report_template_container_view.js

  MT.ReportTemplateContainerView = SC.ContainerView.extend({
    contentView: SC.TemplateView.extend({
      itemBinding: 'MT.reportTemplates.selectedItem',
      templateName: 'report_template_show'
    }),
    editView: SC.TemplateView.extend({
      itemBinding: 'MT.reportTemplates.selectedItem',
      templateName: 'report_template_edit'
    })
  });

report_templates.handlebars

{{view MT.ReportTemplateContainerView}}

result.html

<div id="sc457" class="sc-view sc-container-view"></div>