Rails - Jun 2013 - Open new page with rails link_to and bootstrap modal

I''m having some problem to load a new page in a modal with bootstrap on
Rails.

Here is the important part on my eventos/index.html.erb

<div id="content">        
  <% @eventos.each do |evento| %>
  <!--Bar 2-->
  <div class="mosaic-block bar2">
  **<%= link_to(evento, :class=>"mosaic-overlay", :id =>
"evento" , "data-toggle" =>     "modal",
''data-target'' => ''#eventoModal'') do
%>**
    <div class="details">
      <h4><%= evento.local %> - <%=
evento.data.to_time.strftime(''%e/%m'') %></h4>
      <h4>Mais+</h4>
    </div>
    <%end%>
  <div class="mosaic-backdrop"><%= image_tag
evento.attachment.url(:small) %></div>
  </div>
 <% end %>

As you can see there is a link_to to my "evento" (rendered html:

a href="/eventos/1" class="mosaic-overlay"
data-target="#eventoModal" data-toggle="modal"
id="evento"

But when I click the link, nothing happens (before add the modal it was 
working)

Here is evento/show.html.erb

<div class="modal" id="eventoModal">
     <p>Some code</p></div>

and finally on my assets/javascripts/eventos.js.coffe I have this:

$(''#eventoModal'').modal(options)

Anyone can help me show the evento/show.html.erb in a modal on the 
evento/index.html.erb page?

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