Ruby on Rails Application

I'm trying to 开发者_JAVA百科create the following application with ruby on rails programming: application that displays a page of thumbnail images with each thumbnail linked to a corresponding full-sized image. When the user clicks on the thumbnail, the application will display the images. I downloaded sqlite3 as a database. I tried to do different procedures. I used scaffolding and migrations but I cannot make it to work. Can you please tell me how to do this?

Thanks

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Paperclip gem shall do the job. The railscasts is bit old and you may refer to github for various updates.

https://github.com/thoughtbot/paperclip/wiki
http://railscasts.com/episodes/134-paperclip