Added basic field editing

update_data.php

@@ -0,0 +1,52 @@
+<?php
+include("functions.php");
+require_db_auth();
+
+$conn = connectDb();
+
+// Ensure required parameters are received
+if (!isset($_POST['id'], $_POST['column'], $_POST['new_value'], $_POST['old_value'])) {
+    die(json_encode(['error' => 'Invalid request']));
+}
+
+$id = intval($_POST['id']); // Sanitize ID
+$column = $_POST['column'];
+$old_value = $_POST['old_value'];
+$new_value = $_POST['new_value'];
+
+// Allowed columns for security (prevent SQL injection)
+$allowed_columns = [
+    'ac_reg', 'ac_type', 'ac_call', 'captain',
+    'in_from', 'pob_in', 'eta', 'fuel',
+    'pob_out', 'out_to', 'etd', 'email', 'phone', 'notes'
+];
+
+if (!in_array($column, $allowed_columns)) {
+    die(json_encode(['error' => 'Invalid column']));
+}
+
+$stmt = $conn->prepare("UPDATE submitted SET `$column` = ? WHERE id = ?");
+if (!$stmt) {
+    die(json_encode(['error' => 'Prepare statement failed']));
+}
+
+$stmt->bind_param("si", $new_value, $id);
+$success = $stmt->execute();
+$stmt->close();
+
+// If update successful, log the change
+if ($success) {
+    $message = $column . " changed from " . $old_value . " to " . $new_value;
+    logJournal($conn, $id, $message);
+}
+
+$conn->close();
+
+// Return JSON response
+echo json_encode([
+    'success' => $success,
+    'column' => $column,
+    'old_value' => $old_value,
+    'new_value' => $new_value
+]);
+?>