add export button, route and controller method

Resources/config/routing/event.yml

@@ -40,3 +40,10 @@ chill_event__list_by_person:
     path:     /{person_id}/list
     defaults: { _controller: "ChillEventBundle:Event:listByPerson" }
     methods: [ GET ]
+
+chill_event__event_export_participations:
+    path:     /{event_id}/export/participations
+    defaults: { _controller: "ChillEventBundle:Event:exportParticipations" }
+    requirements:
+        event_id: \d+
+    methods: [ GET ]

Resources/views/Event/exportParticipations.html.twig

@@ -0,0 +1,3 @@
+{% for participation in event.participations %}
+    {{ dump(participation.person.firstname ~ ' ' ~ participation.person.lastname) }}
+{% endfor %}

Resources/views/Event/show.html.twig

@@ -104,6 +104,7 @@
         
     <ul class="record_actions">
         {% if count > 0 %}
+            <li><a href="{{ path('chill_event__event_export_participations', { 'event_id' : event.id } ) }}" class="sc-button btn-download">{{ 'Export participation list'|trans }}</a></li>
             <li><a href="{{ path('chill_event_participation_edit_multiple', { 'event_id' : event.id } ) }}" class="sc-button bt-edit">{{ 'Edit all the participations'|trans }}</a></li>
         {% endif %}
         </ul>