From 449c1bf05fb6144b39fd1523eb7aa96f9af81d0a Mon Sep 17 00:00:00 2001
From: Erol <erol.fornoles@gmail.com>
Date: Fri, 13 Jul 2018 12:35:43 +0800
Subject: [PATCH 01/10] Allow passing procs with variable arguments when
 declaring an attribute

---
 lib/fast_jsonapi/attribute.rb                    |  4 ++--
 spec/lib/object_serializer_class_methods_spec.rb | 16 ++++++++++++++++
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/lib/fast_jsonapi/attribute.rb b/lib/fast_jsonapi/attribute.rb
index c26bf19..9acc3e0 100644
--- a/lib/fast_jsonapi/attribute.rb
+++ b/lib/fast_jsonapi/attribute.rb
@@ -11,7 +11,7 @@ module FastJsonapi
     def serialize(record, serialization_params, output_hash)
       if include_attribute?(record, serialization_params)
         output_hash[key] = if method.is_a?(Proc)
-          method.arity == 1 ? method.call(record) : method.call(record, serialization_params)
+          method.arity.abs == 1 ? method.call(record) : method.call(record, serialization_params)
         else
           record.public_send(method)
         end
@@ -26,4 +26,4 @@ module FastJsonapi
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/lib/object_serializer_class_methods_spec.rb b/spec/lib/object_serializer_class_methods_spec.rb
index 85346f0..761900e 100644
--- a/spec/lib/object_serializer_class_methods_spec.rb
+++ b/spec/lib/object_serializer_class_methods_spec.rb
@@ -230,6 +230,22 @@ describe FastJsonapi::ObjectSerializer do
         expect(serializable_hash[:data][:attributes][:title_with_year]).to eq "#{movie.name} (#{movie.release_year})"
       end
     end
+
+    context 'with &:proc' do
+      before do
+        movie.release_year = 2008
+        MovieSerializer.attribute :released_in_year, &:release_year
+      end
+
+      after do
+        MovieSerializer.attributes_to_serialize.delete(:released_in_year)
+      end
+
+      it 'returns correct hash when serializable_hash is called' do
+        expect(serializable_hash[:data][:attributes][:name]).to eq movie.name
+        expect(serializable_hash[:data][:attributes][:released_in_year]).to eq movie.release_year
+      end
+    end
   end
 
   describe '#link' do

From e05193fb5e6de1c901f95bfce76523fd5de4b0ba Mon Sep 17 00:00:00 2001
From: Erol <erol.fornoles@gmail.com>
Date: Sat, 14 Jul 2018 17:11:24 +0800
Subject: [PATCH 02/10] Add spec for proc methods with optional arguments

---
 spec/lib/object_serializer_class_methods_spec.rb | 3 ++-
 spec/shared/contexts/movie_context.rb            | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/spec/lib/object_serializer_class_methods_spec.rb b/spec/lib/object_serializer_class_methods_spec.rb
index 761900e..3c477c3 100644
--- a/spec/lib/object_serializer_class_methods_spec.rb
+++ b/spec/lib/object_serializer_class_methods_spec.rb
@@ -235,6 +235,7 @@ describe FastJsonapi::ObjectSerializer do
       before do
         movie.release_year = 2008
         MovieSerializer.attribute :released_in_year, &:release_year
+        MovieSerializer.attribute :name, &:local_name
       end
 
       after do
@@ -242,7 +243,7 @@ describe FastJsonapi::ObjectSerializer do
       end
 
       it 'returns correct hash when serializable_hash is called' do
-        expect(serializable_hash[:data][:attributes][:name]).to eq movie.name
+        expect(serializable_hash[:data][:attributes][:name]).to eq "english #{movie.name}"
         expect(serializable_hash[:data][:attributes][:released_in_year]).to eq movie.release_year
       end
     end
diff --git a/spec/shared/contexts/movie_context.rb b/spec/shared/contexts/movie_context.rb
index bbd89a9..9061226 100644
--- a/spec/shared/contexts/movie_context.rb
+++ b/spec/shared/contexts/movie_context.rb
@@ -54,6 +54,10 @@ RSpec.shared_context 'movie class' do
         "#{id}"
       end
 
+      def local_name(locale = :english)
+        "#{locale} #{name}"
+      end
+
       def url
         "http://movies.com/#{id}"
       end

