Class: FullMetalBody::Internal::InputFileValidator

Inherits:
ActiveModel::EachValidator
  • Object
show all
Defined in:
lib/full_metal_body/internal/input_file_validator.rb

Constant Summary collapse

DEFAULT_CONTENT_TYPES = 
'*'.freeze
DEFAULT_FILE_SIZE = 
100.megabytes

Instance Method Summary collapse

Instance Method Details

#check_validity! ⇒ Object 



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# File 'lib/full_metal_body/internal/input_file_validator.rb', line 9

def check_validity!
  if options[:content_type]
    value = options[:content_type]
    unless value.is_a?(String) || (value.is_a?(Array) && value.all?(String))
      raise ArgumentError, ":content_type must be String or Array<String>"
    end
  end
  if options[:file_size]
    value = options[:file_size]
    raise ArgumentError, ":file_size must be a non-negative Integer" unless value.is_a?(Integer) && value >= 0
  end
end

#validate_each(record, attribute, value) ⇒ Object 



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# File 'lib/full_metal_body/internal/input_file_validator.rb', line 22

def validate_each(record, attribute, value)
  return if value.nil?

  content_types = options[:content_type] || DEFAULT_CONTENT_TYPES
  file_size = options[:file_size] || DEFAULT_FILE_SIZE

  # type
  unless value.is_a? ActionDispatch::Http::UploadedFile
    return record.errors.add(attribute, :file_wrong_type, value: value)
  end

  # content type
  if content_types != '*' && Array(content_types).exclude?(value.content_type)
    return record.errors.add(attribute, :invalid_content_type)
  end

  # file size
  if value.size > file_size
    record.errors.add(attribute, :too_large_size)
  end
end