theme error handling

2 files changed, 31 insertions, 15 deletions

diff --git a/templates/themes/categories/info.php b/templates/themes/categories/info.php
index 0090f39d..108cc254 100644
--- a/templates/themes/categories/info.php
+++ b/templates/themes/categories/info.php
@@ -27,4 +27,16 @@ Requires $config[\'boards\'] and $config[\'categories\'].';
 	
 	// Unique function name for building everything
 	$theme['build_function'] = 'categories_build';
+	
+	$theme['install_callback'] = 'categories_install';
+	if(!function_exists('categories_install')) {
+		function categories_install($settings) {
+			global $config;
+			
+			if(!isset($config['boards']) || !isset($config['categories'])) {
+				return Array(false, '<h2>Prerequisites not met!</h2>' . 
+					'This theme requires $config[\'boards\'] and $config[\'categories\'] to be set.');
+			}
+		}
+	}
 ?>
diff --git a/templates/themes/categories/theme.php b/templates/themes/categories/theme.php
index de1b4a5b..d48c150a 100644
--- a/templates/themes/categories/theme.php
+++ b/templates/themes/categories/theme.php
@@ -121,27 +121,31 @@
 				'<li><a class="system" href="javascript:parent.removeFrames()">[Remove Frames]</a></li>' .
 			'</ul></fieldset>';
 			
-			for($cat = 0; $cat < count($config['categories']); $cat++) {
-				$body .= '<fieldset><legend>' . $config['categories'][$cat] . '</legend><ul>';
+			if(isset($config['categories'])) {
+				for($cat = 0; $cat < count($config['categories']); $cat++) {
+					$body .= '<fieldset><legend>' . $config['categories'][$cat] . '</legend><ul>';
 				
-				foreach($config['boards'][$cat] as &$board) {
-					$body .= '<li><a href="' .
-						sprintf($config['board_path'], $board) .
-					'">' . boardTitle($board) . '</a></li>';
-				}
+					foreach($config['boards'][$cat] as &$board) {
+						$body .= '<li><a href="' .
+							sprintf($config['board_path'], $board) .
+						'">' . boardTitle($board) . '</a></li>';
+					}
 				
-				$body .= '</ul></fieldset>';
+					$body .= '</ul></fieldset>';
+				}
 			}
 			
-			foreach($config['custom_categories'] as $name => &$group) {
-				$body .= '<fieldset><legend>' . $name . '</legend><ul>';
+			if(isset($config['custom_categories'])) {
+				foreach($config['custom_categories'] as $name => &$group) {
+					$body .= '<fieldset><legend>' . $name . '</legend><ul>';
 				
-				foreach($group as $title => &$url) {
-					$body .= '<li><a href="' . $url .
-					'">' . $title . '</a></li>';
-				}
+					foreach($group as $title => &$url) {
+						$body .= '<li><a href="' . $url .
+						'">' . $title . '</a></li>';
+					}
 				
-				$body .= '</ul></fieldset>';
+					$body .= '</ul></fieldset>';
+				}
 			}
 			
 			// Finish page