Merge pull request #20208 from gaurish/raise_on_missing_ordered_options

Add bang version to OrderedOptions

activesupport/CHANGELOG.md

+*   Add a bang version to `ActiveSupport::OrderedOptions` get methods which will raise
+    an `KeyError` if the value is `.blank?`
+
+    Before:
+
+        if (slack_url = Rails.application.secrets.slack_url).present?)
+          # Do something worthwhile
+        else
+          # Raise as important secret password is not specified
+        end
+
+    After:
+
+        slack_url = Rails.application.secrets.slack_url!
+
+    *Aditya Sanghi*, *Gaurish Sharma*
+
 *   Remove deprecated `Class#superclass_delegating_accessor`.
     Use `Class#class_attribute` instead.
 

activesupport/lib/active_support/ordered_options.rb

@@ -31,7 +31,13 @@ def method_missing(name, *args)
       if name_string.chomp!('=')
         self[name_string] = args.first
       else
-        self[name]
+        bangs = name_string.chomp!('!')
+
+        if bangs
+          fetch(name_string.to_sym).presence || raise(KeyError.new("#{name_string} is blank."))
+        else
+          self[name_string]
+       end
       end
     end
 

activesupport/test/ordered_options_test.rb

@@ -85,4 +85,19 @@ def test_introspection
     assert_equal 42, a.method(:blah=).call(42)
     assert_equal 42, a.method(:blah).call
   end
+
+  def test_raises_with_bang
+    a = ActiveSupport::OrderedOptions.new
+    a[:foo] = :bar
+    assert a.respond_to?(:foo!)
+
+    assert_nothing_raised { a.foo! }
+    assert_equal a.foo, a.foo!
+
+    assert_raises(KeyError) do
+      a.foo = nil
+      a.foo!
+    end
+    assert_raises(KeyError) { a.non_existing_key! }
+  end
 end