Class: SingleCardinalityValidator

Inherits:
ActiveModel::EachValidator
  • Object
show all
Defined in:
lib/hydra/validations/single_cardinality_validator.rb

Overview

SingleCardinalityValidator - validates that an enumerator value has size 0 or 1

validates :myattr, single_cardinality: true

Instance Method Summary collapse

Instance Method Details

#validate_each(record, attribute, value) ⇒ Object 



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# File 'lib/hydra/validations/single_cardinality_validator.rb', line 8

def validate_each(record, attribute, value)
  if value.respond_to?(:each)
    record.errors.add(attribute, "can't have more than one value") if value.size > 1
  end
end