app/views/home/validate_ontology_file_show.html.haml
%div#bd_container{style: "padding: 2em;"}
%h1 Validate your ontology file
%div#validate_form{style: "margin-top: 1em;"}
=form_tag({:action => 'validate_ontology_file'}, :multipart => true) do
%input{type: "file", name: "ontology_file"}
%input{type: "submit", value: "Validate"}