Refactoring

.gitignore

@@ -26,8 +26,7 @@ pkg
 #*.tmproj
 #tmtags
 
-# For vim:
-#*.swp
+*.swp
 
 # For redcar:
 #.redcar

lib/fast_jsonapi/object_serializer.rb

@@ -30,47 +30,45 @@ module FastJsonapi
       end
 
       # Set record_type based on the name of the serializer class
-      set_type default_record_type if default_record_type
+      set_type(reflected_record_type) if reflected_record_type
     end
 
     def initialize(resource, options = {})
-      if options.present?
-        @meta_tags = options[:meta]
-        @includes = options[:include].delete_if(&:blank?) if options[:include].present?
-        self.class.has_permitted_includes(@includes) if @includes.present?
-        @known_included_objects = {} # keep track of inc objects that have already been serialized
-      end
-      # @records if enumerables like Array, ActiveRecord::Relation but if Struct just make it a @record
-      if resource.respond_to?(:each) && !resource.respond_to?(:each_pair)
-        @records = resource
-      else
-        @record = resource
-      end
+      process_options(options)
+
+      @resource = resource
     end
 
     def serializable_hash
+      return hash_for_collection if is_collection?(@resource)
+
+      hash_for_one_record
+    end
+
+    def hash_for_one_record
       serializable_hash = { data: nil }
-      serializable_hash[:meta] = @meta_tags if @meta_tags.present?
-      return hash_for_one_record(serializable_hash) if @record
-      return hash_for_multiple_records(serializable_hash) if @records
+      serializable_hash[:meta] = @meta if @meta.present?
+
+      return serializable_hash unless @resource
+
+      serializable_hash[:data] = self.class.record_hash(@resource)
+      serializable_hash[:included] = self.class.get_included_records(@resource, @includes, @known_included_objects) if @includes.present?
       serializable_hash
     end
 
-    def hash_for_one_record(serializable_hash)
-      serializable_hash[:data] = self.class.record_hash(@record)
-      serializable_hash[:included] = self.class.get_included_records(@record, @includes, @known_included_objects) if @includes.present?
-      serializable_hash
-    end
+    def hash_for_collection
+      serializable_hash = {}
 
-    def hash_for_multiple_records(serializable_hash)
       data = []
       included = []
-      @records.each do |record|
+      @resource.each do |record|
         data << self.class.record_hash(record)
         included.concat self.class.get_included_records(record, @includes, @known_included_objects) if @includes.present?
       end
+
       serializable_hash[:data] = data
       serializable_hash[:included] = included if @includes.present?
+      serializable_hash[:meta] = @meta if @meta.present?
       serializable_hash
     end
 
@@ -78,23 +76,55 @@ module FastJsonapi
       self.class.to_json(serializable_hash)
     end
 
+    private
+
+    def process_options(options)
+      return if options.blank?
+
+      @known_included_objects = {}
+      @meta = options[:meta]
+
+      if options[:include].present?
+        @includes = options[:include].delete_if(&:blank?)
+        validate_includes!(@includes)
+      end
+    end
+
+    def validate_includes!(includes)
+      return if includes.blank?
+
+      existing_relationships = self.class.relationships_to_serialize.keys.to_set
+
+      unless existing_relationships.superset?(includes.to_set)
+        raise ArgumentError, "One of keys from #{includes} is not specified as a relationship on the serializer"
+      end
+    end
+
+    def is_collection?(resource)
+      resource.respond_to?(:each) && !resource.respond_to?(:each_pair)
+    end
+
     class_methods do
       def use_hyphen
         @hyphenated = true
       end
 
-      def set_type(type_name)
-        self.record_type = type_name
-        if @hyphenated
-          self.record_type = type_name.to_s.dasherize.to_sym
-        end
+      def set_type(type)
+        return unless type
+
+        type = type.to_s.underscore
+        type = type.dasherize if @hyphenated
+
+        self.record_type = type.to_sym
       end
 
-      def default_record_type
-        if self.name.end_with?('Serializer')
-          class_name = self.name.demodulize
-          range_end = class_name.rindex('Serializer')
-          class_name[0...range_end].underscore.to_sym
+      def reflected_record_type
+        return @reflected_record_type if defined?(@reflected_record_type)
+
+        @reflected_record_type ||= begin
+          if self.name.end_with?('Serializer')
+            self.name.split('::').last.chomp('Serializer').underscore.to_sym
+          end
         end
       end
 

lib/fast_jsonapi/serialization_core.rb

@@ -88,17 +88,6 @@ module FastJsonapi
           end
         end
       end
-
-      def has_permitted_includes(requested_includes)
-        # requested includes should be within relationships defined on serializer
-        allowed_includes = @relationships_to_serialize.keys
-        intersection = allowed_includes & requested_includes
-        if intersection.sort == requested_includes.sort
-          true
-        else
-          raise ArgumentError, "One of keys from #{requested_includes} is not specified as a relationship on the serializer"
-        end
-      end
     end
   end
 end

spec/shared/contexts/movie_context.rb

@@ -123,9 +123,7 @@ RSpec.shared_context 'movie class' do
       :id, :name, :release_year, :actor_ids, :actors, :owner_id, :owner, :movie_type_id
     )
 
-    ActorStruct = Struct.new(
-      :id, :name, :email
-    )
+    ActorStruct = Struct.new(:id, :name, :email)
   end
 
   after(:context) do
@@ -151,10 +149,7 @@ RSpec.shared_context 'movie class' do
     actors = []
 
     3.times.each do |id|
-      a = ActorStruct.new
-      a[:id] = id
-      a[:name] = id.to_s
-      actors << a
+      actors << ActorStruct.new(id, id.to_s, id.to_s)
     end
 
     m = MovieStruct.new