From 41c1e0a106d97de9f48fb6ce427b921c4a8a5d9d Mon Sep 17 00:00:00 2001
From: Erol <erol.fornoles@gmail.com>
Date: Mon, 16 Jul 2018 06:19:54 +0800
Subject: [PATCH 03/10] Add proc shortcut use case to README

---
 README.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/README.md b/README.md
index f4333d1..c812eac 100644
--- a/README.md
+++ b/README.md
@@ -207,6 +207,18 @@ class MovieSerializer
 end
 ```
 
+Attributes can also use a different name by passing the original method or accessor with a proc shortcut:
+
+```ruby
+class MovieSerializer
+  include FastJsonapi::ObjectSerializer
+
+  attributes :name
+
+  attribute :released_in_year, &:year
+end
+```
+
 ### Links Per Object
 Links are defined in FastJsonapi using the `link` method. By default, link are read directly from the model property of the same name.In this example, `public_url` is expected to be a property of the object being serialized.
 

From a363c90bfbc39eee08f7d827ff27a6eea538cbff Mon Sep 17 00:00:00 2001
From: Erol <erol.fornoles@gmail.com>
Date: Mon, 16 Jul 2018 17:34:42 +0800
Subject: [PATCH 04/10] Allow the serializer to return sparse fieldsets

---
 lib/fast_jsonapi/fieldset.rb              |  7 +++++
 lib/fast_jsonapi/object_serializer.rb     | 25 +++++++++++++---
 lib/fast_jsonapi/serialization_core.rb    | 29 ++++++++++--------
 spec/lib/object_serializer_fields_spec.rb | 36 +++++++++++++++++++++++
 spec/lib/serialization_core_spec.rb       |  2 +-
 5 files changed, 82 insertions(+), 17 deletions(-)
 create mode 100644 lib/fast_jsonapi/fieldset.rb
 create mode 100644 spec/lib/object_serializer_fields_spec.rb

diff --git a/lib/fast_jsonapi/fieldset.rb b/lib/fast_jsonapi/fieldset.rb
new file mode 100644
index 0000000..0788a67
--- /dev/null
+++ b/lib/fast_jsonapi/fieldset.rb
@@ -0,0 +1,7 @@
+module FastJsonapi
+  class Fieldset
+    def initialize(fields)
+      @fields = fields
+    end
+  end
+end
diff --git a/lib/fast_jsonapi/object_serializer.rb b/lib/fast_jsonapi/object_serializer.rb
index 90771b4..cbadf40 100644
--- a/lib/fast_jsonapi/object_serializer.rb
+++ b/lib/fast_jsonapi/object_serializer.rb
@@ -7,6 +7,7 @@ require 'fast_jsonapi/attribute'
 require 'fast_jsonapi/relationship'
 require 'fast_jsonapi/link'
 require 'fast_jsonapi/serialization_core'
+require 'fast_jsonapi/fieldset'
 
 module FastJsonapi
   module ObjectSerializer
@@ -41,8 +42,8 @@ module FastJsonapi
 
       return serializable_hash unless @resource
 
-      serializable_hash[:data] = self.class.record_hash(@resource, @params)
-      serializable_hash[:included] = self.class.get_included_records(@resource, @includes, @known_included_objects, @params) if @includes.present?
+      serializable_hash[:data] = self.class.record_hash(@resource, @fieldsets[self.class.reflected_record_type.to_sym], @params)
+      serializable_hash[:included] = self.class.get_included_records(@resource, @includes, @known_included_objects, @fieldsets, @params) if @includes.present?
       serializable_hash
     end
 
@@ -51,9 +52,10 @@ module FastJsonapi
 
       data = []
       included = []
+      fieldset = @fieldsets[self.class.reflected_record_type.to_sym]
       @resource.each do |record|
-        data << self.class.record_hash(record, @params)
-        included.concat self.class.get_included_records(record, @includes, @known_included_objects, @params) if @includes.present?
+        data << self.class.record_hash(record, fieldset, @params)
+        included.concat self.class.get_included_records(record, @includes, @known_included_objects, @fieldsets, @params) if @includes.present?
       end
 
       serializable_hash[:data] = data
@@ -70,6 +72,8 @@ module FastJsonapi
     private
 
     def process_options(options)
+      @fieldsets = deep_symbolize(options[:fields].presence || {})
+
       return if options.blank?
 
       @known_included_objects = {}
@@ -85,6 +89,18 @@ module FastJsonapi
       end
     end
 
+    def deep_symbolize(collection)
+      if collection.is_a? Hash
+        Hash[collection.map do |k, v|
+          [k.to_sym, deep_symbolize(v)]
+        end]
+      elsif collection.is_a? Array
+        collection.map { |i| deep_symbolize(i) }
+      else
+        collection.to_sym
