37 lines
981 B
Ruby
37 lines
981 B
Ruby
module HasBitFlags
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extend ActiveSupport::Concern
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# NOTE: the ordering of attributes has to be fixed#
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# new attributes should be appended to the end.
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def has_bit_flags(attributes, field: :bit_flags)
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attributes.each.with_index do |attribute, i|
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bit_flag = 1 << i
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define_method(attribute) do
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send(field) & bit_flag > 0
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end
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define_method("#{attribute}?") do
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send(field) & bit_flag > 0
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end
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define_method("#{attribute}=") do |val|
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if val.to_s =~ /[t1y]/
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send("#{field}=", send(field) | bit_flag)
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else
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send("#{field}=", send(field) & ~bit_flag)
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end
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end
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end
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# bit_prefs_match
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define_singleton_method("#{field}_match") do |flag, value|
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value = value ? 1 : 0
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bits = attributes.length
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bit_index = bits - attributes.index(flag.to_s) - 1
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where(sanitize_sql(["get_bit(#{field}::bit(?), ?) = ?", bits, bit_index, value]))
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end
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end
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end
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