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20 | # File 'lib/active_scaffold/bridges/paperclip/paperclip_bridge_helpers.rb', line 8
def self.generate_delete_helper(klass, field)
  klass.class_eval <<-CODE, __FILE__, __LINE__ + 1 unless klass.method_defined?(:"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
  CODE
end |