Added reloadable attributes support

Cool.

Am I missing something?

Doesn't this work already?

object.reload(options)

actually does

def reload(options = nil)
        clear_aggregation_cache
        clear_association_cache
        @attributes.update(self.class.find(self.id, options).instance_variable_get('@attributes'))
        @attributes_cache = {}
        self
      end

so object.reload(:select => "name")

will already just reload the "name" attribute

here's a working example

>> Event.create(:name => "first name", :description => "first description")
=> #<Event id: 1, name: "first name", description: "first description">

>> e1 = Event.find(1)
=> #<Event id: 1, name: "first name", description: "first description">
>> e2 = Event.find(1)
=> #<Event id: 1, name: "first name", description: "first description">

>> e1.name
=> "first name"
>> e1.description
=> "first description"

>> e2.update_attributes(:name => "second name", :description => "second description")
=> true
>> e2
=> #<Event id: 1, name: "second name", description: "second description">

>> e1.reload(:select => "name")
=> #<Event id: 1, name: "second name", description: "first description">
>> e1.name
=> "second name"
>> e1.description
=> "first description"

>> e1.reload
=> #<Event id: 1, name: "second name", description: "second description">
>> e1.name
=> "second name"
>> e1.description
=> "second description"

so it seems this functionality already exists.

Good point, Matthew.