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# File 'lib/mongoid/state_bits.rb', line 20
def state_bits(params)
if params.is_a? Array
bits = params
default = 0
elsif params.is_a? Hash
bits = params.keys
default = bits.each_with_index.inject(0){|sum, vi| sum + (params[vi[0]] ? 2**vi[1] : 0)}
else
raise "Invalid state_bits params: should be Array or Hash"
end
field :state_bits, type: Integer, default: default
bits.each_with_index do |bit, index|
define_method "#{bit}=" do |bool|
if ["true", true, "1", 1].include?(bool)
self.state_bits |= 2**index
else
self.state_bits -= (self.state_bits & 2**index)
end
end
define_method bit do
self.state_bits & 2**index != 0
end
alias_method "#{bit}?", "#{bit}"
scope bit, ->{ where("this.state_bits & #{2**index}")}
scope "non#{bit}", ->{ where("(this.state_bits & #{2**index}) == 0")}
end
end
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