Adding a check to prevent duplicate channel names.

commands_comsys.py

@@ -139,6 +139,12 @@ def cmd_ccreate(cdat):
 
    if cname == '':
       session.msg("You must supply a name!")
+      return
+
+   name_matches = functions_comsys.cname_search(cname, exact=True)
+
+   if name_matches:
+      session.msg("A channel with that name already exists.")
    else:
       # Create and set the object up.
       cdat = {"name": cname, "owner": pobject}

functions_comsys.py

@@ -42,4 +42,16 @@ def create_channel(cdat):
    new_chan.header = "[%s]" % (ansi.parse_ansi(cdat["name"]),)
    new_chan.set_owner(cdat["owner"])
    new_chan.save()
-   return new_chan
+   return new_chan
+
+def cname_search(search_text, exact=False):
+   """
+   Searches for a particular channel name. Returns a QuerySet with the
+   results.
+   
+   exact: (bool) Do an exact (case-insensitive) name match if true.
+   """
+   if exact:
+      return CommChannel.objects.filter(name__iexact=search_text)
+   else:
+      return CommChannel.objects.filter(name__istartswith=search_text)