[ActiveRecord] How to automatically bind, for example, :rows with Row or :user_id with User?


#1

Hello,

Imagine that I have the two following models :
class A < ActiveRecord::Base
belongs_to :b, :foreign => :fkey
end

class B < ActiveRecord::Base
end

Is it possible to retrieve both classes A and B and that column fkey
is pointing to table B ? In other words, if I give :a and :fkey, how
to obtain the class A and the fact that ‘fkey’ is a foreign key
pointing to table ‘B’ ?
I am almost sure that AR can do that, but this is not well-documented,
and source-code is a bit obsucated…

Thank you in advance,
Pierre L.


#2

On 25 Jan 2009, at 23:08, Pierre L wrote:

Is it possible to retrieve both classes A and B and that column fkey
is pointing to table B ? In other words, if I give :a and :fkey, how
to obtain the class A and the fact that ‘fkey’ is a foreign key
pointing to table ‘B’ ?

If you’re looking to introspect what associations have been setup then
you’d want to look at A.reflections.

Fred


#3

Thank you !