Changing Output for FasterCSV - ruby-on-rails

Question

I currently have a controller that will handle a call to export a table into a CSV file using the FasterCSV gem. The problem is the information stored in the database isn't clear sometimes and so I want to change the output for a particular column.
My project.status column for instance has numbers instead of statuses ie 1 in the database corresponds to Active, 2 for Inactive and 0 for Not Yet decided. When I export the table it shows 0,1,2 instead of Active, Inactive or Not Yet decided. Any idea how to implement this?
I tried a simple loop that would check the final generated CSV file and change each 0,1,2 to its corresponding output, but the problem is every other column that had a 0,1,2 would change as well. I'm not sure how to isolate the column.
Thanks in advance
def csv
qt = params[:selection]
#lists = Project.find(:all, :order=> (params[:sort] + ' ' + params[:direction]), :conditions => ["name LIKE ? OR description LIKE ?", "%#{qt}%", "%#{qt}%"])
csv_string = FasterCSV.generate(:encoding => 'u') do |csv|
csv << ["Status","Name","Summary","Description","Creator","Comment","Contact Information","Created Date","Updated Date"]
#lists.each do |project|
csv << [project.status, project.name, project.summary, project.description, project.creator, project.statusreason, project.contactinfo, project.created_at, project.updated_at]
end
end
filename = Time.now.strftime("%Y%m%d") + ".csv"
send_data(csv_string,
:type => 'text/csv; charset=UTF-8; header=present',
:filename => filename)
end

Answer 1

This is actually fairly easy. In your controller code:
#app/controllers/projects_controller.rb#csv
#lists.each do |project|
csv << [project.descriptive_status, project.name, project.summary, project.description, project.creator, project.statusreason, project.contactinfo, project.created_at, project.updated_at]
end
Then in your model code. You probably already have a method that decodes the DB status to a more descriptive one though:
#app/models/project.rb
ACTIVE_STATUS = 0
INACTIVE_STATUS = 1
NOT_YET_DECIDED_STATUS = 2
def descriptive_status
case status
when ACTIVE_STATUS
"Active"
when INACTIVE_STATUS
"Inactive"
when NOT_YET_DECIDED_STATUS
"Not Yet Decided"
end
end
There are probably a number of ways you can then refactor this. In the controller at least, it would probably be best to make that finder a more descriptive named scope. The constants in the model could be brought into SettingsLogic configuration or another similar gem.