Question

我正在尝试在我的应用程序中创建一个新的数据透视表。我想将我的users表连接到customers表。它必须是多对多的关系。我创建了一个迁移文件。它看起来像这样：

<?php

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateUsersCustomersTable extends Migration
{
/**
 * Run the migrations.
 *
 * @return void
 */
public function up()
{
    Schema::create('customer_user', function (Blueprint $table) {
        $table->integer('user_id')->unsigned()->index();
        $table->foreign('user_id')
            ->references('id')
            ->on('users')
            ->onDelete('cascade');

        $table->string('customer_fb_id')->unsigned()->index();
        $table->foreign('customer_fb_id')
            ->references('facebook_id')
            ->on('customers')
            ->onDelete('cascade');

        $table->timestamps();
    });
}

/**
 * Reverse the migrations.
 *
 * @return void
 */
public function down()
{
    Schema::drop('customer_user');
}
}

当我运行php artisan migrate时，我收到以下错误消息：

[Illuminate\Database\QueryException]
SQLSTATE[42000]: Syntax error or access violation: 
1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL 
server version for the right syntax to use near 'unsigned not null, `created_at` timestamp 
default 0 not null, `updated_at` times' at line 1 (SQL: create table `customer_user`
(`user_id` int unsigned not null, `customer_fb_id` varchar(255) unsigned not null, `created_at`
timestamp default 0 not null, `updated_at` timestamp default 0 not null)
default character set utf8 collate utf8_unicode_ci)

在users表中，ID是一个整数，在customers表中，facebook_id是一个字符串。在我看来，我正在以正确的方式做到这一点，所以我不知道我做错了什么？

提前致谢！

SQL错误多对多迁移文件Laravel 5

0 个答案: