Ruby inside html-erb files issue -

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i putting inside erb file

<% @user_friend.each |friends| -%>   <%= content_tag :p, :class => "popin" %>     friends.email   <% end %> <% end -%>

and getting error message : 

compile error /var/www/gitorious/app/views/campaigns/new.html.erb:25: syntax error, unexpected ')' ..._tag :p, :class =>"popin" ).to_s); @output_buffer.concat ...                               ^ /var/www/gitorious/app/views/campaigns/new.html.erb:28: syntax error, unexpected kend, expecting ')' ;  end ...

could explain how can resolve ?

friends.email ruby code, need below:

<% @user_friend.each |friends| -%>   <%= content_tag :p, friends.email，:class =>"popin" %> <% end -%>

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