小编M. *_*las的帖子

我是Symfony的新手,并开始做一些教程,以便完成一些事情.我正在研究Linux Mint 18机器和标准的Symfony3项目.

我想创建一个简单的数据库来玩它,但我遇到一个错误,我找不到合适的解决方案.

我的parameters.yml文件如下所示:

parameters:
   database_host: localhost
   database_port: null
   database_name: symfony
   database_user: root
   database_password: null
   mailer_transport: smtp
   mailer_host: 127.0.0.1
   mailer_user: null
   mailer_password: null
   secret: (not relevant)

我的Genus.php文件如下所示:

namespace AppBundle\Genus;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 * @ORM\Table(name="genus")
 */
class Genus
{
    /**
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     * @ORM\Column(type="integer")
     */
    private $id;
    /**
     * @ORM\Column(type="string")
     */
    private $name;

}

当我执行命令dpkg -l php*mysql时,我得到以下结果:

dpkg -l php*mysql
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name              Version       Architecture  Description …

我需要使用'mongodump'创建MongoDB数据库的转储文件.

    ubuntu-0864947@ubuntu-vm:~$ mongo
    MongoDB shell version: 3.0.1
    connecting to: test
    Server has startup warnings: 
    2015-03-30T14:26:08.806+0200 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
    2015-03-30T14:26:08.807+0200 I CONTROL  [initandlisten] 
    2015-03-30T14:26:08.807+0200 I CONTROL  [initandlisten] 
    2015-03-30T14:26:08.807+0200 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
    2015-03-30T14:26:08.808+0200 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
    2015-03-30T14:26:08.808+0200 I CONTROL  [initandlisten] 
    > mongodump
    2015-04-30T15:56:00.719+0200 E QUERY    ReferenceError: mongodump is not defined
        at (shell):1:1
    > mongodump RotterdamHaven …