Re: [Rails] Show thumbnail preview of image before upload

2012/9/25 Avantec Van <lists@ruby-forum.com>:
> Is there any ruby way to show thumbnail preview of image before upload?

No!

There can't be! Ruby needs you to have that image on the server to
generate a thumb of it, but before the upload it is not on the server.

What you try here, is not possible in PHP, whatever.NET or any other
kind of server-side-scripting-language.

But wait… Once, I stumbled upon a project, that is a ruby-interpreter
implemented in JavaScript, but can't remember its name. With that it
would be possible to generate the preview, but not to save it
anywhere…

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