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-rw-r--r--activemodel/lib/active_model/errors.rb12
1 files changed, 12 insertions, 0 deletions
diff --git a/activemodel/lib/active_model/errors.rb b/activemodel/lib/active_model/errors.rb
index 942b4fa9bb..76c23df541 100644
--- a/activemodel/lib/active_model/errors.rb
+++ b/activemodel/lib/active_model/errors.rb
@@ -93,6 +93,18 @@ module ActiveModel
@details = other.details.dup
end
+ # Merges the errors from <tt>other</tt>.
+ #
+ # other - The ActiveModel::Errors instance.
+ #
+ # Examples
+ #
+ # person.errors.merge!(other)
+ def merge!(other)
+ @messages.merge!(other.messages) { |_, ary1, ary2| ary1 + ary2 }
+ @details.merge!(other.details) { |_, ary1, ary2| ary1 + ary2 }
+ end
+
# Clear the error messages.
#
# person.errors.full_messages # => ["name cannot be nil"]