1 files changed, 11 insertions, 1 deletions
diff --git a/acf2/model/node.lua b/acf2/model/node.lua
index d9d095d..711680e 100644
--- a/acf2/model/node.lua
+++ b/acf2/model/node.lua
@@ -1,5 +1,5 @@
 --[[
-Copyright (c) 2012-2013 Kaarle Ritvanen
+Copyright (c) 2012-2014 Kaarle Ritvanen
 See LICENSE file for license details
 --]]
 
@@ -264,7 +264,17 @@ function M.Collection:init(context, params, dtype)
       if not params.editable then
 	 raise(mt.path, 'Collection is not editable')
       end
+
       mt.check_removable(k, v)
+
+      if params.key then
+	 local kf = M.BoundMember(self, k, params.key)
+	 if kf:normalize(k) ~= k then
+	    raise(mt.path, 'Invalid member name: '..k)
+	 end
+	 kf:validate(k)
+      end
+
       mt.member(k):save(v)
    end
 end