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implemented incremental schema migration for questionnaire, added categoryKey column if missing, and improved error handling in questionnaire retrieval

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This commit is contained in:
Tom Hempel
2026-05-27 20:03:47 +02:00
parent 36b6d63266
commit 24080bb8b9
2 changed files with 83 additions and 35 deletions
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80
db_init.php
View File

@ -8,6 +8,54 @@ define('QDB_LOCK', __DIR__ . '/uploads/.qdb_lock');
define('QDB_SCHEMA', __DIR__ . '/schema.sql');
define('QDB_VERSION', 4);
function qdb_column_exists(PDO $pdo, string $table, string $column): bool {
$stmt = $pdo->query('PRAGMA table_info(' . $table . ')');
foreach ($stmt->fetchAll(PDO::FETCH_ASSOC) as $col) {
if (($col['name'] ?? '') === $column) {
return true;
}
}
return false;
}
/**
* Apply incremental schema fixes. Returns true if the temp DB was modified.
*/
function qdb_apply_migrations(PDO $pdo, string $schemaSql): bool {
$changed = false;
if (!qdb_column_exists($pdo, 'questionnaire', 'categoryKey')) {
$pdo->exec("ALTER TABLE questionnaire ADD COLUMN categoryKey TEXT NOT NULL DEFAULT ''");
$changed = true;
}
$currentVersion = (int)$pdo->query('PRAGMA user_version')->fetchColumn();
if ($currentVersion < QDB_VERSION) {
$pdo->exec('PRAGMA foreign_keys = OFF;');
$pdo->exec($schemaSql);
if (!qdb_column_exists($pdo, 'questionnaire', 'categoryKey')) {
$pdo->exec("ALTER TABLE questionnaire ADD COLUMN categoryKey TEXT NOT NULL DEFAULT ''");
}
$pdo->exec('PRAGMA user_version = ' . QDB_VERSION . ';');
$pdo->exec('PRAGMA foreign_keys = ON;');
$changed = true;
}
return $changed;
}
function qdb_acquire_lock() {
$lockFp = fopen(QDB_LOCK, 'c');
if ($lockFp === false) {
throw new Exception('Could not open lock file');
}
if (!flock($lockFp, LOCK_EX)) {
fclose($lockFp);
throw new Exception('Could not acquire lock');
}
return $lockFp;
}
/**
* Decrypt the master DB file into a temp SQLite file, or create a fresh one
* from schema.sql if no DB exists yet.
@ -67,26 +115,20 @@ function qdb_open(bool $writable = false): array {
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$pdo->exec("PRAGMA foreign_keys = ON;");
// Schema upgrade: apply CREATE TABLE IF NOT EXISTS for any missing tables
$currentVersion = (int)$pdo->query("PRAGMA user_version")->fetchColumn();
if ($currentVersion < QDB_VERSION) {
$pdo->exec("PRAGMA foreign_keys = OFF;");
$pdo->exec($sql);
if ($currentVersion < 4) {
$cols = $pdo->query("PRAGMA table_info(questionnaire)")->fetchAll(PDO::FETCH_ASSOC);
$hasCategory = false;
foreach ($cols as $col) {
if (($col['name'] ?? '') === 'categoryKey') {
$hasCategory = true;
break;
$schemaChanged = qdb_apply_migrations($pdo, $sql);
// Read-only opens discard the temp file; persist one-off migrations to the master DB.
if ($schemaChanged && !$writable) {
$migrateLock = qdb_acquire_lock();
try {
qdb_save($tmpDb, $migrateLock);
} catch (Throwable $e) {
@unlink($tmpDb);
flock($migrateLock, LOCK_UN);
fclose($migrateLock);
throw $e;
}
}
if (!$hasCategory) {
$pdo->exec("ALTER TABLE questionnaire ADD COLUMN categoryKey TEXT NOT NULL DEFAULT ''");
}
}
$pdo->exec("PRAGMA user_version = " . QDB_VERSION . ";");
$pdo->exec("PRAGMA foreign_keys = ON;");
return qdb_open(false);
}
return [$pdo, $tmpDb, $lockFp];

6
handlers/questionnaires.php
View File

@ -6,6 +6,7 @@ switch ($method) {
case 'GET':
[$pdo, $tmpDb, $lockFp] = qdb_open(false);
try {
$rows = $pdo->query("
SELECT q.questionnaireID, q.name, q.version, q.state,
q.orderIndex, q.showPoints, q.conditionJson, q.categoryKey,
@ -23,6 +24,11 @@ case 'GET':
unset($r);
qdb_discard($tmpDb, $lockFp);
json_success(['questionnaires' => $rows]);
} catch (Throwable $e) {
qdb_discard($tmpDb, $lockFp);
error_log('questionnaires GET: ' . $e->getMessage());
json_error('SERVER_ERROR', 'Server error', 500);
}
break;
case 'POST':