Class: Paperclip::Validators::AttachmentSizeValidator

Inherits:
ActiveModel::Validations::NumericalityValidator
  • Object
show all
Defined in:
lib/paperclip/validators/attachment_size_validator.rb

Constant Summary collapse

AVAILABLE_CHECKS = 
[:less_than, :less_than_or_equal_to, :greater_than, :greater_than_or_equal_to]

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ AttachmentSizeValidator

Returns a new instance of AttachmentSizeValidator.



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# File 'lib/paperclip/validators/attachment_size_validator.rb', line 8

def initialize(options)
  extract_options(options)
  super
end

Class Method Details

.helper_method_name ⇒ Object 



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# File 'lib/paperclip/validators/attachment_size_validator.rb', line 13

def self.helper_method_name
  :validates_attachment_size
end

Instance Method Details

#check_validity! ⇒ Object 



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# File 'lib/paperclip/validators/attachment_size_validator.rb', line 41

def check_validity!
  unless (AVAILABLE_CHECKS + [:in]).any? { |argument| options.has_key?(argument) }
    raise ArgumentError, "You must pass either :less_than, :greater_than, or :in to the validator"
  end
end

#validate_each(record, attr_name, value) ⇒ Object 



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# File 'lib/paperclip/validators/attachment_size_validator.rb', line 17

def validate_each(record, attr_name, value)
  base_attr_name = attr_name
  attr_name = "#{attr_name}_file_size".to_sym
  value = record.send(:read_attribute_for_validation, attr_name)

  unless value.blank?
    options.slice(*AVAILABLE_CHECKS).each do |option, option_value|
      option_value = option_value.call(record) if option_value.is_a?(Proc)
      option_value = extract_option_value(option, option_value)

      unless value.send(CHECKS[option], option_value)
        error_message_key = options[:in] ? :in_between : option
        [ attr_name, base_attr_name ].each do |error_attr_name|
          record.errors.add(error_attr_name, error_message_key, filtered_options(value).merge(
            :min => min_value_in_human_size(record),
            :max => max_value_in_human_size(record),
            :count => human_size(option_value)
          ))
        end
      end
    end
  end
end