25 lines
762 B
Ruby
25 lines
762 B
Ruby
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require 'set'
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module ActiveSupport #:nodoc:
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module CoreExtensions #:nodoc:
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module Hash #:nodoc:
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# Return a hash that includes everything but the given keys. This is useful for
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# limiting a set of parameters to everything but a few known toggles:
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#
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# @person.update_attributes(params[:person].except(:admin))
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module Except
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# Returns a new hash without the given keys.
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def except(*keys)
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rejected = Set.new(respond_to?(:convert_key) ? keys.map { |key| convert_key(key) } : keys)
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reject { |key,| rejected.include?(key) }
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end
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# Replaces the hash without only the given keys.
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def except!(*keys)
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replace(except(*keys))
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end
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end
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end
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end
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end
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