Class: AWS::Record::CountValidator

Inherits:
Validator
  • Object
show all
Defined in:
lib/aws/record/validators/count.rb

Constant Summary collapse

ACCEPTED_OPTIONS =
[
  :exactly, :within, :minimum, :maximum,
  :too_many, :too_few, :wrong_number,
  :on, :if, :unless,
]

Instance Attribute Summary

Attributes inherited from Validator

#attribute_names, #options

Instance Method Summary collapse

Methods inherited from Validator

#initialize, #validate

Constructor Details

This class inherits a constructor from AWS::Record::Validator

Instance Method Details

#setup(record_class) ⇒ Object


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# File 'lib/aws/record/validators/count.rb', line 28

def setup record_class
  ensure_at_least_one(:within, :exactly, :minimum, :maximum)
  ensure_exclusive(:within, :exactly, [:minimum, :maximum])
  ensure_type(Range, :within)
  ensure_type(Integer, :exactly, :minimum, :maximum)
  ensure_type(String, :too_many, :too_few, :wrong_number)
end

#validate_attribute(record, attribute_name, value) ⇒ Object


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# File 'lib/aws/record/validators/count.rb', line 36

def validate_attribute record, attribute_name, value

  count = case value
  when nil then 0
  when String then 1
  when Enumerable then value.count
  else 1
  end

  if exact = options[:exactly]
    unless count == exact
      record.errors.add(attribute_name, wrong_number(exact, count))
    end
  end

  if within = options[:within]
    if count < within.first
      record.errors.add(attribute_name, too_few(within.first, count))
    end
    if count > within.last
      record.errors.add(attribute_name, too_many(within.last, count))
    end
  end

  if min = options[:minimum]
    if count < min
      record.errors.add(attribute_name, too_few(min, count))
    end
  end

  if max = options[:maximum]
    if count > max
      record.errors.add(attribute_name, too_many(max, count))
    end
  end

end