I’m trying to convert a string passed on the command-line into an
ActiveRecord class, so I can do something like this.
class SomeClass < ActiveRecord::Base end
This appears to work (better ways would be appreciated):
a="SomeClass" b=eval a b.find(:all)
However I would like to make sure this is an real class first, so I
tried this since class names are constants:
a="SomeClass" Modules.constants.include?( a )
but SomeClass will not show up if it has not been used yet. So I
a="SomeClass" begin b=eval a b.class # for at least one use rescue puts "error"; exit end
Now I want to find out if it is derived from ActiveRecord, but can’t
seem to figure out how. I looked at Modules#ancestors and
Module#nesting, but this does not seem to be the right thing. Any help
would be greatly appreciated.