class ActiveModel::Type::Float

bag.weight # => Float::NAN
bag.weight = “NaN”
bag.weight # => nil
bag.weight = “”
bag.weight # => 0.25
bag.weight = “0.25”
bag = BagOfCoffee.new
- "NaN" is cast to Float::NAN.
- "-Infinity" is cast to -Float::INFINITY.
- "Infinity" is cast to Float::INFINITY.
- Blank strings are cast to nil.
strings:
Values are cast using their to_f method, except for the following
end
attribute :weight, :float
include ActiveModel::Attributes
class BagOfCoffee
the :float key.
Attribute type for floating point numeric values. It is registered under
= Active Model Float Type

def cast_value(value) 

def cast_value(value)
  case value
  when ::Float then value
  when "Infinity" then ::Float::INFINITY
  when "-Infinity" then -::Float::INFINITY
  when "NaN" then ::Float::NAN
  else value.to_f
  end
end

def type 

def type
  :float
end

def type_cast_for_schema(value) 

def type_cast_for_schema(value)
  return "::Float::NAN" if value.try(:nan?)
  case value
  when ::Float::INFINITY then "::Float::INFINITY"
  when -::Float::INFINITY then "-::Float::INFINITY"
  else super
  end
end