Fix demos readonly rollback with nested transactions

demos/init-db.php

@@ -36,13 +36,16 @@ protected function isAllowDbModifications(): bool
 
     public function atomic(\Closure $fx)
     {
-        $eRollback = new \Exception('Prevent modification');
+        $connection = $this->getModel(true)->getPersistence()->getConnection(); // @phpstan-ignore-line
+        $eRollback = !$connection->inTransaction()
+            ? new \Exception('Prevent modification')
+            : null; // TODO replace with atk4/data Connection before commit hook
         $res = null;
         try {
             parent::atomic(function () use ($fx, $eRollback, &$res) {
                 $res = $fx();
 
-                if (!$this->isAllowDbModifications()) {
+                if ($eRollback !== null && !$this->isAllowDbModifications()) {
                     throw $eRollback;
                 }
             });

phpstan.neon.dist

@@ -16,12 +16,6 @@ parameters:
         - '~^Only booleans are allowed in .+, .+ given( on the (left|right) side)?\.~'
         - '~^Variable (static )?(property access|method call) on .+\.~'
 
-        # https://github.com/phpstan/phpstan/issues/9951
-        -
-            path: 'src/Table/Column/FilterModel/Type*.php'
-            message: '~^Parameter (#2 \$operator|#3 \$value) of method Atk4\\Data\\Model::addCondition\(\) expects (Atk4\\Data\\Persistence\\Sql\\Expressionable\|string, bool|string, DateTime) given\.$~'
-            count: 5
-
         # TODO these rules are generated, this ignores should be fixed in the code
         # for level = 2
         -

src/Form/Control/Multiline.php

@@ -340,7 +340,9 @@ public function saveRows(): self
         $currentIds = array_column($model->export(), $model->idField);
 
         foreach ($this->rowData as $row) {
-            $entity = $row[$model->idField] !== null ? $model->load($row[$model->idField]) : $model->createEntity();
+            $entity = $row[$model->idField] !== null
+                ? $model->load($row[$model->idField])
+                : $model->createEntity();
             foreach ($row as $fieldName => $value) {
                 if ($fieldName === '__atkml') {
                     continue;
@@ -350,9 +352,12 @@ public function saveRows(): self
                     $entity->set($fieldName, $value);
                 }
             }
-            $id = $entity->save()->getId();
 
-            $k = array_search($id, $currentIds, true);
+            if (!$entity->isLoaded() || $entity->getDirtyRef() !== []) {
+                $entity->save();
+            }
+
+            $k = array_search($entity->getId(), $currentIds, true);
             if ($k !== false) {
                 unset($currentIds[$k]);
             }