Allows for deep merging

Methods
D
Instance Public methods
deep_merge(other_hash)

Returns a new hash with selfand other_hash merged recursively.

# File activesupport/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
deep_merge!(other_hash)

Returns a new hash with selfand other_hash merged recursively. Modifies the receiver in place.

# File activesupport/lib/active_support/core_ext/hash/deep_merge.rb, line 17
def deep_merge!(other_hash)
  replace(deep_merge(other_hash))
end