Methods
Public Instance methods
assert_valid_keys(*valid_keys)

Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. Note that keys are NOT treated indifferently, meaning if you use strings for keys but assert symbols as keys, this will fail.

Examples

  { :name => "Rob", :years => "28" }.assert_valid_keys(:name, :age) # => raises "ArgumentError: Unknown key(s): years"
  { :name => "Rob", :age => "28" }.assert_valid_keys("name", "age") # => raises "ArgumentError: Unknown key(s): name, age"
  { :name => "Rob", :age => "28" }.assert_valid_keys(:name, :age) # => passes, raises nothing

[ show source ]

    # File activesupport/lib/active_support/core_ext/hash/keys.rb, line 45
45:         def assert_valid_keys(*valid_keys)
46:           unknown_keys = keys - [valid_keys].flatten
47:           raise(ArgumentError, "Unknown key(s): #{unknown_keys.join(", ")}") unless unknown_keys.empty?
48:         end
stringify_keys()

Return a new hash with all keys converted to strings.

[ show source ]

    # File activesupport/lib/active_support/core_ext/hash/keys.rb, line 6
 6:         def stringify_keys
 7:           inject({}) do |options, (key, value)|
 8:             options[key.to_s] = value
 9:             options
10:           end
11:         end
stringify_keys!()

Destructively convert all keys to strings.

[ show source ]

    # File activesupport/lib/active_support/core_ext/hash/keys.rb, line 14
14:         def stringify_keys!
15:           keys.each do |key|
16:             self[key.to_s] = delete(key)
17:           end
18:           self
19:         end
symbolize_keys()

Return a new hash with all keys converted to symbols.

This method is also aliased as to_options

[ show source ]

    # File activesupport/lib/active_support/core_ext/hash/keys.rb, line 22
22:         def symbolize_keys
23:           inject({}) do |options, (key, value)|
24:             options[(key.to_sym rescue key) || key] = value
25:             options
26:           end
27:         end
symbolize_keys!()

Destructively convert all keys to symbols.

This method is also aliased as to_options!

[ show source ]

    # File activesupport/lib/active_support/core_ext/hash/keys.rb, line 30
30:         def symbolize_keys!
31:           self.replace(self.symbolize_keys)
32:         end
to_options()

Alias for symbolize_keys

to_options!()

Alias for symbolize_keys!