1 files changed, 25 insertions, 0 deletions
diff --git a/activemodel/lib/active_model/type/float.rb b/activemodel/lib/active_model/type/float.rb
new file mode 100644
index 0000000000..0f925bc7e1
--- /dev/null
+++ b/activemodel/lib/active_model/type/float.rb
@@ -0,0 +1,25 @@
+module ActiveModel
+  module Type
+    class Float < Value # :nodoc:
+      include Helpers::Numeric
+
+      def type
+        :float
+      end
+
+      alias serialize cast
+
+      private
+
+      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
+    end
+  end
+end