app/views/collecting_events/batch_load/simple/_form.html.erb
<%= form_tag url, multipart: true do -%>
<%= file_field_tag :file -%>
<div class="field">
<%= label_tag :data_origin, 'Namespace for collecting event', title: 'Choose the namespace for the identifier to be applied to the collecting event.' -%>
<br>
<%= collecting_event_namespace_select_tag -%>
</div>
<%= content_for :warn_level -%>
<%= submit_tag submit -%>
<% end %>