标签:实现 span boot art nbsp spec byte 而不是 print
Laravel 5.4 migrate报错:Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes (SQL: alter table `users` add unique `us ers_email_unique`(`email`))
public function up() { Schema::create(‘users‘, function (Blueprint $table) { $table->increments(‘id‘); $table->string(‘name‘); $table->string(‘email‘)->unique(); $table->string(‘password‘); $table->rememberToken(); $table->timestamps(); }); }
以上是user表的migartion,可以看出name字段并没有声明长度,laravel默认了1071,而报错中看出数据库设置了最大是767,所以就报错了
Laravel 5.4默认使用utf8mb4
字符编码,而不是之前的utf8
编码。mb4的最大字符长度为4个字节,解决方法是:
手动配置迁移命令migrate生成的默认字符串长度,在AppServiceProvider中调用Schema::defaultStringLength方法来实现配置:
use Illuminate\Support\Facades\Schema; /** * Bootstrap any application services. * * @return void */ public function boot() { // 767/4 Schema::defaultStringLength(191); }
标签:实现 span boot art nbsp spec byte 而不是 print
原文地址:http://www.cnblogs.com/lindoubao/p/7231400.html