1 module ActiveSupport
#:nodoc:
2 module CoreExtensions
#:nodoc:
5 # Return a new hash with all keys converted to strings.
7 inject({}) do |options
, (key
, value
)|
8 options
[key
.to_s
] = value
13 # Destructively convert all keys to strings.
16 self[key
.to_s
] = delete(key
)
21 # Return a new hash with all keys converted to symbols.
23 inject({}) do |options
, (key
, value
)|
24 options
[(key
.to_sym
rescue key
) || key
] = value
29 # Destructively convert all keys to symbols.
31 self.replace(self.symbolize_keys
)
34 alias_method
:to_options, :symbolize_keys
35 alias_method
:to_options!, :symbolize_keys!
37 # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch.
38 # Note that keys are NOT treated indifferently, meaning if you use strings for keys but assert symbols
39 # as keys, this will fail.
42 # { :name => "Rob", :years => "28" }.assert_valid_keys(:name, :age) # => raises "ArgumentError: Unknown key(s): years"
43 # { :name => "Rob", :age => "28" }.assert_valid_keys("name", "age") # => raises "ArgumentError: Unknown key(s): name, age"
44 # { :name => "Rob", :age => "28" }.assert_valid_keys(:name, :age) # => passes, raises nothing
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
?