Add get_all_cmdsets` helper inspired by work by user trhr in unmerged PR

evennia/web/admin/objects.py

@@ -79,6 +79,15 @@ class ObjectCreateForm(forms.ModelForm):
         required=False,
         widget=forms.TextInput(attrs={"size": "78"}),
     )
+
+    # This is not working well because it will not properly allow an empty choice, and will
+    # also not work well for comma-separated storage without more work. Notably, it's also
+    # a bit hard to visualize.
+    # db_cmdset_storage = forms.MultipleChoiceField(
+    #     label="CmdSet",
+    #     required=False,
+    #     choices=adminutils.get_and_load_typeclasses(parent=ObjectDB))
+
     db_location = forms.ModelChoiceField(
         ObjectDB.objects.all(),
         label="Location",

evennia/web/admin/utils.py

@@ -4,7 +4,7 @@ Helper utils for admin views.
 """
 
 import importlib
-from evennia.utils.utils import get_all_typeclasses, inherits_from
+from evennia.utils.utils import get_all_typeclasses, inherits_from, get_all_cmdsets
 
 
 def get_and_load_typeclasses(parent=None, excluded_parents=None):
@@ -46,6 +46,34 @@ def get_and_load_typeclasses(parent=None, excluded_parents=None):
                "evennia.scripts.models.ScriptDB",
                "evennia.comms.models.ChannelDB",)]
 
-    # return on form exceptedaccepted by ChoiceField
+    # return on form excepted by ChoiceField
     return [(path, path) for path in tpaths if path]
 
+
+def get_and_load_cmdsets(parent=None, excluded_parents=None):
+    """
+    Get all cmdsets available or as children based on a parent cmdset.  We need
+    to initialize things here to make sure as much as possible is loaded in the
+    admin process. This is intended to be used with forms.ChoiceField.
+
+    Args:
+        parent (str, optional): Python-path to the parent cmdset, if any.
+        excluded_parents (list): A list of cmset-paths to exclude from the result.
+
+    Returns:
+        list: A list of (str, str), the way ChoiceField wants it.
+
+    """
+    # we must do this to have cmdsets imported and accessible in the inheritance tree.
+    import evennia
+    evennia._init()
+
+    cmap = get_all_cmdsets(parent)
+
+    excluded_parents = excluded_parents or []
+    cpaths = [path for path in cmap if not any(path == excluded for excluded in excluded_parents)]
+
+    cpaths = sorted(cpaths, key=lambda k: (1 if k.startswith("evennia.") else 0, k))
+
+    # return on form expected by ChoiceField
+    return [("", "-")] + [(path, path) for path in cpaths if path]