Adding preset table to prevent core keywords from being deleted

client/application.js

@@ -152,6 +152,7 @@
 
                 $('#forgetKeyword').click(onForget);
                 $('#forgetDialog').on('show.bs.modal', function() {
+                    $('#forgetError').hide();
                     $.getJSON('/node/getKeywords', function(keywords) {
                         $('#forgetKeyword').prop('disabled', keywords.length === 0);
                         $('#keywordToForget').empty();

scrape/db.js

@@ -49,4 +49,16 @@ for (var keyword in keywords) {
     conn.query('INSERT INTO keywords VALUES(?, ?, ?, ?, ?)', [keyword].concat(record));
 }
 
+
+//
+// Presets
+//
+
+conn.query('DROP TABLE IF EXISTS presets');
+conn.query('CREATE TABLE presets(name VARCHAR(50) NOT NULL, PRIMARY KEY(name))');
+
+for (var keyword in keywords) {
+    conn.query('INSERT INTO presets VALUES(?)', [keyword]);
+}
+
 conn.end();

scrape/hscd.sql

@@ -42,6 +42,29 @@ INSERT INTO `keywords` VALUES ('atmosphere',0,0,0,1),('food',1,0,0,0),('service'
 /*!40000 ALTER TABLE `keywords` ENABLE KEYS */;
 UNLOCK TABLES;
 
+--
+-- Table structure for table `presets`
+--
+
+DROP TABLE IF EXISTS `presets`;
+/*!40101 SET @saved_cs_client     = @@character_set_client */;
+/*!40101 SET character_set_client = utf8 */;
+CREATE TABLE `presets` (
+  `name` varchar(50) NOT NULL,
+  PRIMARY KEY (`name`)
+) ENGINE=InnoDB DEFAULT CHARSET=latin1;
+/*!40101 SET character_set_client = @saved_cs_client */;
+
+--
+-- Dumping data for table `presets`
+--
+
+LOCK TABLES `presets` WRITE;
+/*!40000 ALTER TABLE `presets` DISABLE KEYS */;
+INSERT INTO `presets` VALUES ('atmosphere'),('food'),('service'),('value');
+/*!40000 ALTER TABLE `presets` ENABLE KEYS */;
+UNLOCK TABLES;
+
 --
 -- Table structure for table `reviews`
 --
@@ -78,4 +101,4 @@ UNLOCK TABLES;
 /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
 /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
 
--- Dump completed on 2014-09-19 10:22:03
+-- Dump completed on 2014-09-20 18:31:08

server/search.js

@@ -168,10 +168,10 @@ function addKeyword(query, callback) {
 }
 
 function removeKeyword(query, callback) {
-    connection.query('DELETE FROM keywords WHERE name=?', [query.keyword], function(err) {
+    connection.query('DELETE FROM keywords WHERE name=? AND name NOT IN (SELECT name FROM presets)', [query.keyword], function(err, fields) {
         callback({
             keyword: query.keyword,
-            success: err === null
+            success: err === null && fields.affectedRows > 0
         });
     });
 }