From 5cd2beb0135faf18c978507a4be272dfc1499bb8 Mon Sep 17 00:00:00 2001 From: Sean Griffin Date: Wed, 9 Mar 2016 09:47:46 -0700 Subject: Add `ActionController::Parameters#dig` This method will only be added when used with Ruby 2.3.0 or greater. This method has the same behavior as `Hash#dig`, except it will convert hashes to `ActionController::Parameters`, similar to `#[]` and `#fetch`. --- .../test/controller/parameters/accessors_test.rb | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'actionpack/test') diff --git a/actionpack/test/controller/parameters/accessors_test.rb b/actionpack/test/controller/parameters/accessors_test.rb index cea265f9ab..17c62dc3fe 100644 --- a/actionpack/test/controller/parameters/accessors_test.rb +++ b/actionpack/test/controller/parameters/accessors_test.rb @@ -194,4 +194,24 @@ class ParametersAccessorsTest < ActiveSupport::TestCase assert_match(/permitted: true/, @params.inspect) end + + if Hash.method_defined?(:dig) + test "#dig delegates the dig method to its values" do + assert_equal "David", @params.dig(:person, :name, :first) + assert_equal "Chicago", @params.dig(:person, :addresses, 0, :city) + end + + test "#dig converts hashes to parameters" do + assert_kind_of ActionController::Parameters, @params.dig(:person) + assert_kind_of ActionController::Parameters, @params.dig(:person, :addresses, 0) + assert @params.dig(:person, :addresses).all? do |value| + value.is_a?(ActionController::Parameters) + end + end + else + test "ActionController::Parameters does not respond to #dig on Ruby 2.2" do + assert_not ActionController::Parameters.method_defined?(:dig) + assert_not @params.respond_to?(:dig) + end + end end -- cgit v1.2.3