Dynamically modify id within html tag using embedded ruby -

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how can dynamically set id within html tag?

specifically, i'm trying this:

<td <% "id=unit_" + unit.id.to_s %> > *content goes here*  </td>

where unit.id integer variable.

can used embedded ruby (i.e. <% %>) within html tag this?

if not, how else can achieve i'm trying do?

<td id="<%= unit.id.to_s %>">...</td>

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