fixed migration

db/migrations/20260915073019_make_pause_reason_nullable.php

@@ -8,17 +8,40 @@ final class MakePauseReasonNullable extends AbstractMigration
 {
     public function up(): void
     {
-        // La FK su reason_id è già stata rimossa e la colonna è già nullable.
-        // Garantisco lo stato finale in modo idempotente, senza ricreare la FK.
-        $this->table('production_pauses')
-            ->changeColumn('reason_id', 'integer', ['null' => true])
-            ->update();
+        $table = $this->table('production_pauses');
+
+        // 1. rimuovo la FK che blocca la modifica della colonna
+        $table->dropForeignKey('reason_id')->update();
+
+        // 2. rendo la colonna nullable, mantenendo il tipo reale (tinyint unsigned)
+        $table->changeColumn('reason_id', 'integer', [
+            'limit'  => \Phinx\Db\Adapter\MysqlAdapter::INT_TINY,
+            'signed' => false,
+            'null'   => true,
+        ])->update();
+
+        // 3. ricreo la FK
+        $table->addForeignKey('reason_id', 'pause_reasons', 'id', [
+            'delete' => 'SET_NULL',
+            'update' => 'NO_ACTION',
+        ])->update();
     }
 
     public function down(): void
     {
-        $this->table('production_pauses')
-            ->changeColumn('reason_id', 'integer', ['null' => false])
-            ->update();
+        $table = $this->table('production_pauses');
+
+        $table->dropForeignKey('reason_id')->update();
+
+        $table->changeColumn('reason_id', 'integer', [
+            'limit'  => \Phinx\Db\Adapter\MysqlAdapter::INT_TINY,
+            'signed' => false,
+            'null'   => false,
+        ])->update();
+
+        $table->addForeignKey('reason_id', 'pause_reasons', 'id', [
+            'delete' => 'NO_ACTION',
+            'update' => 'NO_ACTION',
+        ])->update();
     }
 }