Module: Hydra::Validations::EnumerableBehavior

Included in:
FormatValidator, InclusionValidator
Defined in:
lib/hydra/validations/enumerable_behavior.rb

Overview

EnumerableBehavior - a mixin for subclasses of ActiveModel::EachValidator adding validation for each member of an enumerable attribute value.

Behavior includes ‘fixing’ each error message to include the specific value which was invalid.

allow_empty option can be used instead of allow_blank for greater clarity and precision with enumerable values. If a validator includes this mixin, then an empty enumerable value will always be invalid if allow_empty is false or nil.

Instance Method Summary collapse

Instance Method Details

#validate_each(record, attribute, value) ⇒ Object 



17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
# File 'lib/hydra/validations/enumerable_behavior.rb', line 17

def validate_each(record, attribute, value)
  return super unless value.respond_to?(:each)
  if value.respond_to?(:empty?) && value.empty?
    record.errors.add(attribute, "can't be empty") unless options[:allow_empty]
  else
    value.each do |v| 
      prev = record.errors[attribute].size rescue 0
      super(record, attribute, v)
      messages = record.errors[attribute]
      if messages && messages.size > prev
        record.errors.add(attribute, fixed_message(v, messages.pop))
      end
    end
  end
end