Symfony2的＆Doctrine2 PDOException沒有說明

Question

我想利用這個代碼，它的flush（）沒有任何異常的消息打破：

1. at PDOStatement ->execute (null) 
in ../vendor/doctrine-dbal/lib/Doctrine/DBAL/Statement.php at line 131  
2. at Statement ->execute() 
in ../vendor/doctrine/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php at line 237  
3. at BasicEntityPersister ->executeInserts() 
in ../vendor/doctrine/lib/Doctrine/ORM/UnitOfWork.php at line 726  
4. at UnitOfWork ->executeInserts (object(ClassMetadata)) 
in ../vendor/doctrine/lib/Doctrine/ORM/UnitOfWork.php at line 292  
5. at UnitOfWork ->commit() 
in ../vendor/doctrine/lib/Doctrine/ORM/EntityManager.php at line 334  
6. at EntityManager ->flush() 
in ../src/Tools/TFIBundle/Model/CSVImport.php at line 136  
7. at CSVImport ->addCategory ('fundusz obligacji') 
in ../src/Tools/TFIBundle/Model/CSVImport.php at line 114 

addCategory（）方法如下：

public function addCategory($categoryName) 
{ 
    $category = new Category(); 
    $category->setName($categoryName); 

    $this->em->persist($category); 
    $this->em->flush(); 
    $this->counter['category']++; 

    return $category; 
} 

任何想法哪裏不對？或者如何在symfony2中獲得PDOException消息？

Answer 1

我剛剛在幾秒鐘前遇到同樣的問題。當我進入生產模式並關閉會話時它已經修復。它看起來像開發模式有會話的問題，當你做一些事情，如在會話仍然活着的時候，用很多更改替換整個文件夾。

嘗試清除會話，它可能會工作。