Perf: refactor methods using inject when not need in activemodel.

Signed-off-by: Santiago Pastorino <santiago@wyeworks.com>

1 files changed, 2 insertions, 9 deletions

diff --git a/activemodel/lib/active_model/serialization.rb b/activemodel/lib/active_model/serialization.rb
index 8f90ef64ba..37739b98a1 100644
--- a/activemodel/lib/active_model/serialization.rb
+++ b/activemodel/lib/active_model/serialization.rb
@@ -79,15 +79,8 @@ module ActiveModel
         attribute_names -= except
       end
 
-      method_names = Array.wrap(options[:methods]).inject([]) do |methods, name|
-        methods << name if respond_to?(name.to_s)
-        methods
-      end
-
-      (attribute_names + method_names).inject({}) { |hash, name|
-        hash[name] = send(name)
-        hash
-      }
+      method_names = Array.wrap(options[:methods]).map { |n| n if respond_to?(n.to_s) }.compact
+      Hash[(attribute_names + method_names).map { |n| [n, send(n)] }]
     end
   end
 end