[Rails] Getting model column names

Hello,

I am writing a RoR application that connects to a couchDB database using
couchrest_model.

The definition of my model is the following one:

class BdsDataAuthor < CouchRest::Model::Base
property :id, Integer
property :first_name, String
property :last_name, String
end


I would like to be able to get the list of the model columns, e.g., the
result of
BdsDataAuthor.columns would be [id, first_name, last_name]

Is it possible? I saw that active_record provides this kind of method
(column_names), but since I am not using active_record...

A solution that I tried is to create a method in the model class (it
works but its not the "best" solution...):

def getColumns
columns = Array.new
columns << "id"
columns << "first_name"
columns << "last_name"
end

Any idea/suggestion to solve this problem?

Thank you

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