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module ActiveSupport #:nodoc:
module CoreExtensions #:nodoc:
module Hash #:nodoc:
module Keys
# Return a new hash with all keys converted to symbols.
def symbolize_keys
inject({}) do |options, (key, value)|
options[key.to_sym] = value
options
end
end
# Destructively convert all keys to symbols.
def symbolize_keys!
keys.each do |key|
unless key.is_a?(Symbol)
self[key.to_sym] = self[key]
delete(key)
end
end
self
end
alias_method :to_options, :symbolize_keys
alias_method :to_options!, :symbolize_keys!
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
end
end
end
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