Rails Carrierwave JQuery File Upload

一直想做一個基於Ajax上傳圖片功能，網上找到一個Jquery File Upload。以及基於Rails Carrierwave的DemoRails-Carrierwave-Jquery-File-Upload。

參考它的README.md clone並配置環境。在bundle install 安裝rmagick時報錯：

Installing rmagick (2.13.1) with native extensions Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

原因是rmagick需要本地library支持：libxml2-dev libxslt1-dev imagemagick libmagickwand-dev

apt-get install libxml2-dev libxslt1-dev imagemagick libmagickwand-dev

參考：

http://blueimp.github.io/jQuery-File-Upload/

https://github.com/n0ne/Rails-Carrierwave-jQuery-File-Upload

http://stackoverflow.com/questions/9407273/error-installing-rmagick-gem-on-osx-error-failed-to-build-gem-native-extensiosudo