mongoid/mongoid — pull request #2453 by camallen (2012-10-09 14:18:57+00:00)
Title: allow write_attribute to work with an aliased field name

Using field aliasing, write_attribute does not work using alias name

Similar to this [prev issue](https://github.com/mongoid/mongoid/issues/2353) but this time for [attributes.rb#write_attribute](https://github.com/mongoid/mongoid/blob/master/lib/mongoid/attributes.rb#L121).