Topic: merging fields

hello, is it possible to merge two fields in a table to act as one?

I have a product and version field in my database, I've need to search them independantly, and then combined.
I've tried

:group => "product and version" #this works, but not in the way that I want

I've tried using  :join, but I think thats or tables rather than just fields.

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Re: merging fields

Would it be easier to write a method on your model object like this?

def product_version
  product + " " + version
end