app/views/sets/edit.html.erb
<div class="container-fluid">
<h1>Edit set</h1>
<div id="spectra" class="pull-right span6">
<% @set.spectrums.each do |spectrum| %>
<img src="<%= spectrum.photo.url(:thumb) %>" />
<% end %>
</div>
<div class="span6">
<br />
<form action="/sets/update/<%= @set.id %>" class="form" id="new_spectra_set" method="post">
<input type='hidden' name='authenticity_token' value="<%= form_authenticity_token %>"/>
<input placeholder="Title" name="title" size="30" type="text" tabindex="1" value="<%= @set.title %>" />
<br />
<textarea placeholder="describe your set" cols="40" name="notes" tabindex="2" rows="10"><%=h @set.notes %></textarea>
<br />
<button tabindex="3" class="btn-large btn-primary" type="submit">Save</button>
</form>
</div>
</div>