def save
obdata = {}
self.class.columns.each do |col|
- obdata[col.name.to_sym] = self.send(col.name.to_sym)
+ unless self.send(col.name.to_sym).nil? and !self.changed.include?(col.name)
+ obdata[col.name.to_sym] = self.send(col.name.to_sym)
+ end
end
obdata.delete :id
postdata = { self.class.to_s.underscore => obdata }