modificato il form in modo da inserire il button nell'input

{% endblock %}

{% block content %}

<form action="" method="post">{% csrf_token %}

    <button class="btn btn-primary" type="button" data-toggle="modal" data-target="#qr-scan">

        <span class="glyphicon glyphicon-qrcode" aria-hidden="true"></span><span class="sr-only">Read QR code</span>

    </button>

    {% bootstrap_form form %}

 {% for field in form %}

    {% if field.name == "id" %}

      {% bootstrap_field field  addon_after='<span class="input-group-btn"><button class="btn btn-primary" type="button" data-toggle="modal" data-target="#qr-scan"><span class="glyphicon glyphicon-qrcode" aria-hidden="true"></span><span class="sr-only">Read QR code</span></button></span>' %}

  {% else %}

  {% bootstrap_field field %}

    {% endif %}

{% endfor %}

    {% buttons %}

        <button type="submit" class="btn btn-primary">

            {% bootstrap_icon "star" %} Submit

        </button>

    {% endbuttons %}

    </form>

{% endblock %}

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