Inserttags für MM - Überarbeitete Version - Alpha

gistfile1.php

<?php

/**
 * The MetaModels extension allows the creation of multiple collections of custom items,
 * each with its own unique set of selectable attributes, with attribute extendability.
 * The Front-End modules allow you to build powerful listing and filtering of the
 * data in each collection.
 *
 * PHP version 5
 * @package     MetaModels
 * @subpackage  metamodels_inserttags
 * @author      Tim Gatzky <[email protected]>
 * @author		Stefan Heimes <[email protected]>
 * @copyright   The MetaModels team.
 * @license     LGPL.
 * @filesource
 */
/*
  Available inserttags

  {{metamodel::total::list::ce::*}}
  {{metamodel::total::list::mod::*}}
  {{metamodel::total::filter::ce::*}}
  {{metamodel::total::filter::mod::*}}
  --> no need to tell the inserttag its a list or filter type
  {{metamodel::total::mod::*}}
  {{metamodel::total::ce::*}}

  -- item based
  {{metamodelitem::table-or-id::item-or-setOfIds::rendersetting}} -> html output
  {{metamodeldetailitem::table-or-id::item::rendersetting}} -> html output

  -- attribute based
  {{metamodelattribute::table-or-id::item-id::field}} -> value, plain text

 */


class MetaModelInsertTags extends Controller
{

	protected $arrMappingTagFunction = array(
		'metamodel'			 => array(
			'total' => array(
				'function'	 => 'getCount',
				'param'		 => array(3, 4)
			)
		),
		'metamodelattribute' => array(
			'function'	 => 'getAttribute',
			'param'		 => array(1, 2, 3)
		)
	);

	public function replaceTags($strTag)
	{
		$arrElements = explode('::', $strTag);

		// Init the mapping array.
		$arrPartElement = $this->arrMappingTagFunction;

		// Run each param.
		for ($i = 0; $i < count($arrElements); $i++)
		{
			// Get the current key.
			$strCurrentKey = $arrElements[$i];

			// Check if we known this key.
			if (isset($arrPartElement[$strCurrentKey]))
			{
				// Check if we have a function set.
				if (isset($arrPartElement[$strCurrentKey]['function']))
				{
					// Get the function name.
					$strFunction	 = $arrPartElement[$strCurrentKey]['function'];
					$arrParameters	 = array();

					// Get the parameters.
					if (isset($arrPartElement[$strCurrentKey]['param']))
					{
						foreach ($arrPartElement[$strCurrentKey]['param'] as $intKey)
						{
							$arrParameters[] = $arrElements[$intKey];
						}
					}

					// Call the function.
					return call_user_func_array(array($this, $strFunction), $arrParameters);
				}
				else
				{
					$arrPartElement = $arrPartElement[$strCurrentKey];
				}
			}
			else
			{
				// We did not found the key in list. return false.
				return false;
			}
		}

		// End of all. If we reach this point, something wents wrong.
		return false;
	}

	/**
	 * Replace MetaModels related inserttags
	 *
	 * @param string
	 * @return mixed
	 */
	public function replaceTagsOriginal($strTag)
	{
		$arrElements = explode('::', $strTag);

		switch ($arrElements[0])
		{
			//-- metamodelitem
			case 'metamodelitem':

				// metamodel by table or id
				$objMetaModel = null;
				if (is_numeric($arrElements[1]))
				{
					$objMetaModel = MetaModelFactory::byId($arrElements[1]);
				}
				else if (is_string($arrElements[1]))
				{
					$objMetaModel = MetaModelFactory::byTableName($arrElements[1]);
				}
				else
				{
					return false;
				}

				$objMetaModelList	 = new MetaModelList();
				$objMetaModelList->setMetaModel($objMetaModel->get('id'), $arrElements[3]);
				#$objMetaModelList->setFilterParam(0,array(),$_GET);
				// handle a set of ids
				$arrIds				 = explode(',', $arrElements[2]);

				// check publish state of item
				$objDB				 = Database::getInstance();
				$objAttrCheckPublish = $objDB->prepare("SELECT colname FROM tl_metamodel_attribute WHERE pid=? AND check_publish=1")->limit(1)->execute($objMetaModel->get('id'));

				if ($objAttrCheckPublish->numRows > 0)
				{
					foreach ($arrIds as $i => $itemId)
					{
						$objItem = $objMetaModel->findById($itemId);
						if (!$objItem->get($objAttrCheckPublish->colname))
						{
							unset($arrIds[$i]);
						}
					}
				}

