How can I generate a unique dom id for a html tag from model

Question

I am having an index view with several rows for items which have multiple attributes. I would like to update the content of an items attribute with ajax, therefore I need a unique dom id. Is there a helper method available? What I am doing right now is:

<span id="<%=  item.id.to_s + "_on_storage"%>">

Best, Phil

Answer 1

You can use

dom_id(item)

Which is an ActiveRecord method for generating DOM IDs.

Answer 2

A good practice as well is to use HTML5 data attributes:

<span data-item-id="<%= item.id %>">