Redmine/redmine/app/views/projects/add_document.rhtml

<h2><%=l(:label_document_new)%></h2>

<%= start_form_tag( { :action => 'add_document', :id => @project }, :class => "tabular", :multipart => true) %>
<%= render :partial => 'documents/form' %>

<div class="box">
<p><label for="attachment_file"><%=l(:label_attachment)%></label>
<%= file_field 'attachment', 'file' %></p>
</div>

<%= submit_tag l(:button_create) %>
<%= end_form_tag %>