Class: MiniPaperclip::Validators::GeometryValidator

Inherits:
ActiveModel::EachValidator
  • Object
show all
Defined in:
lib/mini_paperclip/validators/geometry_validator.rb

Constant Summary collapse

Error = 
Class.new(StandardError)
ALLOW_OPTIONS = 
[:less_than_or_equal_to]

Instance Method Summary collapse

Instance Method Details

#check_validity! ⇒ Object 



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# File 'lib/mini_paperclip/validators/geometry_validator.rb', line 9

def check_validity!
  [:width, :height].each do |key|
    if options[key]
      keys = ALLOW_OPTIONS & options[key].keys
      if keys.empty?
        raise ArgumentError, ":#{key} option should specify the :less_than_or_equal_to ."
      end
    end
  end
end

#validate_each(record, attribute, value) ⇒ Object

validate_attachment :image,

geometry: {
  width: { less_than_or_equal_to: 3000 },
  height: { less_than_or_equal_to: 3000 } }



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# File 'lib/mini_paperclip/validators/geometry_validator.rb', line 24

def validate_each(record, attribute, value)
  return unless value.waiting_write_file
  value.waiting_write_file.rewind
  image_size = ImageSize.new(value.waiting_write_file)
  # invalid format should not relate geometry
  unless image_size.format
    MiniPaperclip.config.logger.info("[mini_paperclip] cannot get image_size from #{value.waiting_write_file.inspect}")
    return
  end

  expected_width_less_than_or_equal_to = options.dig(:width, :less_than_or_equal_to)
  expected_height_less_than_or_equal_to = options.dig(:height, :less_than_or_equal_to)
  unless (!expected_width_less_than_or_equal_to || image_size.width <= expected_width_less_than_or_equal_to) &&
      (!expected_height_less_than_or_equal_to || image_size.height <= expected_height_less_than_or_equal_to)
    record.errors.add(
      attribute,
      :geometry,
      actual_width: image_size.width,
      actual_height: image_size.height,
      expected_width_less_than_or_equal_to: expected_width_less_than_or_equal_to,
      expected_height_less_than_or_equal_to: expected_height_less_than_or_equal_to,
    )
  end
end