本文介绍了Symfony2中的getEntityManager()和getDoctrine()的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

这两个语句之间是否有任何区别:

  $ this-> getDoctrine()-> getEntityManager() -> getRepository(); 

$ this-> getDoctrine()-> getRepository();

差异是否与我错过的任何OOP概念有关?

解决方案

一般而言,没有区别,因为

  $ this-> getDoctrine()-> getRepository(); 

只是



<$ p $的助手p> $ this-> getDoctrine()-> getEntityManager()-> getRepository();

您可以有多个实体管理器,然后从一个实体管理器中获取存储库会略有不同:

  $ this-> getDoctrine()-> getRepository($ entityName,$ enityManagerName); 
$ this-> getDoctrine()-> getEntityManager($ entityManagerName)-> getRepository($ entityName);

但同样,您得到的结果也没有差异。



在所有其他条件都相同的情况下,我会选择最短的东西。


Is there any difference between these two statements:

$this->getDoctrine()->getEntityManager()->getRepository();

$this->getDoctrine()->getRepository();

Does the difference relate to any OOP concept I am missing out?

解决方案

In general, no difference, since

$this->getDoctrine()->getRepository();

is just a helper for

$this->getDoctrine()->getEntityManager()->getRepository();

You can have several entity managers, and then there will be a slight difference in getting a repository from one:

$this->getDoctrine()->getRepository($entityName, $enityManagerName);
$this->getDoctrine()->getEntityManager($entityManagerName)->getRepository($entityName);

But again, no difference in the result you'll get.

All other things being equal, I'd go with the shortest one.

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09-12 12:21