/**
* Processes AJAX requests for upgrades.
* The updater starts with the passed $version and goes on until the
* last one.
*
* The response is in the following format:
* <percent-complete>|<next-action>|<status-message>
*
* @static
* @param string $version
* @return string
*/
public static function update($action)
{
// Get the update versions and current scope
$versions = Config::get('schema.update');
$versionNames = array_keys($versions);
// Initialize everything
if (!Session::has('setup.updating')) {
Session::put('setup.updating', TRUE);
Session::forget('setup.messages');
return "5|{$action}|" . sprintf(Lang::get('setup.process_version'), $action);
} else {
if ($action == '~complete') {
// Set the final stage
Session::put('setup.stage', 3);
// Update the version number in the database
Site::config('general', array('version' => Config::get('app.version')));
// Flush the cache
Cache::flush();
// All done!
return "100||" . Lang::get('setup.update_complete');
} else {
if (array_key_exists($action, $versions)) {
try {
// In case the exception is not caught
static::setHandler('mainProcess');
// Scope is the current version being processed
$scope = $versions[$action];
// Create new tables
if (isset($scope['newTables'])) {
foreach ($scope['newTables'] as $tableName => $schema) {
// Drop the table
Schema::dropIfExists($tableName);
// Generate schema and create the table
Schema::create($tableName, function ($table) use($schema) {
Setup::schema($table, $schema);
});
}
}
// Update existing tables
if (isset($scope['modifyTables'])) {
foreach ($scope['modifyTables'] as $tableName => $schema) {
// Generate schema and modify the table
Schema::table($tableName, function ($table) use($schema) {
Setup::schema($table, $schema);
});
}
}
// Run the closure for this version
if (isset($scope['closure'])) {
call_user_func($scope['closure']);
}
// Output the next action in queue
return Setup::nextAction($action, $versionNames, 'setup.process_version');
} catch (Exception $e) {
Session::put('setup.error', $e->getMessage());
return '-1||' . Lang::get('setup.error_occurred');
}
}
}
}
}