osem-fcy/app/models/datatable_supporters.rb

class DatatableSupporters < Datatable
  def data
    arr = []
    items.each do |i|
      item = []
      if i.name.blank?
        if !i.registration.nil? && !i.registration.user.nil?
          item << i.registration.user.name
        else
          item << 'Unknown'
        end

      else
        item << i.name
      end

      if i.email.blank?
        if !i.registration.nil? && !i.registration.user.nil?
          item << i.registration.user.email
        else
          item << 'Unknown'
        end

      else
        item << i.email
      end

      item << i.supporter_level.title
      item << i.code
      item << i.code_is_valid
      arr << item
    end

    arr
  end

  def columns
    ['name', 'email', 'name', 'name', 'name']
  end
end