allow ActiveRecord::Core#slice to use array arg

activerecord/CHANGELOG.md

+*   Allow `slice` to take an array of methods (without need for splatting).
+
+    *Cohen Carlisle*
+
 *   Improved partial writes with HABTM and has many through associations
     to fire database query only if relation has been changed.
 

activerecord/lib/active_record/core.rb

@@ -538,7 +538,7 @@ def pretty_print(pp)
 
     # Returns a hash of the given methods with their names as keys and returned values as values.
     def slice(*methods)
-      Hash[methods.map! { |method| [method, public_send(method)] }].with_indifferent_access
+      Hash[methods.flatten.map! { |method| [method, public_send(method)] }].with_indifferent_access
     end
 
     private

activerecord/test/cases/base_test.rb

@@ -1428,6 +1428,16 @@ def test_slice
     assert_nil hash["firm_name"]
   end
 
+  def test_slice_accepts_array_argument
+    attrs = {
+      title: "slice",
+      author_name: "@Cohen-Carlisle",
+      content: "accept arrays so I don't have to splat"
+    }.with_indifferent_access
+    topic = Topic.new(attrs)
+    assert_equal attrs, topic.slice(attrs.keys)
+  end
+
   def test_default_values_are_deeply_dupped
     company = Company.new
     company.description << "foo"