Class: DataMapper::Types::Flag

  • Object
    • DataMapper::Types::Flag

Public Visibility

Public Class Method Summary

[](*flags)
dump(value, property)
flag_map=(value)
load(value, property)

Public Instance Methods Inherited from Object

validatable?

Public Class Method Details

[]

public [](*flags)
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# File 'dm-more/dm-types/lib/dm-types/flag.rb', line 24

def self.[](*flags)
  new(*flags)
end

dump

public dump(value, property)
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# File 'dm-more/dm-types/lib/dm-types/flag.rb', line 43

def self.dump(value, property)
  flags = value.is_a?(Array) ? value : [value]
  flags.map!{|f| f.to_sym}
  flag_map.invert.values_at(*flags.flatten).compact.inject(0) {|sum, i| sum + i}
end

flag_map

public flag_map=(value)
[View source] 


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# File 'dm-more/dm-types/lib/dm-types/flag.rb', line 9

def self.flag_map=(value)
  @flag_map = value
end

load

public load(value, property)
[View source] 


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# File 'dm-more/dm-types/lib/dm-types/flag.rb', line 28

def self.load(value, property)
  begin
    matches = []

    0.upto((Math.log(value) / Math.log(2)).ceil) do |i|
      pow = 2 ** i
      matches << flag_map[pow] if value & pow == pow
    end
    
    matches.compact
  rescue TypeError, Errno::EDOM
    []
  end
end