laravel 迁移指定的键太长；最大密钥长度为 767 字节

Question

我正在尝试迁移 laravel 迁移，但出现错误：

Migrating: 2014_10_12_100000_create_password_resets_table

   Illuminate\Database\QueryException  : SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes (SQL: alter table `password_
resets` add index `password_resets_email_index`(`email`))

我的代码是：

if (!Schema::hasTable('password_resets')) {
            Schema::create('password_resets', function (Blueprint $table) {
                $table->string('email')->index();
                $table->string('token');
                $table->timestamp('created_at')->nullable();
            });
        }

Answer 1

您可以手动设置字符串长度

$table->string('name', 191); // You can put any number in exchange of 191

别的

把这个放在 APP -> Providers -> AppServiceProvider

use Illuminate\Support\Facades\Schema;

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