Active Model Float Type

Attribute type for floating point numeric values. It is registered under the :float key.

class BagOfCoffee
  include ActiveModel::Attributes

  attribute :weight, :float
end

Values are cast using their to_f method, except for the following strings:

  • Blank strings are cast to nil.

  • "Infinity" is cast to Float::INFINITY.

  • "-Infinity" is cast to -Float::INFINITY.

  • "NaN" is cast to Float::NAN.

    bag = BagOfCoffee.new

    bag.weight = “0.25” bag.weight # => 0.25

    bag.weight = “” bag.weight # => nil

    bag.weight = “NaN” bag.weight # => Float::NAN

Methods

Included Modules

Instance Public methods

type()

📝 Source code 
# File activemodel/lib/active_model/type/float.rb, line 39
      def type
        :float
      end
🔎 See on GitHub

type_cast_for_schema(value)

📝 Source code 
# File activemodel/lib/active_model/type/float.rb, line 43
      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
🔎 See on GitHub