Allow to add multiple participation

The participationController accept a new parameter : `persons_ids`,
which must receive a comma-separated list of person ids. A participation
will be create for all those peoples.

The `new` and `create` actions does not allow to receive both
`person_id` and `persons_ids`.

Tests are added.

ref #6

Resources/views/Participation/new-multiple.html.twig

@@ -3,30 +3,57 @@
 {% import 'ChillPersonBundle:Person:macro.html.twig' as person_macro %}
 
 {% block title 'Participation creation'|trans %}
+    
+        {% form_theme form _self %}
+    
+    {% block _collection_row %}
+        <tr>
+        <td>
+            {{ form_widget(form) }}
+        </td>
+        <td>
+            {# {{ form_row(participationField.status) }} #}
+        </td>
+        </tr>
+    {% endblock %}
 
 {% block event_content -%}
     <h1>{{ 'Participation creation'|trans }}</h1>
 
     <table>
         <tbody>
-            <tr>
-                <th>{{ 'Associated person'|trans }}</th>
-                <td>{{ person_macro.render(participation.person) }}</td>
-            </tr>
             <tr>
                 <th>{{ 'Associated event'|trans }} </th>
-                <td>{{ participation.event.name }}</td>
+                <td>{{ participations[0].event.name }}</td>
             </tr>
         </tbody>
     </table>
-    
-    {{ form_start(form) }}
-    {{ form_row(form.role) }}
-    {{ form_row(form.status) }}
+            
 
+    
+    {{ form_start(form) }} 
+    <table>
+        <thead>
+            <tr>
+                <th>{{ 'Person'|trans }}</th>
+                <th>{{ 'Role'|trans }}</th>
+                <th>{{ 'Status'|trans }}</th>
+            </tr>
+        </thead>
+        <tbody>
+            {% for participationField in form.participations %}
+            <tr>
+                <td>{{ person_macro.render(participationField.vars.value.person) }}</td>
+                <td>{{ form_widget(participationField.role) }}</td>
+                <td>{{ form_widget(participationField.status) }}</td>
+            </tr>
+            {% endfor %} 
+        </tbody>
+    </table>
+        
     <ul class="record_actions">
         <li>
-            <a href="{{ path('chill_event__event_show', { 'event_id' : participation.event.id } ) }}" class="sc-button btn-cancel">
+            <a href="{{ path('chill_event__event_show', { 'event_id' : participations[0].event.id } ) }}" class="sc-button btn-cancel">
                 <i class="fa fa-arrow-left"></i>
                 {{ 'Back to the event'|trans }}
             </a>

Resources/views/Participation/new.html.twig

@@ -21,6 +21,9 @@
     </table>
     
     {{ form_start(form) }}
+    
+    {{ form_errors(form) }}
+    
     {{ form_row(form.role) }}
     {{ form_row(form.status) }}