images/database/migrations/0000_00_00_000002_create_associate_images.php

<?php

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

class CreateAssociateImages extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('associate_images', function (Blueprint $table) {
            $table->integer('id', true);
            $table->integer('image_id');
            $table->string('relation_type');
            $table->integer('relation_id');
            $table->integer('position')->nullable();

            $table->foreign('image_id')->references('id')->on('images')->onDelete('cascade');

        });
    }

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

    }
}