GalleryCreator.php

<?php
class GalleryCreator
{
    /**
     * @var string
     */
    protected $sType;
    /**
     * @var State model
     */
    protected $oModel;
    /**
     * @var int
     */
    protected $iProp;

    /**
     * Set the type on the class
     * Also make the property
     *
     * @param $sType
     * @return $this
     */
    public function setType($sType)
    {
        $this->sType = $sType;
        $this->iProp = "i{$this->sType}";

        return $this;
    }

    /**
     * Set the model on the class
     *
     * @param $oModel
     * @throws InvalidTypeException
     * @return $this
     */
    public function setClass($oModel)
    {
        $this->oModel = $oModel;

        if (is_null($this->oModel->{$this->iProp})) throw new InvalidTypeException('Type not set on the model');

        return $this;
    }

    /**
     * Create the gallery if necessary
     * Set on the model the galleryId
     */
    public function create()
    {
        // 1. Check if model already has a gallery of that type
        $oGallery = Query::first('GalleryGallery', array(array('iId', '=', $this->oModel->{$this->iProp})));

        // 1b. If not make it
        if (empty($oGallery)) $oGallery = new GalleryGallery();

        // Setting properties
        $oGallery->sNameLngFr = "{$this->sType}_" . get_class($this->oModel) . "_{$this->oModel->sNameLngFr}";
        $oGallery->iValidate = State::PROD;
        $oGallery->save();

        // Set the galleryId on the model
        $this->oModel->{$this->iProp} = $oGallery->iId;
        $this->oModel->save();
    }
}