rqrcode_png
Problem: You need to generate your own QR code images
Solution: rqrcode_png
Overview
rqrcode_png extends rqrcode, adding one simple method to instances of QRCode, #to_img. ChunkyPNG is used to generate the image itself in pure Ruby. As few assumptions are made as possible regarding the image itself.
Rewrite
fork and rewrite part of the function
1. add size border size param
2. add qrcode color param
Usage
require 'rqrcode_png'
qr = RQRCode::QRCode.new( 'my string to generate', :size => 4, :level => :h )
png = qr.to_img # returns an instance of ChunkyPNG
png.resize(90, 90).save("really_cool_qr_image.png")NOTE: For now, the :size of the QR code has to be 14 or less. Working on this.
Bundler
gem 'rqrcode_png'Rails
With DragonFly
# app/models/product.rb
class Product < ActiveRecord::Base
image_accessor :qr_code
end# somewhere
qr_code_img = RQRCode::QRCode.new('http://www.google.com/', :size => 4, :level => :h ).to_img
@product.update_attribute :qr_code, qr_code_img.to_string# app/controllers/products.rb
def show
@product = Product.find(params[:id])
end# app/views/products/show.html.erb
<%= image_tag @product.qr_code.url %>Contributing
- Fork the project
- Send a pull request
- Don't touch the .gemspec, I'll do that when I release a new version
Copyright
MIT Licence (http://www.opensource.org/licenses/mit-license.html)