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module ActiveModel
module Type
# == Active \Model \Type \Boolean
#
# A class that behaves like a boolean type, including rules for coercion of user input.
#
# === Coercion
# Values set from user input will first be coerced into the appropriate ruby type.
# Coercion behavior is roughly mapped to Ruby's boolean semantics.
#
# - "false", "f" , "0", +0+ or any other value in +FALSE_VALUES+ will be coerced to +false+
# - Empty strings are coerced to +nil+
# - All other values will be coerced to +true+
class Boolean < Value
FALSE_VALUES = [false, 0, '0', 'f', 'F', 'false', 'FALSE', 'off', 'OFF'].to_set
def type # :nodoc:
:boolean
end
private
def cast_value(value)
if value == ''
nil
else
!FALSE_VALUES.include?(value)
end
end
end
end
end
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