, if post has many comments
has_many :comments, :dependent => :destroy
and a comment belongs to a post
belongs_to :post
and the FK in the comments table is called post_id, you're done. AR
will figure it out.
If the column is called something else there's an option to specify
which is the FK, but if you're defining a new schema it is better (and
expected) to just follow the conventions.
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