Module: Medic::Anchor

Included in:
AnchoredObjectQueryBuilder, StatisticsCollectionQueryBuilder
Defined in:
lib/medic/anchor.rb

Constant Summary collapse

NUMBER_WORDS = 
{
  'zero' => 0, 'one' => 1, 'two' => 2, 'three' => 3, 'four' => 4, 'five' => 5,
  'six' => 6, 'seven' => 7, 'eight' => 8, 'nine' => 9, 'ten' => 10, 'eleven' => 11,
  'twelve' => 12, 'thirteen' => 13, 'fourteen' => 14, 'fifteen' => 15, 'sixteen' => 16,
  'seventeen' => 17, 'eighteen' => 18, 'nineteen' => 19, 'twenty' => 20, 'thirty' => 30,
  'fourty' => 40, 'fifty' => 50, 'sixty' => 60, 'seventy' => 70, 'eighty' => 80,
  'ninety' => 90, 'hundred' => 100
}

Instance Method Summary collapse

Instance Method Details

#anchor_for_symbol(sym) ⇒ Object 



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# File 'lib/medic/anchor.rb', line 13

def anchor_for_symbol(sym)
  return unless sym
  return sym if sym.to_s == '0'
  return sym if sym.is_a? Fixnum
  return sym if sym.is_a? NSDate
  parts = sym.to_s.gsub('_', ' ').split.reject{ |part| part == 'ago' }
  component = parts.pop.chomp('s')
  n = parts.map{|p| NUMBER_WORDS[p] || p.to_i}.reduce do |sum, p|
    if p == 100 && sum > 0
      sum * p
    else
      sum + p
    end
  end
  n ||= 1
  date_comp = NSDateComponents.new.send("#{component}=", -n)
  NSCalendar.currentCalendar.dateByAddingComponents(date_comp, toDate: NSDate.date, options: 0)
end