Module: ActiveSupport::CoreExtensions::Hash::Keys
- Included in:
- Hash
- Defined in:
- lib/active_support/core_ext/hash/keys.rb
Instance Method Summary collapse
- #assert_valid_keys(valid_keys) ⇒ Object
-
#stringify_keys ⇒ Object
Return a new hash with all keys converted to strings.
-
#stringify_keys! ⇒ Object
Destructively convert all keys to strings.
-
#symbolize_keys ⇒ Object
(also: #to_options)
Return a new hash with all keys converted to symbols.
-
#symbolize_keys! ⇒ Object
(also: #to_options!)
Destructively convert all keys to symbols.
Instance Method Details
#assert_valid_keys(valid_keys) ⇒ Object
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# File 'lib/active_support/core_ext/hash/keys.rb', line 46 def assert_valid_keys(valid_keys) unknown_keys = keys - valid_keys raise(ArgumentError, "Unknown key(s): #{unknown_keys.join(", ")}") unless unknown_keys.empty? end |
#stringify_keys ⇒ Object
Return a new hash with all keys converted to strings.
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# File 'lib/active_support/core_ext/hash/keys.rb', line 6 def stringify_keys inject({}) do |, (key, value)| [key.to_s] = value end end |
#stringify_keys! ⇒ Object
Destructively convert all keys to strings.
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# File 'lib/active_support/core_ext/hash/keys.rb', line 14 def stringify_keys! keys.each do |key| unless key.class.to_s == "String" # weird hack to make the tests run when string_ext_test.rb is also running self[key.to_s] = self[key] delete(key) end end self 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_support/core_ext/hash/keys.rb', line 25 def symbolize_keys inject({}) do |, (key, value)| [key.to_sym] = value end end |
#symbolize_keys! ⇒ Object Also known as: to_options!
Destructively convert all keys to symbols.
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# File 'lib/active_support/core_ext/hash/keys.rb', line 33 def symbolize_keys! keys.each do |key| unless key.is_a?(Symbol) self[key.to_sym] = self[key] delete(key) end end self end |