Class: Paperclip::Validators::AttachmentWidthValidator

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

Constant Summary collapse

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

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ AttachmentWidthValidator

Returns a new instance of AttachmentWidthValidator.



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

def initialize(options)
  extract_options(options)
  super
end

Instance Method Details

#check_validity! ⇒ Object 



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# File 'lib/paperclip/validators/attachment_width_validator.rb', line 29

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_width_validator.rb', line 13

def validate_each(record, attr_name, value)
  attachment = record.send(attr_name)
  dimensions = Paperclip::Geometry.from_file(attachment.queued_for_write[:original])
  value = dimensions.width.to_i
  options.slice(*AVAILABLE_CHECKS).each do |option, option_value|
    option_value = extract_option_value(option, option_value)
    unless value.send(CHECKS[option], option_value)
      error_message_key = options[:in] ? :in_between : option
      record.errors.add(attr_name, error_message_key, filtered_options(value).merge(
        :min => min_value,
        :max => max_value
      ))
    end
  end
end