如何在 Symfony 4 中通过学说创建数据库 table？

Question

在 Symfony 中我创建了一个实体：

src/Entity/User.php

<?php

namespace App\Entity;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Security\Core\User\UserInterface;

/**
 * @ORM\Table(name="app_users")
 * @ORM\Entity(repositoryClass="App\Repository\UserRepository")
 */
class User implements UserInterface, \Serializable
{
    /**
     * @ORM\Column(type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @ORM\Column(type="string", length=25, unique=true)
     */
    private $username;

    /**
     * @ORM\Column(type="string", length=64)
     */
    private $password;

    /**
     * @ORM\Column(type="string", length=254, unique=true)
     */
    private $email;

    /**
     * @ORM\Column(name="is_active", type="boolean")
     */
    private $isActive;

    public function __construct()
    {
        $this->isActive = true;
        // may not be needed, see section on salt below
        // $this->salt = md5(uniqid('', true));
    }

    public function getUsername()
    {
        return $this->username;
    }

    public function getSalt()
    {
        // you *may* need a real salt depending on your encoder
        // see section on salt below
        return null;
    }

    public function getPassword()
    {
        return $this->password;
    }

    public function getRoles()
    {
        return array('ROLE_USER');
    }

    public function eraseCredentials()
    {
    }

    /** @see \Serializable::serialize() */
    public function serialize()
    {
        return serialize(array(
            $this->id,
            $this->username,
            $this->password,
            // see section on salt below
            // $this->salt,
        ));
    }

    /** @see \Serializable::unserialize() */
    public function unserialize($serialized)
    {
        list (
            $this->id,
            $this->username,
            $this->password,
            // see section on salt below
            // $this->salt
        ) = unserialize($serialized, ['allowed_classes' => false]);
    }
}

之后我想通过终端创建数据库table：

 php bin/console doctrine:migrations:diff
 php bin/console doctrine:migrations:migrate

但是我收到很多错误信息:

Migration 20180628135528 failed during Execution. Error An exception occurred while executing 'CREATE TAB LE app_users (id INT AUTO_INCREMENT NOT NULL, username VARCHAR(25) NOT NULL, password VARCHAR(64) NOT NUL L, email VARCHAR(254) NOT NULL, is_active TINYINT(1) NOT NULL, UNIQUE INDEX UNIQ_C2502824F85E0677 (userna me), UNIQUE INDEX UNIQ_C2502824E7927C74 (email), PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8mb4 COLLATE u tf8mb4_unicode_ci ENGINE = InnoDB':

SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes

In AbstractMySQLDriver.php line 125:

An exception occurred while executing 'CREATE TABLE app_users (id INT AUTO_INCREMENT NOT NULL, usern ame VARCHAR(25) NOT NULL, password VARCHAR(64) NOT NULL, email VARCHAR(254) NOT NULL, is_active TINY INT(1) NOT NULL, UNIQUE INDEX UNIQ_C2502824F85E0677 (username), UNIQUE INDEX UNIQ_C2502824E7927C74 ( email), PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci ENGINE = InnoDB':

SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length i s 767 bytes

In PDOConnection.php line 109:

SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length i s 767 bytes

In PDOConnection.php line 107:

SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length i s 767 bytes

Answer 1

/**
 * @ORM\Column(type="string", length=254, unique=true)
 */
private $email;

更改为最大长度 191（对于电子邮件来说应该足够了...）

/**
 * @ORM\Column(type="string", length=191, unique=true)
 */
private $email;

或者改变你的存储引擎...

如何在 Symfony 4 中通过学说创建数据库 table？

How can I create a database table via doctrine in Symfony 4?

mysql

user-interface

entity

doctrine

symfony