From 3b384b7374fd44795d3ceb7c434630d1b4695750 Mon Sep 17 00:00:00 2001
From: ben <ben@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Fri, 4 Apr 2008 13:23:25 +0000
Subject: Added better support for arrays of metadata

git-svn-id: https://code.elgg.org/elgg/trunk@402 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/lib/entities.php |  7 +++++--
 engine/lib/metadata.php | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+), 2 deletions(-)

(limited to 'engine/lib')

diff --git a/engine/lib/entities.php b/engine/lib/entities.php
index e344968a9..92b658ef2 100644
--- a/engine/lib/entities.php
+++ b/engine/lib/entities.php
@@ -117,8 +117,11 @@
 		{
 			$md = get_metadata_byname($this->getGUID(), $name);
 
-			if ($md)
-				return $md->value;
+			if ($md && !is_array($md)) {
+				return $md->value;
+			} else if ($md && is_array($md)) {
+				return metadata_array_to_values($md);
+			}
 				
 			return null;
 		}
diff --git a/engine/lib/metadata.php b/engine/lib/metadata.php
index 92b683789..37a89f09e 100644
--- a/engine/lib/metadata.php
+++ b/engine/lib/metadata.php
@@ -375,6 +375,44 @@
 		
 		return $returnvalue;
 	}
+	
+	/**
+	 * Takes in a comma-separated string and returns an array of tags which have been trimmed and set to lower case
+	 *
+	 * @param string $string Comma-separated tag string
+	 * @return array|false An array of strings, or false on failure
+	 */
+	function string_to_tag_array($string) {
+		
+		if (is_string($string)) {
+			$ar = explode(",",$string);
+			array_walk($ar,'trim');
+			array_walk($ar,'strtolower');
+			return $ar;
+		}
+		return false;
+		
+	}
+	
+	/**
+	 * Takes a metadata array (which has all kinds of properties) and turns it into a simple array of strings 
+	 *
+	 * @param array $array Metadata array
+	 * @return array Array of strings
+	 */
+	function metadata_array_to_values($array) {
+		
+		$valuearray = array();
+		
+		if (is_array($array)) {
+			foreach($array as $element) {
+				$valuearray[] = $element->value;
+			}
+		}
+		
+		return $valuearray;
+		
+	}
 	
 	/** Register the hook */
 	register_plugin_hook("export", "all", "export_metadata_plugin_hook", 2);
-- 
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