revises 877e42e

* A string in the example lacked quotes.

* The tests asserted stuff about :last_name, whereas
  test params do not have that key.

* But, the first one passed, why? After hitting my head against
  the wall and doing some obscure rituals realized the new
  #require had an important typo, wanted to iterate over the
  array argument (key), but it ran over its own hash keys
  (method #keys).

* Modified the test to prevent the same typo to happen again.

* The second test assigned to an unused variable safe_params
  that has been therefore removed.

* Grammar of the second test description.

* Since I was on it, reworded both test descriptions.

1 files changed, 2 insertions, 2 deletions

diff --git a/actionpack/lib/action_controller/metal/strong_parameters.rb b/actionpack/lib/action_controller/metal/strong_parameters.rb
index 02599a4654..da507ca294 100644
--- a/actionpack/lib/action_controller/metal/strong_parameters.rb
+++ b/actionpack/lib/action_controller/metal/strong_parameters.rb
@@ -256,11 +256,11 @@ module ActionController
     #   ActionController::Parameters.new(first_name: 'Gaurish', title: nil).require([:first_name, :title])
     #   # => ActionController::ParameterMissing: param is missing or the value is empty: title
     #
-    #   params = ActionController::Parameters.new(first_name: 'Gaurish', title: Mjallo)
+    #   params = ActionController::Parameters.new(first_name: 'Gaurish', title: 'Mjallo')
     #   first_name, title = params.require([:first_name, :title])
     #
     def require(key)
-      return keys.map { |k| require(k) } if key.is_a?(Array)
+      return key.map { |k| require(k) } if key.is_a?(Array)
       value = self[key]
       if value.present? || value == false
         value