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-rw-r--r--actionpack/lib/action_controller/metal/strong_parameters.rb15
1 files changed, 15 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/metal/strong_parameters.rb b/actionpack/lib/action_controller/metal/strong_parameters.rb
index 9690f0ca28..0217376ab3 100644
--- a/actionpack/lib/action_controller/metal/strong_parameters.rb
+++ b/actionpack/lib/action_controller/metal/strong_parameters.rb
@@ -660,6 +660,21 @@ module ActionController
self
end
+ # Returns a new <tt>ActionController::Parameters</tt> with all keys from
+ # current hash merged into +other_hash+.
+ def reverse_merge(other_hash)
+ new_instance_with_inherited_permitted_status(
+ other_hash.to_h.merge(@parameters)
+ )
+ end
+
+ # Returns current <tt>ActionController::Parameters</tt> instance with
+ # current hash merged into +other_hash+.
+ def reverse_merge!(other_hash)
+ @parameters.merge!(other_hash.to_h) { |key, left, right| left }
+ self
+ end
+
# This is required by ActiveModel attribute assignment, so that user can
# pass +Parameters+ to a mass assignment methods in a model. It should not
# matter as we are using +HashWithIndifferentAccess+ internally.