Initial commit

app/models/qr_code.rb

@@ -0,0 +1,38 @@
+class QrCode
+  attr_accessor :filename
+
+  def self.build_from_contract_template(contract_template)
+    account   = contract_template.project.account
+    locale    = I18n.locale
+    host      = AppHost.new.domain_with_port
+    route     = [:new, account, contract_template.project, contract_template, "#{contract_template.release_type}_release", locale: I18n.locale, host: AppHost.new.domain_with_port]
+
+    url       = Rails.application.routes.url_helpers.url_for(route)
+    filename  = [contract_template.project.name, contract_template.name].map(&:parameterize).join("_")
+
+    new(url, filename)
+  end
+
+  def initialize(url, filename = "qrcode.png")
+    @url = url
+    @filename = filename
+  end
+
+  def to_png
+    Tempfile.new.tap do |file|
+      _qr_code.as_png(file: file)
+    end
+  end
+
+  def to_base64_png(width = 100, height = 100)
+    _qr_code.as_png.resize(width, height).to_data_url
+  end
+
+  private
+
+  attr_reader :url
+
+  def _qr_code
+    @_qr_code ||= RQRCode::QRCode.new(url)
+  end
+end