[Nitro] Dynamic finders having initializer, but collections have none

[Aleksi Niemela]

I wrote a patch to allow dynamic finder creators to have initializator 
as a block. So code could look like:

    u = User.find_or_create_by_name('tim') {|t| t.age = 13 }

But that didn't solve my problems yet. I'd like to see two improvements 
(was unable to provide patch for those right away).

1) Collections don't have any dynamic finders. It's not possible to write

  user.tags.find_by_name_and_status('foo', 'in use')

So this marvellous feature should be brought into collections as well!

2) Collections don't have dynamic finder creators. With new patch one 
can't still write

  Tags.find_or_create_by_user_oid_and_name_and_status(user.oid, 'foo', 
'in use') do |t|
    user.tags.add_tag t
  end

or perhaps this works but nothing more complicated probably not, as in 
the block the object isn't properly initialized yet.

I have to say I really like how Og is introducing nice features!

    - Aleksi