UI - Dont allow empty tag names (#1641)

changedetectionio/__init__.py

@@ -1364,7 +1364,8 @@ def changedetection_app(config=None, datastore_o=None):
             flash("{} watches set to use default notification settings".format(len(uuids)))
 
         elif (op == 'assign-tag'):
-            op_extradata = request.form.get('op_extradata')
+            op_extradata = request.form.get('op_extradata', '').strip()
+            if op_extradata:
                 tag_uuid = datastore.add_tag(name=op_extradata)
                 if op_extradata and tag_uuid:
                     for uuid in uuids:

changedetectionio/store.py

@@ -566,9 +566,12 @@ class ChangeDetectionStore:
         return ret
 
     def add_tag(self, name):
-        print (">>> Adding new tag -", name)
         # If name exists, return that
         n = name.strip().lower()
+        print (f">>> Adding new tag - '{n}")
+        if not n:
+            return False
+
         for uuid, tag in self.__data['settings']['application'].get('tags', {}).items():
             if n == tag.get('title', '').lower().strip():
                 print (f">>> Tag {name} already exists")