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# frozen_string_literal: true
class Hash
# Returns a hash that includes everything except given keys.
# hash = { a: true, b: false, c: nil }
# hash.except(:c) # => { a: true, b: false }
# hash.except(:a, :b) # => { c: nil }
# hash # => { a: true, b: false, c: nil }
#
# This is useful for limiting a set of parameters to everything but a few known toggles:
# @person.update(params[:person].except(:admin))
def except(*keys)
dup.except!(*keys)
end
# Removes the given keys from hash and returns it.
# hash = { a: true, b: false, c: nil }
# hash.except!(:c) # => { a: true, b: false }
# hash # => { a: true, b: false }
def except!(*keys)
keys.each { |key| delete(key) }
self
end
end