				// render an empty inserttag rather than displaying a list with an empty result information. do not return false here because the inserttag itself is correct.
				if (count($arrIds) < 1)
				{
					return '';
				}

				$objMetaModelList->addFilterRule(new MetaModelFilterRuleStaticIdList($arrIds));

				return $objMetaModelList->render(false, $this);
				break;



			default:
				return false;
				break;
		}
	}

	////////////////////////////////////////////////////////////////////////////
	// Tag functions
	////////////////////////////////////////////////////////////////////////////

	/**
	 * Get from MM X the item with the id Y and parse the attribute Z and
	 * return it.
	 * 
	 * @param mixed $mixMMName Name or id of mm.
	 * @param type $intDataId ID form the row.
	 * @param type $strAttributeName Name of the attribute.
	 * 
	 * @return boolean|mixed
	 */
	protected function getAttribute($mixMMName, $intDataId, $strAttributeName)
	{
		// Get the MM.
		$objMM = $this->loadMM($mixMMName);
		if ($objMM == null)
		{
			return false;
		}

		// Get item.
		$objMetaModelItem = $objMM->findById($intDataId);

		// Parse attribute.
		$arrAttr = $objMetaModelItem->parseAttribute($strAttributeName);

		// ToDo: Maybe this should not allways be a text element.
		return $arrAttr['text'];
	}

	/**
	 * Get count from a module or content element of a mm.
	 * 
	 * @param string $strType Type of element like mod or ce.
	 * @param type $intID
	 * 
	 * @return boolean
	 */
	protected function getCount($strType, $intID)
	{
		switch ($strType)
		{
			// From module, can be a metamodel list or filter
			case 'mod':
				$objMMResult = $this->getMMDataFrom('tl_module', $intID);
				break;

			// From content element, can be a metamodel list or filter.
			case 'ce':
				$objMMResult = $this->getMMDataFrom('tl_content', $intID);
				break;

			// Unknow element type.
			default:
				return false;
		}

		// Check if we have data
		if ($objMMResult != null)
		{
			return $this->getCountFor($objMMResult->metamodel, $objMMResult->metamodel_filtering);
		}

		return false;
	}

	////////////////////////////////////////////////////////////////////////////
	// Helper
	////////////////////////////////////////////////////////////////////////////

	/**
	 * Get some informations about a table.
	 * 
	 * @param string $strTable Name of table
	 * @return null
	 */
	protected function getMMDataFrom($strTable, $intID)
	{
		$objDB = Database::getInstance();

		// Check if we know the table
		if (!$objDB->tableExists($strTable))
		{
			return null;
		}

		// Get all information form table or retunr null if we have no data.
		$objResult = $objDB
				->prepare("SELECT metamodel, metamodel_filtering FROM " . $strTable . " WHERE id=?")
				->limit(1)
				->execute($intID);

		// Check if we have some data.
		if ($objResult->numRows < 1)
		{
			return null;
		}

		return $objResult;
	}

	/**
	 * Try to laod the mm by id or name.
	 * 
	 * @param mixed $mixMMName Name or id of mm.
	 * 
	 * @return IMetaModel|null
	 */
	protected function loadMM($mixMMName)
	{
		// ID.
		if (is_numeric($mixMMName))
		{
			return MetaModelFactory::byId($mixMMName);
		}
		// Name.
		else if (is_string($mixMMName))
		{
			return MetaModelFactory::byTableName($mixMMName);
		}

		// Unknown.
		return null;
	}

	/**
	 * Get count form one MM for chosen filter.
	 * 
	 * @param int $intMMId ID of the metamodels
	 * @param int $intFilterID ID of the filter
	 * 
	 * @return boolean|int False for no data or integer for the count result.
	 */
	protected function getCountFor($intMMId, $intFilterID)
	{
		// ToDo: Add check if we have realy a mm and ff.
		$objMetaModel = $this->loadMM($intMMId);
		if ($objMetaModel == null)
		{
			return false;
		}

		$objFilter = $objMetaModel->prepareFilter($intFilterID, $_GET);

		return $objMetaModel->getCount($objFilter);
	}

}