Module: Hashie::Extensions::StringifyKeys::ClassMethods

Included in:
Hashie, Hashie::Extensions::StringifyKeys
Defined in:
lib/hashie/extensions/stringify_keys.rb

Instance Method Summary collapse

Instance Method Details

#stringify_keys(hash) ⇒ Object

Return a copy of hash with all keys converted to strings.

Parameters:

  • hash (::Hash) 


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# File 'lib/hashie/extensions/stringify_keys.rb', line 57

def stringify_keys(hash)
  copy = hash.dup
  copy.extend(Hashie::Extensions::StringifyKeys) unless copy.respond_to?(:stringify_keys!)
  copy.tap do |new_hash|
    stringify_keys!(new_hash)
  end
end

#stringify_keys!(hash) ⇒ Object

Convert all keys in the hash to strings.

Examples:

test = {:abc => 'def'}
test.stringify_keys!
test # => {'abc' => 'def'}

Parameters:

  • hash (::Hash) 


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# File 'lib/hashie/extensions/stringify_keys.rb', line 45

def stringify_keys!(hash)
  hash.extend(Hashie::Extensions::StringifyKeys) unless hash.respond_to?(:stringify_keys!)
  hash.keys.each do |k| # rubocop:disable Performance/HashEachMethods
    stringify_keys_recursively!(hash[k])
    hash[k.to_s] = hash.delete(k)
  end
  hash
end

#stringify_keys_recursively!(object) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Stringify all keys recursively within nested hashes and arrays.



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# File 'lib/hashie/extensions/stringify_keys.rb', line 25

def stringify_keys_recursively!(object)
  case object
  when self.class
    stringify_keys!(object)
  when ::Array
    object.each do |i|
      stringify_keys_recursively!(i)
    end
  when ::Hash
    stringify_keys!(object)
  end
end