new Component Dropdown Nations

implemented in StudVW Tabs Details, Contact/Adress, Prestudent and Mobility

application/models/codex/Nation_model.php

@@ -11,4 +11,39 @@ class Nation_model extends DB_Model
 		$this->dbTable = 'bis.tbl_nation';
 		$this->pk = 'nation_code';
 	}
+
+	public function searchNations($filter=null)
+	{
+		$params = [];
+
+		if ($filter)
+		{
+			if (preg_match('/%[0-9A-Fa-f]{2}/', $filter)) {
+				$filter = urldecode($filter);
+			}
+			$filter = mb_strtolower($filter, 'UTF-8'); //for umlaute
+		}
+
+		$qry = "
+			SELECT
+				n.nation_code, n.langtext as label, n.kurztext, n.sperre
+			FROM
+				bis.tbl_nation n";
+
+		if ($filter)
+		{
+			$escapedFilter = $this->db->escape('%' . $filter . '%');
+
+			$qry .= "
+				WHERE
+					n.kurztext ILIKE $escapedFilter
+					OR n.engltext ILIKE $escapedFilter
+					OR n.nation_code ILIKE $escapedFilter
+			";
+		}
+
+		$qry .= " ORDER BY n.kontinent IS NULL DESC, n.kurztext ASC";
+
+		return $this->execQuery($qry, $params);
+	}
 }