anchor.diff:          var cs = {};
           
           cs['id'] = courseSummary.id;
  -        cs['student_user_name'] = courseSummary.user_name;
  -        cs['student_first_name'] = courseSummary.first_name;
  -        cs['student_last_name'] = courseSummary.last_name;
  +        cs['user_name'] = courseSummary.user_name;
  +        cs['first_name'] = courseSummary.first_name;
  +        cs['last_name'] = courseSummary.last_name;
   
           <% for assignment in @assignments %>
             var id = <%= assignment.id %>;
  
positive.code:     getDefaultProps: function() {
        var columns = [
          {
            id: 'student_user_name',
            content: '<%= j raw I18n.t('course_summaries_index.user_name') %>',
            sortable: true,
            compare: compare_anchor_text,
            searchable: true
          },
          {
            id: 'student_first_name',
            content: '<%= j raw I18n.t('course_summaries_index.first_name') %>',
            sortable: true,
            compare: compare_anchor_text,
            searchable: false
          },
          {
            id: 'student_last_name',
            content: '<%= j raw I18n.t('course_summaries_index.last_name') %>',
            sortable: true,
            compare: compare_anchor_text,
            searchable: false
          }
        ];
        
  
negative.code:         columns.push({
            id: 'marking_scheme_' + <%= marking_scheme.id %>,
            content: '<%= marking_scheme.name %>',
            sortable: true,
            compare: compare_numeric_values,
            searchable: false
          });
        <% end %>
  