fixed fields

public/userarea/update_fixed_field.php

@@ -0,0 +1,35 @@
+<?php
+header('Content-Type: application/json');
+
+require_once(__DIR__ . '/include/headscript.php');
+
+$db = DBHandlerSelect::getInstance();
+$pdo = $db->getConnection();
+
+$input = json_decode(file_get_contents('php://input'), true);
+
+$id    = (int)($input['id'] ?? 0);
+$field = (string)($input['field'] ?? '');
+$value = $input['value'] ?? null;
+
+if ($id <= 0) {
+    echo json_encode(['success' => false, 'message' => 'Invalid id']);
+    exit;
+}
+
+$allowed = ['default_value', 'is_visible_import', 'is_required'];
+if (!in_array($field, $allowed, true)) {
+    echo json_encode(['success' => false, 'message' => 'Invalid field']);
+    exit;
+}
+
+if ($field === 'is_visible_import' || $field === 'is_required') {
+    $value = ((int)$value === 1) ? 1 : 0;
+}
+
+
+$sql = "UPDATE template_fixed_mapping SET {$field} = :val WHERE id = :id";
+$stmt = $pdo->prepare($sql);
+$ok = $stmt->execute([':val' => $value, ':id' => $id]);
+
+echo json_encode(['success' => (bool)$ok]);