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require 'set'
module ActiveSupport #:nodoc:
module CoreExtensions #:nodoc:
module Hash #:nodoc:
# Return a hash that includes everything but the given keys. This is useful for
# limiting a set of parameters to everything but a few known toggles:
#
# @person.update_attributes(params[:person].except(:admin))
module Except
# Returns a new hash without the given keys.
def except(*keys)
dup.except!(*keys)
end
# Replaces the hash without only the given keys.
def except!(*keys)
keys.map! { |key| convert_key(key) } if respond_to?(:convert_key)
keys.each { |key| delete(key) }
self
end
end
end
end
end
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