Problematic Javascript ERB code

_categories_brief.html.erb

 <ul class="indented unstyled" id= <%="categories_brief_".concat(origin)%> >

<li class="indented unstyled"><%=link_to 'Add category', new_category_path%></li>

<!--The categories -->
  <% for category in @categories %>  
    <li class='indented'><%= link_to category.name, Rails.application.routes.url_helpers.send( link_path, category) %> </li> 
  <% end %>  
</ul>  

gistfile1.txt

undefined local variable or method `origin' for #<#<Class:0x00000102d0edc0>:0x00000103e00de0>

search.js.erb

$('<%="#categories_brief_".concat(@source)%>)%>').html(
  '<%=escape_javascript(render partial: 'categories_brief', locals: {:link_path => @link_path, :origin=> @origin })%>'
  );