Move create methods into managers, leave utils.create as wrappers.

Resolve #2118.

evennia/help/manager.py

@@ -1,8 +1,11 @@
 """
 Custom manager for HelpEntry objects.
 """
+from django.db import IntegrityError
 from evennia.utils import logger, utils
 from evennia.typeclasses.managers import TypedObjectManager
+from evennia.utils.utils import make_iter
+from evennia.server import signals
 
 __all__ = ("HelpEntryManager",)
 
@@ -149,3 +152,46 @@ class HelpEntryManager(TypedObjectManager):
             return self.filter(db_key__iexact=ostring, db_help_category__iexact=help_category)
         else:
             return self.filter(db_key__iexact=ostring)
+
+    def create_help(self, key, entrytext, category="General", locks=None, aliases=None, tags=None):
+        """
+        Create a static help entry in the help database. Note that Command
+        help entries are dynamic and directly taken from the __doc__
+        entries of the command. The database-stored help entries are
+        intended for more general help on the game, more extensive info,
+        in-game setting information and so on.
+
+        Args:
+            key (str): The name of the help entry.
+            entrytext (str): The body of te help entry
+            category (str, optional): The help category of the entry.
+            locks (str, optional): A lockstring to restrict access.
+            aliases (list of str, optional): List of alternative (likely shorter) keynames.
+            tags (lst, optional): List of tags or tuples `(tag, category)`.
+
+        Returns:
+            help (HelpEntry): A newly created help entry.
+
+        """
+        try:
+            new_help = self.model()
+            new_help.key = key
+            new_help.entrytext = entrytext
+            new_help.help_category = category
+            if locks:
+                new_help.locks.add(locks)
+            if aliases:
+                new_help.aliases.add(make_iter(aliases))
+            if tags:
+                new_help.tags.batch_add(*tags)
+            new_help.save()
+            return new_help
+        except IntegrityError:
+            string = "Could not add help entry: key '%s' already exists." % key
+            logger.log_err(string)
+            return None
+        except Exception:
+            logger.log_trace()
+            return None
+
+        signals.SIGNAL_HELPENTRY_POST_CREATE.send(sender=new_help)