aardbei/app/views/groups/mass_add_mem...

.container
  .row
    .col-md-12
      %h1
        Mass-adding members to
        = @group.name
      = form_tag("/groups/#{@group.id}/mass_add", method: 'post', multipart: true) do
        = file_field_tag 'spreadsheet'
        = submit_tag