add the possibility to add a participation of a person to an event

ref #5

Entity/Participation.php

@@ -2,10 +2,14 @@
 
 namespace Chill\EventBundle\Entity;
 
+use Chill\MainBundle\Entity\HasScopeInterface;
+use Chill\MainBundle\Entity\HasCenterInterface;
+use Symfony\Component\Validator\Context\ExecutionContextInterface;
+
 /**
  * Participation
  */
-class Participation
+class Participation implements HasCenterInterface, HasScopeInterface
 {
     /**
      * @var integer
@@ -183,4 +187,50 @@ class Participation
     {
         return $this->status;
     }
+
+    public function getCenter()
+    {
+        if ($this->getEvent() === NULL) {
+            throw new \RuntimeException('The event is not linked with this instance. '
+                    . 'You should initialize the event with a valid center before.');
+        }
+        
+        return $this->getEvent()->getCenter();
+    }
+
+    public function getScope()
+    {
+        if ($this->getEvent() === NULL) {
+            throw new \RuntimeException('The event is not linked with this instance. '
+                    . 'You should initialize the event with a valid center before.');
+        }
+        
+        return $this->getEvent()->getCircle();
+    }
+    
+    /**
+     * Check that : 
+     * 
+     * - the role can be associated with this event type
+     * - the status can be associated with this event type
+     * 
+     * @param ExecutionContextInterface $context
+     */
+    public function isConsistent(ExecutionContextInterface $context)
+    {
+        if ($this->getRole()->getType()->getId() !== 
+                $this->getEvent()->getType()->getId()) {
+            $context->buildViolation('The role is not allowed with this event type')
+                    ->atPath('role')
+                    ->addViolation();
+        }
+        
+        if ($this->getStatus()->getType()->getId() !==
+                $this->getEvent()->getType()->getId()) {
+            $context->buildViolation('The status is not allowed with this event type')
+                    ->atPath('status')
+                    ->addViolation();
+        }
+    }
+
 }