_upload_form.html.erb

<%= form_for(Upload.new, html: { class: "dropzone upload-content", id: "dropzone" }) do |f| %>
 <div class="upload-fields">
   <div class="upload-field-single">
     <%= f.label :Nome, class: "name-label" %>
     <%= f.text_field :name, class: "name-field", required: true %>
   </div>
   <div class="upload-field-single">
     <%= f.label :Email, class: "email-label" %>
     <%= f.email_field :email, class: "email-field", required: true, pattern: "[^@\s]+@[^@\s]+\.[^@\s]+" %>
   </div>
 </div>
 <div class="dz-message needsclick">
   <h3>Arraste os arquivos para cá</h3> ou <strong>clique</strong> para adicioná-los
 </div>
 <div class="fallback">
   <%= f.file_field :document %>
 </div>
 <%= f.submit "Envie os arquivos" , class: "submit-upload" %>
<% end %>