close_enough.rb

  ZIP_CODE_RANGE = 10
  
  def close_enough(content)
    _close_enough = false
    zips_in_range = []
    for zip in Zip.all
      if self.zip_code and self.network_size and content.zip_code
        if (self.zip_code - zip.zip_code).abs < ZIP_CODE_RANGE + self.network_size
          zips_in_range << zip.zip_code
        end
      end
    end
    
    # sorts by difference
    zips_in_range.sort_by! do |zip|
      (self.zip_code - zip).abs
    end
    
    # removes the most different and searches for match
    for zip in zips_in_range.reverse.drop zips_in_range.size / 5
      if content.zip_code == zip
        _close_enough = true
      end
    end
    return _close_enough
  end