diff options
| -rw-r--r-- | activesupport/lib/active_support/core_ext/hash/keys.rb | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/activesupport/lib/active_support/core_ext/hash/keys.rb b/activesupport/lib/active_support/core_ext/hash/keys.rb index f104989df5..ff8e68faa1 100644 --- a/activesupport/lib/active_support/core_ext/hash/keys.rb +++ b/activesupport/lib/active_support/core_ext/hash/keys.rb @@ -38,11 +38,12 @@ module ActiveSupport #:nodoc: alias_method :to_options!, :symbolize_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 + # Note that keys are NOT treated indifferently, meaning if you use strings for keys but assert symbols # as keys, this will fail. - # examples: + # + # ==== 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") # => raises "ArgumentError: Unknown key(s): name, age" # { :name => "Rob", :age => "28" }.assert_valid_keys(:name, :age) # => passes, raises nothing def assert_valid_keys(*valid_keys) unknown_keys = keys - [valid_keys].flatten |