Module: InactiveSupport::CoreExtensions::Hash::Keys

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

stringify_keys()

Return a new hash with all keys converted to strings.

[Source]

# File lib/inactive_support/core_ext/hash/keys.rb, line 6
        def stringify_keys
          inject({}) do |options, (key, value)|
            options[key.to_s] = value
            options
          end
        end

stringify_keys!()

Destructively convert all keys to strings.

[Source]

# File lib/inactive_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()

Return a new hash with all keys converted to symbols.

[Source]

# File lib/inactive_support/core_ext/hash/keys.rb, line 25
        def symbolize_keys
          inject({}) do |options, (key, value)|
            options[key.to_sym || key] = value
            options
          end
        end

symbolize_keys!()

Destructively convert all keys to symbols.

[Source]

# File lib/inactive_support/core_ext/hash/keys.rb, line 33
        def symbolize_keys!
          self.replace(self.symbolize_keys)
        end

to_options()

Alias for symbolize_keys

to_options!()

Alias for symbolize_keys!

Methods

Public Instance methods