lib/adequate_serialization/serializer.rb in adequate_serialization-1.0.0 vs lib/adequate_serialization/serializer.rb in adequate_serialization-1.0.1

@@ -1,9 +1,20 @@
 # frozen_string_literal: true
 
 module AdequateSerialization
   class Serializer
+    class ClassNotFoundError < Error
+      def initialize(serializer, serializes)
+        super(<<~MSG)
+          AdequateSerialization was unable to find the associated class to
+          serialize for #{serializer}. It expected to find a class named
+          #{serializes}. This could mean that it was incorrectly named, or that
+          you have yet to create the class that it will serialize.
+        MSG
+      end
+    end
+
     class << self
       def attributes
         @attributes ||= []
       end
 
@@ -17,9 +28,21 @@
 
         additions =
           names.map! { |name| Attribute.from(name, options.dup, &block) }
 
         @attributes = attributes + additions
+      end
+
+      def serializes
+        return @serializes if defined?(@serializes)
+
+        class_name = name.gsub(/Serializer\z/, '')
+
+        begin
+          @serializes = const_get(class_name)
+        rescue NameError
+          raise ClassNotFoundError.new(name, class_name)
+        end
       end
     end
 
     def serialize(model, opts = Options.null)
       self.class.attributes.each_with_object({}) do |attribute, response|