Using PHPmig migrations with Eloquent schema builder

CreateUsersTable.php

<?php

use Phpmig\Migration\Migration;

class CreateUsersTable extends Migration
{
    protected $tableName;

    /* @var \Illuminate\Database\Schema\Builder $schema */
    protected $schema;

    public function init()
    {
        $this->tableName = 'users';
        $this->schema = $this->get('db')->schema();
    }

    /**
     * Do the migration
     */
    public function up()
    {
        /* @var \Illuminate\Database\Schema\Blueprint $table */
        $this->schema->create($this->tableName, function ($table)
        {
            $table->increments('id');
            $table->string('name');
            $table->integer('age');
            $table->dateTime('dob')->nullable();
            $table->integer('active')->default(0);
            $table->integer('created_by');
            $table->integer('updated_by')->nullable();
            $table->timestamps();
            $table->softDeletes();
        });
    }

    /**
     * Undo the migration
     */
    public function down()
    {
        $this->schema->drop($this->tableName);
    }
}