<?php
namespace ProVM\Money;

use ProVM\Common\Alias\Model;
use ProVM\Common\Define\Model\DateTime;

/**
 * @property Currency $currency_id
 * @property \DateTime $date_time
 * @property double $value
 * @property Currency $base_id
 */
class Value {
  use DateTime;

  public static $_table = 'values';

  protected $currency;
  public function currency(): ?Currency {
    if ($this->currency === null) {
      $this->currency = $this->childOf(Currency::class, [Model::SELF_KEY => 'currency_id']);
    }
    return $this->currency;
  }
  protected $base;
  public function base(): ?Currency {
    if ($this->base === null) {
      $this->base = $this->childOf(Currency::class, [Model::SELF_KEY => 'base_id']);
    }
    return $this->base;
  }
}