 <form class='advanced-blob-host-form'>
     <p>
         <input type="radio" name="blob_form" value="url">
         <b>Enter the URL of a file : </b>{{url_form}}
     </p>
     <p>
         <input type="radio" name="blob_form" value="file">
         <b>Upload a File: </b>{{file_form}}
     </p>
</form>