pixelfed/database/migrations/2018_10_25_030944_update_profile_table.php

<?php

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

class UpdateProfileTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('profiles', function (Blueprint $table) {
            $table->string('key_id')->nullable()->unique()->index()->after('outbox_url');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('profiles', function (Blueprint $table) {
            $table->dropColumn('key_id');
        });
    }
}