method

assert_valid_keys

v4.2.7 - Show latest stable - 0 notes - Class: Hash

assert_valid_keys(*valid_keys) public

Validate all keys in a hash match *valid_keys, raising ArgumentError on a mismatch.

Note that keys are treated differently than HashWithIndifferentAccess, meaning that string and symbol keys will not match.

{ name: 'Rob', years: '28' }.assert_valid_keys(:name, :age) # => raises "ArgumentError: Unknown key: :years. Valid keys are: :name, :age"
{ name: 'Rob', age: '28' }.assert_valid_keys('name', 'age') # => raises "ArgumentError: Unknown key: :name. Valid keys are: '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 71
  def assert_valid_keys(*valid_keys)
    valid_keys.flatten!
    each_key do |k|
      unless valid_keys.include?(k)
        raise ArgumentError.new("Unknown key: #{k.inspect}. Valid keys are: #{valid_keys.map(&:inspect).join(', ')}")
      end
    end
  end

assert_valid_keys

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