Module ActiveSupport::CoreExtensions::Hash::Keys
In: vendor/rails/activesupport/lib/active_support/core_ext/hash/keys.rb

Methods

Public Instance methods

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

[Source]

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

Return a new hash with all keys converted to strings.

[Source]

    # File vendor/rails/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

Destructively convert all keys to strings.

[Source]

    # File vendor/rails/activesupport/lib/active_support/core_ext/hash/keys.rb, line 14
14:         def stringify_keys!
15:           keys.each do |key|
16:             unless key.class.to_s == "String" # weird hack to make the tests run when string_ext_test.rb is also running
17:               self[key.to_s] = self[key]
18:               delete(key)
19:             end
20:           end
21:           self
22:         end

Return a new hash with all keys converted to symbols.

[Source]

    # File vendor/rails/activesupport/lib/active_support/core_ext/hash/keys.rb, line 25
25:         def symbolize_keys
26:           inject({}) do |options, (key, value)|
27:             options[key.to_sym || key] = value
28:             options
29:           end
30:         end

Destructively convert all keys to symbols.

[Source]

    # File vendor/rails/activesupport/lib/active_support/core_ext/hash/keys.rb, line 33
33:         def symbolize_keys!
34:           self.replace(self.symbolize_keys)
35:         end
to_options()

Alias for symbolize_keys

to_options!()

Alias for symbolize_keys!

[Validate]