--- /dev/null
+module ActiveSupport #:nodoc:
+ module CoreExtensions #:nodoc:
+ module Hash #:nodoc:
+ # Allows for deep merging
+ module DeepMerge
+ # Returns a new hash with +self+ and +other_hash+ merged recursively.
+ 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
+
+ # Returns a new hash with +self+ and +other_hash+ merged recursively.
+ # Modifies the receiver in place.
+ def deep_merge!(other_hash)
+ replace(deep_merge(other_hash))
+ end
+ end
+ end
+ end
+end