Bootstrap Accordion collapse with Ruby hash

Question

Collapse is only working on the first button, and I know it's because only the first div id is being set for all buttons. How do I iterate and make new div id's for each element when using hash.each?

Here's my erb:

<% @contacts.each do |category, hash| %>

<div class="panel-group" id=accordion">

 <div class="panel panel-default">

   <div class="panel-heading">

   <h3 class="panel-title"><%= category %></h3>

   </div>

 <div class="panel-body">

 <ul class="list-group">

  <% hash.each do |contact| %>

    <li class="list-group-item" style="border: none">

    <button type="button" class="btn btn-info" data-toggle="collapse" data-parent="#accordion" data-target="#demo"><%= contact['name'] %></button>

    <div id="demo" class="panel-collapse collapse">

        <div class="panel-body"><%= contact['email'] %></br><%= contact['ext'] %>

        </div>

    </div>

   </li>

<% end %>

   </ul>

  </div>

 </div>

</div>

<% end %>

Here's the corresponding code from my .rb:

get '/contact' do

contact = Contacts.new

@contacts = contact.getContacts

@contacts.each { |s| puts "get /contact found contact #{s.last.first['name']}" }

erb :contact

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Answer 1

try

<% hash.each_with_index do |contact, index| %>
    <li class="list-group-item" style="border: none">
    <button type="button" class="btn btn-info" data-toggle="collapse" data-parent="#accordion" data-target="#collapse<%= index %>"><%= contact['name'] %></button>
    <div id="collapse<%= index %>" class="panel-collapse collapse">
        <div class="panel-body"><%= contact['email'] %></br><%= contact['ext'] %>
        </div>
    </div>
   </li>
<% end %>

Bootstrap Accordion collapse with Ruby hash

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