Ruby on Rails: Dynamically choose a class to search from.

Question

How do i have a variable such that sometime I can do

Foo.find(id)

or sometimes

Bar.find(id)

there not constants so .constantize won't work =\

Answer 1

klass = Foo # This could easily be in some kind of conditional statement
klass.find(...)

and of course Foo and Bar in your example are constants, so you could easily also do

"Foo".constantize.find(...)