app/views/patients/import_view.html.erb
<% flash.each do |key, value| %>
<%= content_tag :div, value, class: "flash #{key}" %>
<% end %>
<div id="import_view">
<h4> Please select an Excel sheet</h4>
<%= form_tag import_excel_patients_path, multipart: true do %>
<%= file_field_tag :file %>
<%= submit_tag "Import", :class=>"option-button"%>
<% end %>
</div>