edit.hbs

<form action="/notes/{{note._id}}" method="POST">
    <input type="hidden" name="_method" value="PUT">
    <div>
        <textarea name="title">{{note.title}} </textarea>

    </div>
    <div>
        <textarea name="body">{{note.body}} </textarea>

    </div>
    <div>
        <button type="submit">Submit!</button>
    </div>
</form>