Module: ActiveSupport::CoreExtensions::Hash::Keys

Included in:
Hash
Defined in:
lib/active_record/support/core_ext/hash/keys.rb

Instance Method Summary collapse

Instance Method Details

#assert_valid_keys(valid_keys) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/active_record/support/core_ext/hash/keys.rb', line 28

def assert_valid_keys(valid_keys)
  unknown_keys = keys - valid_keys
  raise(ArgumentError, "Unknown key(s): #{unknown_keys.join(", ")}") unless unknown_keys.empty?
end

#symbolize_keys ⇒ Object Also known as: to_options

Return a new hash with all keys converted to symbols.



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# File 'lib/active_record/support/core_ext/hash/keys.rb', line 7

def symbolize_keys
  inject({}) do |options, (key, value)|
    options[key.to_sym] = value
    options
  end
end

#symbolize_keys! ⇒ Object Also known as: to_options!

Destructively convert all keys to symbols.



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# File 'lib/active_record/support/core_ext/hash/keys.rb', line 15

def symbolize_keys!
  keys.each do |key|
    unless key.is_a?(Symbol)
      self[key.to_sym] = self[key]
      delete(key)
    end
  end
  self
end