diff options
Diffstat (limited to 'activesupport/lib/core_ext/hash_ext.rb')
| -rw-r--r-- | activesupport/lib/core_ext/hash_ext.rb | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/activesupport/lib/core_ext/hash_ext.rb b/activesupport/lib/core_ext/hash_ext.rb new file mode 100644 index 0000000000..90670c42c7 --- /dev/null +++ b/activesupport/lib/core_ext/hash_ext.rb @@ -0,0 +1,6 @@ +class Hash + def assert_valid_keys(valid_keys) + unknown_keys = keys - valid_keys + raise(ArgumentError, "Unknown key(s): #{unknown_keys.join(", ")}") unless unknown_keys.empty? + end +end
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