diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/hash/keys.rb')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/hash/keys.rb | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/activesupport/lib/active_support/core_ext/hash/keys.rb b/activesupport/lib/active_support/core_ext/hash/keys.rb index f35c2be4c2..3d41aa8572 100644 --- a/activesupport/lib/active_support/core_ext/hash/keys.rb +++ b/activesupport/lib/active_support/core_ext/hash/keys.rb @@ -1,5 +1,5 @@ class Hash - # Return a new hash with all keys converted using the block operation. + # Returns a new hash with all keys converted using the block operation. # # hash = { name: 'Rob', age: '28' } # @@ -22,7 +22,7 @@ class Hash self end - # Return a new hash with all keys converted to strings. + # Returns a new hash with all keys converted to strings. # # hash = { name: 'Rob', age: '28' } # @@ -38,7 +38,7 @@ class Hash transform_keys!{ |key| key.to_s } end - # Return a new hash with all keys converted to symbols, as long as + # Returns a new hash with all keys converted to symbols, as long as # they respond to +to_sym+. # # hash = { 'name' => 'Rob', 'age' => '28' } @@ -61,17 +61,19 @@ class Hash # 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. # - # { name: 'Rob', years: '28' }.assert_valid_keys(:name, :age) # => raises "ArgumentError: Unknown key: years" - # { name: 'Rob', age: '28' }.assert_valid_keys('name', 'age') # => raises "ArgumentError: Unknown key: name" + # { 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 def assert_valid_keys(*valid_keys) valid_keys.flatten! each_key do |k| - raise ArgumentError.new("Unknown key: #{k}") unless valid_keys.include?(k) + unless valid_keys.include?(k) + raise ArgumentError.new("Unknown key: #{k.inspect}. Valid keys are: #{valid_keys.map(&:inspect).join(', ')}") + end end end - # Return a new hash with all keys converted by the block operation. + # Returns a new hash with all keys converted by the block operation. # This includes the keys from the root hash and from all # nested hashes. # @@ -98,7 +100,7 @@ class Hash self end - # Return a new hash with all keys converted to strings. + # Returns a new hash with all keys converted to strings. # This includes the keys from the root hash and from all # nested hashes. # @@ -117,7 +119,7 @@ class Hash deep_transform_keys!{ |key| key.to_s } end - # Return a new hash with all keys converted to symbols, as long as + # Returns a new hash with all keys converted to symbols, as long as # they respond to +to_sym+. This includes the keys from the root hash # and from all nested hashes. # |