drag-and-drop folder content ( and subdirectories ) in app

how can a drag and drop a folder with music and other directories of music to a web-app ( in this case rails but i think the solution must be general ) to get the paths of all the songs so that i 开发者_如何学JAVAcan have an online music player for local content . Thanks .

With focus on the usability tag: I think its most common to "select files" from the web app rather than "drag and drop" into the web app.

When it comes to implementing the drag and drop feature, I think that JavaScript is a more important keyword than ruby. This feature must be implemented client side after all.

You should take a look at this question: HTML5 drag-drop uploads