/commands/folder/FolderTagsEdit.php

<?php



/**

 * Add tags to a record

 * 

 * @author David Walker

 * @copyright 2008 California State University

 * @link http://xerxes.calstate.edu

 * @license http://www.gnu.org/licenses/

 * @version $Id: FolderTagsEdit.php 1030 2010-01-05 18:42:09Z dwalker@calstate.edu $

 * @package Xerxes

 */



class Xerxes_Command_FolderTagsEdit extends Xerxes_Command_Folder

{

	public function doExecute()

	{

		$strUsername = $this->request->getSession( "username" );

		

		$iRecord = $this->request->getProperty( "record" );

		$strTags = $this->request->getProperty( "tags" ); // updated tags

		$strShadowTags = $this->request->getProperty( "tagsShaddow" ); // original tags



		//  split tags out on comma



		$arrShadow = explode( ",", $strShadowTags );

		$arrTags = explode( ",", $strTags );

		

		for ( $x = 0 ; $x < count( $arrTags ) ; $x ++ )

		{

			$arrTags[$x] = Xerxes_Framework_Parser::strtolower( trim( $arrTags[$x] ) );

		}

		

		for ( $x = 0 ; $x < count( $arrShadow ) ; $x ++ )

		{

			$arrShadow[$x] = Xerxes_Framework_Parser::strtolower( trim( $arrShadow[$x] ) );

		}

		

		// remove any duplicates

		

		$arrTags = array_unique( $arrTags );

		

		// update the database



		$objData = new Xerxes_DataMap( );

		$objData->assignTags( $strUsername, $arrTags, $iRecord );

		

		// now update the cached version without recalculating all the 

		// totals with a round-trip to the database



		$arrStored = $this->request->getSession( "tags" );

		

		// see which tags are new and which are actually being deleted or changed

		

		$arrDelete = array_diff( $arrShadow, $arrTags );

		$arrAdded = array_diff( $arrTags, $arrShadow );

		

		// deletes!

		

		foreach ( $arrDelete as $strTag )

		{

			foreach ( $arrStored as $strStoredKey => $iStoredValue )

			{

				if ( Xerxes_Framework_Parser::strtoupper( $strTag ) == Xerxes_Framework_Parser::strtoupper( $strStoredKey ) )

				{

					$iStoredValue = ( int ) $iStoredValue;

					

					if ( $iStoredValue > 1 )

					{

						// just deincrement it



						$iStoredValue --;

						$arrStored[$strStoredKey] = $iStoredValue;

					} else

					{

						// this was the only entry for the tag so remove it



						unset( $arrStored[$strStoredKey] );

					}

				}

			}

		}

		

		// adds!

		

		foreach ( $arrAdded as $strTag )

		{

			if ( $strTag != "" )

			{

				$bolExists = false;

				

				foreach ( $arrStored as $strStoredKey => $iStoredValue )

				{

					if ( Xerxes_Framework_Parser::strtoupper( $strTag ) == Xerxes_Framework_Parser::strtoupper( $strStoredKey ) )

					{

						// there is one in here already so increment



						$iStoredValue = ( int ) $iStoredValue;

						$iStoredValue ++;

						$arrStored[$strStoredKey] = $iStoredValue;

						

						$bolExists = true;

					}

				}

				

				// if it wasn't in there already, add it as the first



				if ( $bolExists == false )

				{

					$arrStored[$strTag] = 1;

				}

			}

		}

		

		// now store it back in session



		$this->setTagsCache( $arrStored );

		

		return 1;

	

	}

}



?>