php - 重复的列名 Laravel

Question

我在Laravel中创建迁移，当我运行命令时php artisan migrate，命令给我以下错误

重复的列名'user_id'（'id'int unsigned not null auto_increment 主键，'user_id'int unsigned not null，'user_id'int not null，'order_id_'int unsigned not null，'order_id'int not null）默认字符设置 utf8 整理 utf8_unicode_ci)

这是我的迁移：

<?php

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

class CreateUserOrrderTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
         Schema::create('user_orrder', function (Blueprint $table) {

            $table->increments('id');

            $table->integer('user_id')->unsigned();
            $table->integer('user_id')->references('id')->on('users');

            $table->integer('order_id')->unsigned();
            $table->integer('order_id')->references('id')->on('orders');
        });
    }

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

Answer 1

您的代码应为：

$table->foreign('user_id')->references('id')->on('users');

代替$table->integer('user_id')->references('id')->on('users');

阅读文档。