liwo/database/migrations/2022_10_13_085114_create_files_table.php

<?php

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

class CreateFilesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('files', function (Blueprint $table) {
            $table->id();
            $table->unsignedBigInteger('user_id');
            $table->unsignedBigInteger('business_id');
            $table->unsignedBigInteger('project_id');
            $table->unsignedBigInteger('attached_to_id')->nullable();
            $table->integer('attached_to_table')->nullable();
            $table->char('disk',191);
            $table->char('original_name',191);
            $table->char('name',191);
            $table->char('extension',4);
            $table->string('mime');
            $table->string('group',255);
            $table->char('size',191);
            $table->text('description')->nullable();
            $table->timestamp('created_at')->nullable();
            $table->timestamp('updated_at')->useCurrent();
        });
    }

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