lib/eco/language/models/collection.rb in eco-helpers-2.0.24 vs lib/eco/language/models/collection.rb in eco-helpers-2.0.25

@@ -132,11 +132,14 @@
         def group_by(attr = nil, &block)
           return to_h(attr) if attr
           to_a.group_by(&block) if block
         end
 
-        def to_h(attr)
-          return {} if !attr
+        # By a specific `attr` or a block
+        # @note either one or the other should be present
+        def to_h(attr, &block)
+          return to_a.group_by(&block) if block
+          raise "And attr or a block are required. Given attr: #{attr}" unless attr
           to_a.group_by { |object| object.method(attr).call }
         end
         # @!endgroup
 
         # @!group `attr` presence methods