diff --git a/app/coffee/utils.coffee b/app/coffee/utils.coffee
index 3fe4d186..a4710cdf 100644
--- a/app/coffee/utils.coffee
+++ b/app/coffee/utils.coffee
@@ -31,5 +31,15 @@ bindOnce = (scope, attr, continuation) =>
         delBind() if delBind
 
 
+mixOf = (base, mixins...) ->
+    class Mixed extends base
+
+    for mixin in mixins by -1 #earlier mixins override later ones
+        for name, method of mixin::
+            Mixed::[name] = method
+    Mixed
+
+
 taiga = @.taiga
 taiga.bindOnce = bindOnce
+taiga.mixOf = mixOf