added additional field in parts template e layout

public/userarea/load_parts.php

@@ -14,11 +14,57 @@ if (!$iddatadb) {
 }
 
 try {
-    $stmt = $pdo->prepare("SELECT id, iddatadb, part_number, part_description, idmatrice, note, dateexpiry FROM identification_parts WHERE iddatadb = :iddatadb ORDER BY part_number ASC");
-    $stmt->execute([':iddatadb' => $iddatadb]);
+    // 1) prendo templateid da datadb
+    $stmtTpl = $pdo->prepare("SELECT templateid FROM datadb WHERE iddatadb = :iddatadb LIMIT 1");
+    $stmtTpl->execute([':iddatadb' => $iddatadb]);
+    $templateid = $stmtTpl->fetchColumn();
+
+    // 2) prendo (max 1) field_id visibile in parts
+    $extraFieldId = null;
+    if ($templateid) {
+        $stmtEF = $pdo->prepare("SELECT field_id FROM template_mapping WHERE template_id = :templateid AND is_visible_parts = 1 ORDER BY id ASC LIMIT 1");
+        $stmtEF->execute([':templateid' => $templateid]);
+        $extraFieldId = $stmtEF->fetchColumn();
+        if ($extraFieldId !== false) $extraFieldId = (int)$extraFieldId;
+        else $extraFieldId = null;
+    }
+
+    // 3) carico parts + join su tabella figlia
+    if ($extraFieldId) {
+        $stmt = $pdo->prepare("
+            SELECT 
+                p.id, p.iddatadb, p.part_number, p.part_description, p.idmatrice, p.note, p.dateexpiry,
+                cf.value_id AS extra_value_id,
+                cf.value_text AS extra_value_text
+            FROM identification_parts p
+            LEFT JOIN identification_parts_customfields cf
+                ON cf.part_id = p.id AND cf.field_id = :extraFieldId
+            WHERE p.iddatadb = :iddatadb
+            ORDER BY p.part_number ASC
+        ");
+        $stmt->execute([
+            ':iddatadb' => $iddatadb,
+            ':extraFieldId' => $extraFieldId
+        ]);
+    } else {
+        $stmt = $pdo->prepare("
+            SELECT id, iddatadb, part_number, part_description, idmatrice, note, dateexpiry,
+                   NULL AS extra_value_id, NULL AS extra_value_text
+            FROM identification_parts
+            WHERE iddatadb = :iddatadb
+            ORDER BY part_number ASC
+        ");
+        $stmt->execute([':iddatadb' => $iddatadb]);
+    }
+
     $parts = $stmt->fetchAll(PDO::FETCH_ASSOC);
 
-    echo json_encode(['success' => true, 'parts' => $parts]);
+    echo json_encode([
+        'success' => true,
+        'parts' => $parts,
+        'extra_field_id' => $extraFieldId,
+        'debug_sql' => ($extraFieldId ? 'WITH_CF_JOIN' : 'NO_CF')
+    ]);
 } catch (PDOException $e) {
     echo json_encode(['success' => false, 'message' => 'Errore nel caricamento: ' . $e->getMessage()]);
 }