Intelligent Searchform

Hi there,

i wrote an intelligent searchform, which is divided into categories.
Just a short overview of the workflow. For every keyword, which is
entered in the searchform the matches are checked. So we've got a rank
in a hash.

[key of entry, relevance match]

For example:
@hash = [123 => 5, 124 =>2, 125 => 5, 126 => 1, etc...]

I ordered the Hash "by relevance" simply by ordering by the hash values:
@hash.sort_by {|a,b| b})

@hash = [123 => 5, 125 => 5, 124 =>2, 126 => 1, etc...]

No I want to find my entries by the key values of the hash.

Thats not the problem:
@entries = Entry.find(@hash)
or
@entries = Entry.find(@hash.keys)

The problem is, that the entries are (by standard) ordered by ID and not
in order by the Hash-Keys I passed.
Is there a possibility to order by my "relevance system" (even if there
isn't a coloumn in the Entries-Table.

Thank you 'till now
Hans