app/views/das/sources.xml.erb
<SOURCES>
<% @users.each do |u| %>
<% if u.genotypes != []%>
<SOURCE uri="<%= u.id %>" title="<%= u.id %>" description="<%= u.id %>">
<MAINTAINER email="admin@opensnp.org"/>
<VERSION created="<%=u.created_at%>" uri="<%= u.id %>">
<COORDINATES uri="http://www.dasregistry.org/dasregistry/coordsys/CS_DS311" taxid="9606" source="Chromosome" authority="GRCh" test_range="" version="37">GRCh_37,Chromosome,Homo sapiens</COORDINATES>
<CAPABILITY query_uri="<%= root_url+"das/"+u.id.to_s+"/features"%>" type="das1:features"/>
<CAPABILITY type="das1:unknown-segment"/>
</VERSION>
</SOURCE>
<%end%>
<% end %>
</SOURCES>