updating deserialization implementation to not use module but a new serialization class instead

Author: joaomdmoura

lib/active_model/deserializer.rb

@@ -10,7 +10,7 @@ class Serializer
 
     class << self
       attr_accessor :_attributes
-      attr_accessor :_deserialize
+      attr_accessor :_params
       attr_accessor :_attributes_keys
       attr_accessor :_associations
       attr_accessor :_urls
@@ -27,15 +27,15 @@ def self.inherited(base)
       base._attributes = self._attributes.try(:dup)  || []
       base._associations = self._associations.try(:dup) || {}
       base._attributes_keys = self._attributes_keys.try(:dup) || {}
-      base._deserialize = self._attributes.try(:dup)  || []
+      base._params = self._attributes.try(:dup)  || []
       base._urls = []
       serializer_file = File.open(caller.first[/^[^:]+/])
       base._cache_digest = Digest::MD5.hexdigest(serializer_file.read)
     end
 
-    def self.deserialize(*attrs)
-      @_deserialize.concat attrs
-      @_deserialize.uniq!
+    def self.params(*attrs)
+      @_params.concat attrs
+      @_params.uniq!
     end
 
     def self.attributes(*attrs)
@@ -156,6 +156,11 @@ def self.root_name
       name.demodulize.underscore.sub(/_serializer$/, '') if name
     end
 
+    def self.deserialize(params)
+      object_class = root_name.split('_').first.camelize.constantize
+      object_class.find_or_initialize_by(params)
+    end
+
     attr_accessor :object, :root, :meta, :meta_key, :scope
 
     def initialize(object, options = {})
@@ -219,8 +224,7 @@ def each_association(&block)
               options.except(:serializer).merge(serializer_from_options(association_options))
             )
           rescue ActiveModel::Serializer::ArraySerializer::NoSerializerError
-            virtual_value = association_value
-            virtual_value = virtual_value.as_json if virtual_value.respond_to?(:as_json)
+            virtual_value = association_value.as_json if association_value.respond_to?(:as_json)
             association_options[:association_options][:virtual_value] = virtual_value
           end
         elsif !association_value.nil? && !association_value.instance_of?(Object)

lib/active_model/serializer.rb

@@ -3,7 +3,6 @@
 require 'active_model/serializer'
 require 'active_model/serializer/fieldset'
 require 'active_model/serializer/railtie'
-require 'active_model/deserializer'
 
 begin
   require 'action_controller'