php symfony 2：命名空间“Acme”不包含任何映射实体
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symfony 2 : Namespace "Acme" does not contain any mapped entities
提问by Shane Young
I am following the book and on the page http://symfony.com/doc/current/book/doctrine.html
我正在关注这本书和页面http://symfony.com/doc/current/book/doctrine.html
While following the book I am trying to work on relationship of product and category table and doctrine generate command is giving me following error.
在阅读本书时，我正在尝试研究产品和类别表的关系，并且学说生成命令给了我以下错误。
php app/console doctrine:generate:entities Acme
Generating entities for namespace "Acme"
[RuntimeException]
Namespace "Acme" does not contain any mapped entities.
doctrine:generate:entities [--path="..."] [--no-backup] name
Thx
谢谢
回答by sensorario
With
和
doctrine:generate:entity
you'll create new entity.
您将创建新实体。
And when you add some attributes by hand with
当您手动添加一些属性时
doctrine:generate:entities AcmeDemoBundle:User
you'll create all accessor (getter and setter) of the entity User of AcmeDemoBundle
您将创建 AcmeDemoBundle 的实体 User 的所有访问器（getter 和 setter）
回答by JTG
This error will also come up if your projects (only?) Entity is namespaced incorrectly. If you run the command
如果您的项目（仅？）实体命名空间不正确，也会出现此错误。如果你运行命令
$ php app/console doctrine:generate:entities MyBundle
and it produces the error
它产生错误
[RuntimeException]
Bundle "MyBundle" does not contain any mapped entities.
[RuntimeException]
捆绑包“MyBundle”不包含任何映射实体。
Check the more specific command....
检查更具体的命令....
$ php app/console doctrine:generate:entities MyBundle:MyEntity
And see if you get the error:
看看你是否收到错误：
[RuntimeException]
The autoloader expected class "MyBundle\Entity\MyEntity" to be defined in file "/path/to/MyBundle/Entity/MyEntity.php". The file was found but the class was not in it, the class name or namespace probably has a typo.
[RuntimeException]
自动加载器期望在文件“/path/to/MyBundle/Entity/MyEntity.php”中定义类“MyBundle\Entity\MyEntity”。找到了文件但类不在其中，类名或命名空间可能有拼写错误。
If so, well then, the error speaks for itself (hopefully) and the namespace/class name needs to be corrected. Hopefully that is helpful to someone.
如果是这样，那么，错误不言自明（希望如此）并且需要更正命名空间/类名。希望这对某人有帮助。
回答by AZ Angel Azcona
The solution:
解决方案：
Update symfony files:
更新 symfony 文件：
composer update
then create entities
然后创建实体
php bin/console doctrine:generate:entities BackendBundle
回答by marvin_x
Check that the PHP opening and (optional) closing tags
检查 PHP 开始和（可选）结束标记
<?php
and
和
?>
are correct in your file.
在您的文件中是正确的。
They are notincluded when you copy paste from the tutorial at http://symfony.com/doc/current/book/doctrine.html
当您从http://symfony.com/doc/current/book/doctrine.html的教程中复制粘贴时，它们不包括在内
I was stuck at the same problem. After looking at this post I started wondering why the syntax highlighting was broken and discovered that the opening and closing tags were missing. The error disappeared when the tags were included.
我被困在同样的问题上。看完这篇文章后，我开始想知道为什么语法突出显示被破坏，并发现开始和结束标记丢失了。包含标签后错误消失。
回答by aneth101
I personally had the error because I was missing the folder/directory "Entity".
我个人有错误，因为我缺少文件夹/目录“实体”。
回答by alvlp4
In book http://symfony.com/doc/current/book/doctrine.htmlentity Porduct has been manually created. You wrote code to Product.php. All information about entity fields contains in annotations.
But entity Category has been created with
在书中http://symfony.com/doc/current/book/doctrine.html实体产品已被手动创建。您将代码写入 Product.php。关于实体字段的所有信息都包含在 annotations 中。
但是实体 Category 已经创建
php app/console doctrine:generate:entity --entity="AcmeStoreBundle:Category" --fields="name:string(255)"
php app/console doctrine:generate:entity --entity="AcmeStoreBundle:Category" --fields="name:string(255)"
Automatically generated entityCaterory.php doesn't contains annotations. Symfony stored information in "Acme\StoreBundle\Resources\config\doctrine\Category.orm.yml".
That's why php app/console doctrine:mapping:infosays that you have only 1 mapped entity - Category.
自动生成的实体Caterory.php不包含 annotations。Symfony 将信息存储在“Acme\StoreBundle\Resources\config\doctrine\Category.orm.yml”中。这就是为什么php app/console doctrine:mapping:info说您只有 1 个映射实体 - 类别。
Solving
You may generate Product entity with doctrine:generate:entity
or
Manually add information about Product entity to "Acme\StoreBundle\Resources\config\doctrine\Category.orm.yml"
or
Delete "Acme\StoreBundle\Resources\config\doctrine\Category.orm.yml" and describe Category entity with annotations in Category.php
解决
您可以使用doctrine:generate:entity
或
手动将有关产品实体的信息添加到“Acme\StoreBundle\Resources\config\doctrine\Category.orm.yml”
或
删除“Acme\StoreBundle\Resources\config\doctrine\Category.orm.yml”来生成产品实体" 并在 Category.php 中用注释描述 Category 实体
回答by mukulu
One of the two things may be the problem,
这两件事之一可能是问题所在，
make sure you have a use statement at the top, that is
use Acme\StoreBundle\Entity\Product;It is not included in the example, they only displayed
use Doctrine\Common\Collections\ArrayCollection;When specifying target entity always specify full namespace if the entities are in different name spaces. example:
@ORM\OneToMany(targetEntity="Acme\StoreBundle\Entity\Product", mappedBy="category")instead of:
@ORM\OneToMany(targetEntity="Product", mappedBy="category")The second one only works if the two entities are in same namespace and that entity has been called by
usestatement above the class.
确保顶部有一个 use 语句，即
use Acme\StoreBundle\Entity\Product;它不包含在示例中，它们只显示
use Doctrine\Common\Collections\ArrayCollection;如果实体位于不同的命名空间中，则在指定目标实体时始终指定完整的命名空间。例子：
@ORM\OneToMany(targetEntity="Acme\StoreBundle\Entity\Product", mappedBy="category")代替：
@ORM\OneToMany(targetEntity="Product", mappedBy="category")第二个仅在两个实体位于同一命名空间中并且该实体已被
use类上方的语句调用时才有效。
