# File lib/active_support/core_ext/hash/deep_merge.rb, line 7 def deep_merge(other_hash) self.merge(other_hash) do |key, oldval, newval| oldval = oldval.to_hash if oldval.respond_to?(:to_hash) newval = newval.to_hash if newval.respond_to?(:to_hash) oldval.class.to_s == 'Hash' && newval.class.to_s == 'Hash' ? oldval.deep_merge(newval) : newval end end