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require 'action_controller'
require 'rqrcode'
require 'rqrcode-rails3/size_calculator.rb'
require 'rqrcode-rails3/renderers/svg.rb'
module RQRCode
Mime::Type.register "image/svg+xml", :svg unless Mime::Type.lookup_by_extension(:svg)
Mime::Type.register "image/png", :png unless Mime::Type.lookup_by_extension(:png)
Mime::Type.register "image/jpeg", :jpeg unless Mime::Type.lookup_by_extension(:jpeg)
Mime::Type.register "image/gif", :gif unless Mime::Type.lookup_by_extension(:gif)
extend SizeCalculator
def render_qrcode(string, format, options)
size = options[:size] || RQRCode.minimum_qr_size_from_string(string)
level = options[:level] || :h
qrcode = RQRCodeCore::QRCode.new(string, :size => size, :level => level)
svg = RQRCode::Renderers::SVG::render(qrcode, options)
if format && format == :svg
svg
else
image = MiniMagick::Image.read(svg) { |i| i.format "svg" }
image.format format
image.to_blob
end
end
module_function :render_qrcode
ActionController::Renderers.add :qrcode do |string, options|
format = self.request.format.symbol
data = RQRCode.render_qrcode(string, format, options)
self.response_body = render_to_string(:text => data, :template => nil)
end
end
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