Module: ActiveStorageSupport::Base64Attach

Defined in:
lib/active_storage_support/base64_attach.rb

Class Method Summary collapse

Class Method Details

.attachment_from_data(attachment) ⇒ Object 



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# File 'lib/active_storage_support/base64_attach.rb', line 6

def attachment_from_data(attachment)
  attachment = attachment.to_h if attachment.is_a?(ActionController::Parameters)

  if attachment.is_a?(Hash)
    attachment = attachment.symbolize_keys
    fill_attachment_data(attachment, attachment.delete(:data))
  end

  attachment
end

.content_type(headers) ⇒ Object

rubocop:enable Metrics/AbcSize



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# File 'lib/active_storage_support/base64_attach.rb', line 30

def content_type(headers)
  headers =~ /^data:(.*?)$/
  Regexp.last_match(1).split(';base64').first
end

.fill_attachment_data(attachment, base64_data) ⇒ Object

rubocop:disable Metrics/AbcSize



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# File 'lib/active_storage_support/base64_attach.rb', line 18

def fill_attachment_data(attachment, base64_data)
  return unless base64_data.try(:is_a?, String) && base64_data.strip.start_with?('data')

  headers, data = base64_data.split(',')
  decoded_data  = Base64.decode64(data)

  attachment[:io] = StringIO.new(decoded_data)
  attachment[:content_type] ||= content_type(headers)
  attachment[:filename]     ||= Time.current.to_i.to_s
end