自己亲自做的 migration 例子 有大用

<?php

use Illuminate\Database\Schema\Blueprint;

use Illuminate\Database\Migrations\Migration;



class CreateArticleArticleTypeTable extends Migration

{

    /**

     * Run the migrations.

     *

     * @return void

     */

    public function up()

    {

        Schema::create('article_article_type', function (Blueprint $table) {

            $table->integer('article_id')->unsigned();;

            $table->integer('article_type_id')->unsigned();;

            $table->foreign('article_id')->references('article_id')->on('articles')->onDelete('cascade');

            $table->foreign('article_type_id')->references('article_type_id')->on('article_types')->onDelete('cascade');

            $table->primary(['article_id','article_type_id']);

        });

    }



    /**

     * Reverse the migrations.

     *

     * @return void

     */

    public function down()

    {

        Schema::drop('article_article_type');

    }

}