Rails - Mar 2008 - How: obj-class-A = A.new(obj-class-B) ? suppose class A is subset of class B

RT~
I mean create an object a-A by another object b-B.
a-A is object of class A, b-B is object of class B.
suppose A is ''subset'' of B, em, I mean, all the attributes A
have, you
can find attributes with the same name in B.
How can I gain this? re-write the ''new'' method in A? or just
define
another method create_via_B(b-B)? so how ?
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I''m not sure if I fully understand what you''re trying to
describe but
it sounds like you want to look into Single Table Inheritance (STI).

On Mar 18, 2:06 am, hei <cy...-KN7UnAbNpbg@public.gmane.org>
wrote:
> RT~
> I mean create an object a-A by another object b-B.
> a-A is object of class A, b-B is object of class B.
> suppose A is ''subset'' of B, em, I mean, all the
attributes A have, you
> can find attributes with the same name in B.
> How can I gain this? re-write the ''new'' method in A? or
just define
> another method create_via_B(b-B)? so how ?
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