module ActiveScaffold
  module Bridges
    module Paperclip
      module Lib
        module PaperclipBridgeHelpers
          mattr_accessor :thumbnail_style
          self.thumbnail_style = :thumbnail
        
          def self.generate_delete_helper(klass, field)
            klass.class_eval <<-EOF, __FILE__, __LINE__ + 1 unless klass.methods.include?("delete_#{field}=")
              attr_reader :delete_#{field}
        
              def delete_#{field}=(value)
                value = (value == "true") if String === value
                return unless value
        
                # passing nil to the file column causes the file to be deleted. Don't delete if we just uploaded a file!
                self.#{field} = nil unless self.#{field}.dirty?
              end
            EOF
          end
        end
      end
    end
  end
end
module ActiveScaffold
  module Bridges
    module Paperclip
      module Lib
        module PaperclipBridgeHelpers
          mattr_accessor :thumbnail_style
          self.thumbnail_style = :thumbnail
        
          def self.generate_delete_helper(klass, field)
            klass.class_eval <<-EOF, __FILE__, __LINE__ + 1 unless klass.instance_methods.include?("delete_#{field}=")
              attr_reader :delete_#{field}
        
              def delete_#{field}=(value)
                value = (value == "true") if String === value
                return unless value
        
                # passing nil to the file column causes the file to be deleted. Don't delete if we just uploaded a file!
                self.#{field} = nil unless self.#{field}.dirty?
              end
            EOF
          end
        end
      end
    end
  end
end

Check against instance methods rather than class methods before generating delete helpers.
Check against instance methods rather than class methods before generating delete helpers.
