diff options
Diffstat (limited to 'tpl/collections/collections.go')
| -rw-r--r-- | tpl/collections/collections.go | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/tpl/collections/collections.go b/tpl/collections/collections.go index bad65369f..92a61e575 100644 --- a/tpl/collections/collections.go +++ b/tpl/collections/collections.go @@ -1,4 +1,4 @@ -// Copyright 2018 The Hugo Authors. All rights reserved. +// Copyright 2019 The Hugo Authors. All rights reserved. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. @@ -329,13 +329,17 @@ func (ns *Namespace) Group(key interface{}, items interface{}) (interface{}, err return nil, errors.New("nil is not a valid key to group by") } + if g, ok := items.(collections.Grouper); ok { + return g.Group(key, items) + } + in := newSliceElement(items) if g, ok := in.(collections.Grouper); ok { return g.Group(key, items) } - return nil, fmt.Errorf("grouping not supported for type %T", items) + return nil, fmt.Errorf("grouping not supported for type %T %T", items, in) } // IsSet returns whether a given array, channel, slice, or map has a key |