<?php

namespace Qs;

use Qs_Array;

abstract class AbstractModel implements ModelInterface
{
    protected $filter = [];

    public function getFilter($field = null, $default = null)
    {
        return Qs_Array::get($this->filter, $field, $default);
    }

    public function setFilter($filter, $value = null)
    {
        if (is_array($filter)) {
            $this->filter = $filter;
        } elseif (is_string($filter)) {
            $this->filter[$filter] = $value;
        } else {
            trigger_error('Invalid filter argument type');
        }
        return $this;
    }
}