Creating a tag input box like on Stack Overflow using Ruby on Rails

Question

How can I build a tag text box thing like here on Stack Overflow using Ruby on Rails?

Also, how do I handle the form post scenarios once the tags are submitted?

Answer 1

If you will take a look on the tags on Stack Overflow - it's just an anchor with span inside for removing it. And of course, you need to style it.

<a href="#">My Tag
    <span>X</span>
</a>

As for posting the form: Use jQuery and an Ajax request to post it to the server. More information is in jQuery.ajax().

Source code for a demo is at http://jsfiddle.net/Fj3zx/6/.

Also check out the Choosen plugin for jQuery.

Answer 2

The Meta Stack Overflow question Can I use the tag textbox script? might help.

It points people towards the plug-in Chosen.