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rqrcode-rails3

(★ 298)

Render QR codes with Rails 3

파일 탐색기

최종 버전 다운로드 (.zip)

- - size_calculator.rb
- rqrcode-rails3.rb
- - config.ru
  - Rakefile
- - navigation_test.rb
- - integration_case.rb
- - size_calculator_test.rb
- rqrcode_svg_test.rb
- test_helper.rb
.gitignore
CHANGELOG.md
Gemfile
MIT-LICENSE
Rakefile
README.md
rqrcode_rails3.gemspec

# 설치 가이드

1. 코드 내려받기

git clone https://github.com/samvincent/rqrcode-rails3

깃허브에서 프로젝트 코드 전체를 내 컴퓨터로 내려받습니다.

cd rqrcode-rails3

방금 내려받은 프로젝트 폴더 안으로 이동합니다.

2. Ruby

쉬움 추천

사전 준비물

Git GitHub에서 프로젝트 코드를 내려받으려면 필요합니다.
Ruby bundle 명령어를 쓰려면 Ruby가 필요합니다.

bundle install

Gemfile에 명시된 루비 라이브러리를 설치합니다.

✅ bundle install이 에러 없이 끝나면 README에 안내된 실행 명령어(예: rails server)로 마저 실행해보세요.

// repository documentation

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# Render QR codes easily from your Rails 3 application

This gem supports rendering either SVG or PNG, JPEG, and GIF formats.

SVG, because of it's vector nature, will scale easily when intended for print. Offering QR endpoints enables others to integrate with your service in possibly interesting ways.

## Installation

Add the following to your `Gemfile`.

gem 'rqrcode-rails3'

If you want to use the PNG, JPEG or GIF format, you will have to have **ImageMagick** installed on your system.
You will also want to add the **mini_magick** gem to your application's `Gemfile`.

gem 'mini_magick'

## How to use

In your controller actions, you could return a QR code that links to the current page like this:

```ruby
respond_to do |format|
  format.html
  format.svg  { render :qrcode => request.url, :level => :l, :unit => 10 }
  format.png  { render :qrcode => request.url }
  format.gif  { render :qrcode => request.url }
  format.jpeg { render :qrcode => request.url }
end
```
  
#### Options:

* `:size`   – This controls how big the QR Code will be. Smallest size will be chosen by default. Set to maintain consistent size.
* `:level`  – The error correction level, can be:
  * Level `:l` 7%  of code can be restored
  * Level `:m` 15% of code can be restored
  * Level `:q` 25% of code can be restored
  * Level `:h` 30% of code can be restored (default :h) 
* `:offset` – Padding around the QR Code (e.g. 10)
* `:unit`   – How many pixels per module (e.g. 11)
* `:fill`   – Background color (e.g "ffffff" or :white)
* `:color`  – Foreground color for the code (e.g. "000000" or :black)
  
## About

This project was inspired by the first chapter in José Valim's book [Crafting Rails Applications](http://pragprog.com/titles/jvrails/crafting-rails-applications)

QR codes are encoded by [rqrcode](https://github.com/whomwah/rqrcode)