def validates_numericality_of(*attr_names)
configuration = { :on => :save, :only_integer => false, :allow_nil => false }
configuration.update(attr_names.extract_options!)
numericality_options = ALL_NUMERICALITY_CHECKS.keys & configuration.keys
(numericality_options - [ :odd, :even ]).each do |option|
raise ArgumentError, ":#{option} must be a number" unless configuration[option].is_a?(Numeric)
end
validates_each(attr_names,configuration) do |record, attr_name, value|
raw_value = record.send("#{attr_name}_before_type_cast") || value
next if configuration[:allow_nil] and raw_value.nil?
if configuration[:only_integer]
unless raw_value.to_s =~ /\A[+-]?\d+\Z/
record.errors.add(attr_name, :not_a_number, :value => raw_value, :default => configuration[:message])
next
end
raw_value = raw_value.to_i
else
begin
raw_value = Kernel.Float(raw_value)
rescue ArgumentError, TypeError
record.errors.add(attr_name, :not_a_number, :value => raw_value, :default => configuration[:message])
next
end
end
numericality_options.each do |option|
case option
when :odd, :even
unless raw_value.to_i.method(ALL_NUMERICALITY_CHECKS[option])[]
record.errors.add(attr_name, option, :value => raw_value, :default => configuration[:message])
end
else
record.errors.add(attr_name, option, :default => configuration[:message], :value => raw_value, :count => configuration[option]) unless raw_value.method(ALL_NUMERICALITY_CHECKS[option])[configuration[option]]
end
end
end
end