fix tag caching issues

functions.php

@@ -1396,6 +1396,7 @@
 					'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
 
 				$filtered_tags = array();
+				$tags_to_cache = array();
 
 				if ($entry_tags && is_array($entry_tags)) {
 					foreach ($entry_tags as $tag) {
@@ -1405,6 +1406,8 @@
 					}
 				} 
 
+				$filtered_tags = array_unique($filtered_tags);
+
 				if (defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug']) {
 					_debug("update_rss_feed: filtered article tags:");
 					print_r($filtered_tags);
@@ -1434,14 +1437,18 @@
 									VALUES ('$owner_uid','$tag', '$entry_int_id')");
 							}
 
+						array_push($tags_to_cache, $tag);
+					}
+
 					/* update the cache */
 							
-							$tags_str = db_escape_string(join(",", $filtered_tags));
+					$tags_to_cache = array_unique($tags_to_cache);
+		
+					$tags_str = db_escape_string(join(",", $tags_to_cache));
 
 					db_query($link, "UPDATE ttrss_user_entries 
 						SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
 						AND owner_uid = $owner_uid");
-						}
 
 					db_query($link, "COMMIT");
 				} 

modules/backend-rpc.php

@@ -424,7 +424,6 @@
 
 			$tags_str = db_escape_string($_REQUEST["tags_str"]);
 			$tags = array_unique(trim_array(split(",", $tags_str)));
-			$tags_str = db_escape_string(join(",", $tags));
 
 			db_query($link, "BEGIN");
 
@@ -433,6 +432,8 @@
 
 			if (db_num_rows($result) == 1) {
 
+				$tags_to_cache = array();
+
 				$int_id = db_fetch_result($result, 0, "int_id");
 
 				db_query($link, "DELETE FROM ttrss_tags WHERE 
@@ -455,12 +456,18 @@
 						db_query($link, "INSERT INTO ttrss_tags 
 							(post_int_id, owner_uid, tag_name) VALUES ('$int_id', '".$_SESSION["uid"]."', '$tag')");
 					}
-				}
+
+					array_push($tags_to_cache, $tag);
 				}
 
+				/* update tag cache */
+
+				$tags_str = join(",", $tags_to_cache);
+
 				db_query($link, "UPDATE ttrss_user_entries 
 					SET tag_cache = '$tags_str' WHERE ref_id = '$id'
 					AND owner_uid = " . $_SESSION["uid"]);
+			}
 
 			db_query($link, "COMMIT");