fixed findStreets query

application/PreorderIFrame/PreorderIFrameModel.php

@@ -58,33 +58,29 @@ class PreorderIFrameModel extends mfBaseModel
 
     public function findStreets(array $params): array
     {
-        $whereClauses = [];
+        if (empty($params['gemeindeId']) && empty($params['clusterId'])) return [];
-        if (!empty($params['gemeindeId'])) {
-            $whereClauses[] = "g.id = " . intval($params['gemeindeId']);
-        } elseif (!empty($params['clusterId'])) {
-            $whereClauses[] = "gn.netzgebiet_id = " . intval($params['clusterId']);
-        } else {
-            return [];
-        }
 
-        $whereClauses[] = "o.name = '" . $this->db->escape($params['city']) . "'";
+        $sql = "SELECT DISTINCT s.name
-        $whereClauses[] = "EXISTS (SELECT 1 FROM addressdb.Plz p WHERE p.plzstring = " . $this->db->escape($params['zip']) . " AND p.gemeinde_id = o.gemeinde_id)";
+                FROM addressdb.Strasse s
-        $whereString = implode(" AND ", $whereClauses);
+                JOIN addressdb.Gemeinde g ON s.gemeinde_id = g.id
+                JOIN addressdb.Ortschaft o ON o.gemeinde_id = g.id
+                LEFT JOIN addressdb.GemeindeNetzgebiet gn ON g.id = gn.gemeinde_id
+                WHERE o.name = '" . $this->db->escape($params['city']) . "'
+                AND EXISTS (SELECT 1 FROM addressdb.Plz p WHERE p.plzstring = " . $this->db->escape($params['zip']) . " AND p.gemeinde_id = o.gemeinde_id)";
 
-        $query = "
+        $cond = !empty($params['gemeindeId'])
-            SELECT DISTINCT s.name
+            ? " AND g.id = " . intval($params['gemeindeId'])
-            FROM addressdb.Strasse s
+            : " AND gn.netzgebiet_id = " . intval($params['clusterId']);
-            JOIN addressdb.Gemeinde g ON s.gemeinde_id = g.id
-            JOIN addressdb.Ortschaft o ON o.gemeinde_id = g.id
-            LEFT JOIN addressdb.GemeindeNetzgebiet gn ON g.id = gn.gemeinde_id
-            WHERE $whereString
-            ORDER BY s.name ASC
-        ";
 
-        $res = $this->db->query($query);
+        $rows = $this->db->fetch_all_assoc($this->db->query($sql . $cond));
-        return array_column($this->db->fetch_all_assoc($res), 'name');
+
+        // Fallback: If empty result and we were using clusterId, run without the specific ID constraint
+        if (empty($rows) && empty($params['gemeindeId']))
+            $rows = $this->db->fetch_all_assoc($this->db->query($sql));
+
+        return array_column($rows, 'name');
     }
-
+    
     public function findAddresses(array $params): array
     {
         $whereClauses = [