Methods
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Instance Public 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
# File activesupport/lib/active_support/core_ext/hash/keys.rb, line 45
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.

# File activesupport/lib/active_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.

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

Return a new hash with all keys converted to symbols.

Also aliased as: to_options
# File activesupport/lib/active_support/core_ext/hash/keys.rb, line 22
def symbolize_keys
  inject({}) do |options, (key, value)|
    options[(key.to_sym rescue key) || key] = value
    options
  end
end
symbolize_keys!()

Destructively convert all keys to symbols.

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