在Laravel 5.4上使用php artisan make:auth迁移错误
[Illuminate\Database\QueryException] SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes (SQL: alter tabl e users add unique users_email_unique(email))
[PDOException] SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes
如前所述,我们在App/Providers中添加到AppServiceProvider.php
use Illuminate\Support\Facades\Schema; // add this
/**
* Bootstrap any application services.
*
* @return void
*/
public function boot()
{
Schema::defaultStringLength(191); // also this line
}
你可以在下面的链接中看到更多细节(搜索“索引长度& MySQL / MariaDB”)
https://laravel.com/docs/5.5/migrations
BUT WELL THAT's not what I published all about! the thing is even when doing the above you will likely to get another error (that's when you run php artisan migrate command and because of the problem of the length, the operation will likely stuck in the middle. solution is below, and the user table is likely created without the rest or not totally correctly)
we need to roll back. the default roll back will not work. because the operation of migration didn't like finish. you need to delete the new created tables in the database manually.
我们可以这样做使用修补器如下所示:
L:\todos> php artisan tinker
Psy Shell v0.8.15 (PHP 7.1.10 — cli) by Justin Hileman
>>> Schema::drop('users')
=> null
我自己有一个问题与用户表。
之后你就可以开始了
PHP artisan migrate:回滚
PHP工匠迁移
我不知道为什么上面的解和官方的解是相加的
Schema::defaultStringLength(191);
在AppServiceProvider中不适合我。
工作的是编辑config文件夹中的database.php文件。
只是编辑
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
to
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
它应该可以工作,尽管你将无法存储扩展的多字节字符,如表情符号。
这是一个丑陋的黑客,如果你想存储字符串在非英语语言,表情符号
我用Laravel 5.7做的。
不要忘记停止并再次启动服务器。
模式:defaultStringLength (191);将默认定义所有字符串191的长度,这可能会破坏您的数据库。你不能走这条路。
只需在数据库迁移类中定义任何特定列的长度。例如,我在CreateUsersTable类中定义了“name”,“username”和“email”,如下所示:
public function up()
{
Schema::create('users', function (Blueprint $table) {
$table->increments('id');
$table->string('name', 191);
$table->string('username', 30)->unique();
$table->string('email', 191)->unique();
$table->string('password');
$table->rememberToken();
$table->timestamps();
});
}