php-flarum/migrations/2015_02_24_000000_create_activity_table.php

<?php

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

class CreateActivityTable extends Migration
{

    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('activity', function (Blueprint $table) {
        
            $table->increments('id');
            $table->integer('user_id')->unsigned();
            $table->integer('sender_id')->unsigned()->nullable();
            $table->string('type', 100);
            $table->binary('data')->nullable();
            $table->dateTime('time');
        });
    }

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