Question

我有以下错误。有人理解为什么？

php artisan migrate

 SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key 
was too long; max key length is 767 bytes (SQL: alter table `users` 
add unique `users_email_unique`(`email`))

create_users_table.php

Schema::create('users', function (Blueprint $table) {
    $table->increments('id');
    $table->string('name',255);
    $table->string('email',255)->unique();
    $table->string('password',255);
    $table->rememberToken();
    $table->timestamps();
});

Answer 1

你要做的就是在App\Providers\AppServiceProvider文件上编辑你的AppServiceProvider.php，并在boot方法中设置一个默认的字符串长度：

use Illuminate\Support\Facades\Schema;

public function boot()
{
    Schema::defaultStringLength(191);
}

然后手动删除数据库，然后composer dump-autoload和php artisan migrate

Answer 2

修改AppServiceProvider.php文件，您会在app/Providers/AppServiceProvider.php

中找到此文件

use Illuminate\Support\Facades\Schema;

public function boot()
{
     Schema::defaultStringLength(191);
}

然后运行

composer update

终端上的

。然后尝试迁移您的脚本，这将解决您的问题。

Answer 3

感谢所有留言

解决了下一个代码：

 in config/database.php in mysql section


'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
 and replace them with with

'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',

Php工匠迁移失败了Laravel

3 个答案: