class DataMapper::Property::Flag
Public Class Methods
new(model, name, options = {})
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Calls superclass method
# File lib/dm-types/flag.rb, line 10 def initialize(model, name, options = {}) super @flag_map = {} flags = options.fetch(:flags, self.class.flags) flags.each_with_index do |flag, i| flag_map[i] = flag end end
Public Instance Methods
dump(value)
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# File lib/dm-types/flag.rb, line 37 def dump(value) unless value.nil? flags = Array(value).map { |flag| flag.to_sym } flags.uniq! flag = 0 flag_map.invert.values_at(*flags).each do |i| next if i.nil? flag += (1 << i) end flag end end
load(value)
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# File lib/dm-types/flag.rb, line 21 def load(value) return [] if value.nil? || value <= 0 begin matches = [] 0.upto(flag_map.size - 1) do |i| matches << flag_map[i] if value[i] == 1 end matches.compact rescue TypeError, Errno::EDOM [] end end
typecast(value)
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# File lib/dm-types/flag.rb, line 53 def typecast(value) case value when nil then nil when ::Array then value.map { |v| v.to_sym } else [value.to_sym] end end