{% set invites = [] %}
{#
    Get attendees of the event applicable for hangouts invitation:
    - email is not empty
    - status is not declined
    - user is not owner user
#}
{% for attendee in entity.childAttendees %}
    {% if attendee.statusCode != constant('Oro\\Bundle\\CalendarBundle\\Entity\\Attendee::STATUS_DECLINED') and attendee.email is not empty %}
        {% set invites = invites|merge([{
            id: attendee.email,
            invite_type: 'EMAIL'
        }]) %}
    {% endif %}
{% endfor %}
<div class="pull-left btn-group">
    {% include "OroHangoutsCallBundle::startHangoutButton.html.twig" %}
</div>