add an age aggregator for person

Export/Aggregator/AgeAggregator.php

@@ -0,0 +1,85 @@
+<?php
+
+/*
+ * Copyright (C) 2017 Champs-Libres <info@champs-libres.coop>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace Chill\PersonBundle\Export\Aggregator;
+
+use Chill\MainBundle\Export\AggregatorInterface;
+use Doctrine\ORM\QueryBuilder;
+use Symfony\Component\Form\Extension\Core\Type\DateType;
+
+/**
+ * 
+ *
+ * @author Julien Fastré <julien.fastre@champs-libres.coop>
+ */
+class AgeAggregator implements AggregatorInterface
+{
+    
+    public function addRole()
+    {
+        return null;
+    }
+
+    public function alterQuery(QueryBuilder $qb, $data)
+    {
+        $qb->addSelect('DATE_DIFF(:date_age_calculation, person.birthdate)/365 as person_age');
+        $qb->setParameter('date_age_calculation', $data['date_age_calculation']);
+        $qb->addGroupBy('person_age');
+    }
+
+    public function applyOn()
+    {
+        return 'person';
+    }
+
+    public function buildForm(\Symfony\Component\Form\FormBuilderInterface $builder)
+    {
+        $builder->add('date_age_calculation', DateType::class, array(
+            'label' => "Calculate age in relation to this date",
+            'data'  => new \DateTime(),
+            'attr'  => array('class' => 'datepicker'),
+            'widget'=> 'single_text',
+            'format' => 'dd-MM-yyyy'
+        ));
+    }
+
+    public function getLabels($key, array $values, $data)
+    {
+        return function($value) {
+            if ($value === '_header') {
+                return "Age";
+            }
+            
+            return $value;
+        };
+    }
+
+    public function getQueryKeys($data)
+    {
+        return array(
+            'person_age'
+        );
+    }
+
+    public function getTitle()
+    {
+        return "Aggregate by age";
+    }
+
+}