Dynamically Generate Editable PDF

Is there a way to create an editable PDF programmatically? By editable, I mean you can click in a text area and type in your name, that kind of thing.

I'm using Ruby an开发者_开发知识库d have found PrinceXML and Princely to be nice projects. I'm wondering if they could do that?

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Prince doesn't mention forms in the documentation, and renders forms as static drawings, so I doubt it.

pdfTeX can do it with the hyperref package. Here's a tutorial.

Example:

\usepackage{hyperref}
\begin{Form}
\TextField[backgroundcolor={1 1 0},value=can do forms]{hyperref}
\end{Form}

It looks like this:

screenshot http://grab.by/23nP

(Of course, then you're using TeX instead of whatever reports library you like. I'm sure there's an alternative.)