Serialized JSON object importation

Hi,

I would like to import a serialized object (from a JSON export) inside
my database.

It work fine if for instance I do:

l = Yea.create(:title => "foo bar")

=> #<Yea id: 3, title: "foo bar", created_at: "2010-07-05 21:44:54",
updated_at: "2010-07-05 21:44:54">

j = l.to_json

=> "{\"yea\":{\"created_at\":\"2010-07-05T21:44:54Z\",\"title\":\"foo
bar\",\"updated_at\":\"2010-07-05T21:44:54Z\",\"id\":3}}"

Yea.delete(3)

=> 1

a = ActiveSupport::JSON.decode(j)

=> {"yea"=>{"created_at"=>"2010-07-05T21:44:54Z", "title"=>"foo bar",
"updated_at"=>"2010-07-05T21:44:54Z", "id"=>3}}

Yea.create(a.values)

=> [#<Yea id: 4, title: "foo bar", created_at: "2010-07-05 21:44:54",
updated_at: "2010-07-05 21:44:54">]

But I think this way is not good, because I would like to write this
importation a little bit more generic, for Yea serialized instances or
any other one. Is there a way to clean up this with ActiveRecord, for
example?

Many thanks.