netbox/netbox/templates/dcim/inc/_devicebay.html

<tr>
    <td>
        <i class="fa fa-fw fa-{% if devicebay.installed_device %}dot-circle-o{% else %}circle-o{% endif %}"></i> {{ devicebay.name }}
    </td>
    {% if devicebay.installed_device %}
        <td>
            <a href="{% url 'dcim:device' pk=devicebay.installed_device.pk %}">{{ devicebay.installed_device }}</a>
        </td>
        <td>
            <span>{{ devicebay.installed_device.device_type }}</span>
        </td>
    {% else %}
        <td colspan="2">
            <span class="text-muted">Vacant</span>
        </td>
    {% endif %}
    <td class="text-right">
        {% if perms.dcim.change_devicebay %}
            {% if devicebay.installed_device %}
                <a href="{% url 'dcim:devicebay_depopulate' pk=devicebay.pk %}" class="btn btn-danger btn-xs">
                    <i class="glyphicon glyphicon-remove" aria-hidden="true" title="Remove device"></i>
                </a>
            {% else %}
                <a href="{% url 'dcim:devicebay_populate' pk=devicebay.pk %}" class="btn btn-success btn-xs">
                    <i class="glyphicon glyphicon-plus" aria-hidden="true" title="Install device"></i>
                </a>
            {% endif %}
            <a href="{% url 'dcim:devicebay_edit' pk=devicebay.pk %}" class="btn btn-info btn-xs">
                <i class="glyphicon glyphicon-pencil" aria-hidden="true" title="Edit device bay"></i>
            </a>
        {% endif %}
        {% if perms.dcim.delete_devicebay %}
            {% if devicebay.installed_device %}
                <button class="btn btn-danger btn-xs" disabled="disabled">
                    <i class="glyphicon glyphicon-trash" aria-hidden="true"></i>
                </button>
            {% else %}
                <a href="{% url 'dcim:devicebay_delete' pk=devicebay.pk %}" class="btn btn-danger btn-xs">
                    <i class="glyphicon glyphicon-trash" aria-hidden="true" title="Delete device bay"></i>
                </a>
            {% endif %}
        {% endif %}
    </td>
</tr>