InSetViewHelper.php

gistfile1.txt

{namespace seminar=NIM\Nimseminar\ViewHelpers}

<f:comment>
    <!--
        Auflistung von Seminaren
    -->
</f:comment>


    <ul class="ns-list-eventList">
      <f:if condition="{events}">
        <f:then>
          <f:for each="{events}" as="parent">
              <f:if condition="{seminar:fe.inSet(object: parent)}">
                  <f:else> (... template stuff...) </f:else>
                </f:if>
          </f:for>
        </f:then>

      </f:if>
    </ul>

InSetViewHelper.php

<?php
namespace NIM\Nimseminar\ViewHelpers\Fe;
use NIM\Nimseminar\NIMGeneral;
use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;

/**
 * Created by thephpjo.
 * Date: 28.10.14
 * Time: 16:56
 */

/**
 * Class IsInListViewHelper
 *
 * Checks if an Element is already in the list. returns true, if it is, returns false and adds it to the list, if not
 * Usage:
 *
 *  <f:for each="{events}" as="event">
 *      <f:if condition="{seminar:fe.isInList(uid: event.uid)}">
 *          <f:else>
 *              <!-- only display it, if it wasn't already displayed -->
 *          </f:else>
 *      </f:if>
 *  </f:for>
 *
 * @package NIM\Nimseminar\ViewHelpers\FE
 */
class InSetViewHelper extends AbstractViewHelper {
    protected  static $set = array();

    /**
     * @param object $object
     * @param null $set
     *
     * @internal param int $uid
     *
     * @return bool
     */
    public function render($object, $set = NULL){
        $set = $this->getSet($object,$set);
        if(!is_array(self::$set[$set])){
            self::$set[$set] = array();
        }

        if(is_object($object)){
            $hash = spl_object_hash($object);
        } else {
            $hash = md5((string)$object);
        }

        NIMGeneral::log(print_r(self::$set,true),LOG_DEBUG);
        if(in_array($hash,self::$set[$set])){
            return true;
        } else {
            self::$set[$set][] = $hash;
            return false;
        }
    }

    private function getSet($object,$set){
        if(is_string($set) || is_int($set)){
            return $set;
        }

        if($set === NULL){
            if(is_object($object)){
                return get_class($object);
            }
        }

        if(is_string($object)){
            return "string";
        }

        if(is_array($object)){
            return "array";
        }

        if(is_int($object)){
            return "integer";
        }

       return rand(0,100);
    }
}