From db6d345e54a7727e89fdf9bf6f7b6ad15327429f Mon Sep 17 00:00:00 2001
From: lmarcouiller <lucas.marcouiller@gmail.com>
Date: Tue, 30 Aug 2022 11:31:20 +0200
Subject: [PATCH] Fix #21810 : Broken statistics in project module

---
 htdocs/projet/class/projectstats.class.php | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/htdocs/projet/class/projectstats.class.php b/htdocs/projet/class/projectstats.class.php
index 9b2314deacc..f1295c10424 100644
--- a/htdocs/projet/class/projectstats.class.php
+++ b/htdocs/projet/class/projectstats.class.php
@@ -528,4 +528,22 @@ class ProjectStats extends Stats
 		// var_dump($res);print '<br>';
 		return $res;
 	}
+
+	/**
+	 * Return average of entity by month
+	 * @param	int     $year           year number
+	 * @return 	int						value
+	 */
+	protected function getAverageByMonth($year)
+	{
+		$sql = "SELECT date_format(datef,'%m') as dm, AVG(f.".$this->field.")";
+		$sql .= " FROM ".$this->from;
+		$sql .= $this->join;
+		$sql .= " WHERE f.datef BETWEEN '".$this->db->idate(dol_get_first_day($year))."' AND '".$this->db->idate(dol_get_last_day($year))."'";
+		$sql .= " AND ".$this->where;
+		$sql .= " GROUP BY dm";
+		$sql .= $this->db->order('dm', 'DESC');
+
+		return $this->_getAverageByMonth($year, $sql);
+	}
 }