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Contents
module Shamu
# Adds `to_bool` to strings, numbers, booleans and nil class to provide a
# consistent means of parsing values to a Boolean type.
module ToBoolExtension
# Extend common classes to add `to_model_id` method.
def self.extend!
String.include Strings
Integer.include Integers
TrueClass.include Boolean
FalseClass.include Boolean
NilClass.include Nil
end
# Add `to_model_id` to String types.
module Strings
def to_bool( default = false )
case self
when "1", /\At(rue)?\z/i, /\Ay(es)?\z/i then true
when "0", "", /\Af(alse)?\z/i, /\An(o)?\z/i then false
else default
end
end
end
# Add `to_model_id` to Integer types.
module Integers
def to_bool( default = false )
case self
when 1 then true
when 0 then false
else default
end
end
end
# Add `to_model_id` to Boolean types.
module Boolean
def to_bool( default = self )
self
end
end
# Add `to_model_id` to nil.
module Nil
def to_bool( default = self )
default
end
end
end
end
Shamu::ToBoolExtension.extend!
Version data entries
17 entries across 17 versions & 1 rubygems