fixed matrici

public/userarea/get_matrice_lines.php

@@ -0,0 +1,36 @@
+<?php
+include('include/headscript.php');
+
+header('Content-Type: application/json; charset=utf-8');
+
+try {
+    $idmatrice = (int)($_GET['id'] ?? 0);
+    if ($idmatrice <= 0) {
+        echo json_encode(['success' => false, 'message' => 'Invalid id']);
+        exit;
+    }
+
+    $db = DBHandlerSelect::getInstance();
+    $pdo = $db->getConnection();
+
+    // tutte le linee (attive + inattive se vuoi: qui prendo tutte)
+    $stmt = $pdo->query("
+        SELECT id, line_number, name
+        FROM production_lines
+        ORDER BY line_number ASC
+    ");
+    $lines = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    // linee già associate
+    $stmt = $pdo->prepare("SELECT idlinea FROM matrici_lines WHERE idmatrice = ?");
+    $stmt->execute([$idmatrice]);
+    $selected_ids = $stmt->fetchAll(PDO::FETCH_COLUMN);
+
+    echo json_encode([
+        'success' => true,
+        'lines' => $lines,
+        'selected_ids' => $selected_ids
+    ]);
+} catch (Throwable $e) {
+    echo json_encode(['success' => false, 'message' => 'Server error']);
+}