+      end
+    end
+
     def is_collection?(resource, force_is_collection = nil)
       return force_is_collection unless force_is_collection.nil?
 
@@ -104,6 +120,7 @@ module FastJsonapi
         subclass.race_condition_ttl = race_condition_ttl
         subclass.data_links = data_links
         subclass.cached = cached
+        subclass.fieldset = fieldset.dup if fieldset.present?
       end
 
       def reflected_record_type
diff --git a/lib/fast_jsonapi/serialization_core.rb b/lib/fast_jsonapi/serialization_core.rb
index 11257aa..03df974 100644
--- a/lib/fast_jsonapi/serialization_core.rb
+++ b/lib/fast_jsonapi/serialization_core.rb
@@ -21,7 +21,8 @@ module FastJsonapi
                       :cache_length,
                       :race_condition_ttl,
                       :cached,
-                      :data_links
+                      :data_links,
+                      :fieldset
       end
     end
 
@@ -40,27 +41,30 @@ module FastJsonapi
         end
       end
 
-      def attributes_hash(record, params = {})
-        attributes_to_serialize.each_with_object({}) do |(_k, attribute), hash|
+      def attributes_hash(record, fieldset = nil, params = {})
+        attributes = attributes_to_serialize
+        attributes = attributes.slice(*fieldset) if fieldset.present?
+        attributes.each_with_object({}) do |(_k, attribute), hash|
           attribute.serialize(record, params, hash)
         end
       end
 
-      def relationships_hash(record, relationships = nil, params = {})
+      def relationships_hash(record, relationships = nil, fieldset = nil, params = {})
         relationships = relationships_to_serialize if relationships.nil?
+        relationships = relationships.slice(*fieldset) if fieldset.present?
 
         relationships.each_with_object({}) do |(_k, relationship), hash|
           relationship.serialize(record, params, hash)
         end
       end
 
-      def record_hash(record, params = {})
+      def record_hash(record, fieldset, params = {})
         if cached
           record_hash = Rails.cache.fetch(record.cache_key, expires_in: cache_length, race_condition_ttl: race_condition_ttl) do
             temp_hash = id_hash(id_from_record(record), record_type, true)
-            temp_hash[:attributes] = attributes_hash(record, params) if attributes_to_serialize.present?
+            temp_hash[:attributes] = attributes_hash(record, fieldset, params) if attributes_to_serialize.present?
             temp_hash[:relationships] = {}
-            temp_hash[:relationships] = relationships_hash(record, cachable_relationships_to_serialize, params) if cachable_relationships_to_serialize.present?
+            temp_hash[:relationships] = relationships_hash(record, cachable_relationships_to_serialize, fieldset, params) if cachable_relationships_to_serialize.present?
             temp_hash[:links] = links_hash(record, params) if data_links.present?
             temp_hash
           end
@@ -68,8 +72,8 @@ module FastJsonapi
           record_hash
         else
           record_hash = id_hash(id_from_record(record), record_type, true)
-          record_hash[:attributes] = attributes_hash(record, params) if attributes_to_serialize.present?
-          record_hash[:relationships] = relationships_hash(record, nil, params) if relationships_to_serialize.present?
+          record_hash[:attributes] = attributes_hash(record, fieldset, params) if attributes_to_serialize.present?
+          record_hash[:relationships] = relationships_hash(record, nil, fieldset, params) if relationships_to_serialize.present?
           record_hash[:links] = links_hash(record, params) if data_links.present?
           record_hash
         end
@@ -100,7 +104,7 @@ module FastJsonapi
       end
 
       # includes handler
-      def get_included_records(record, includes_list, known_included_objects, params = {})
+      def get_included_records(record, includes_list, known_included_objects, fieldsets, params = {})
         return unless includes_list.present?
 
         includes_list.sort.each_with_object([]) do |include_item, included_records|
@@ -120,7 +124,7 @@ module FastJsonapi
 
             included_objects.each do |inc_obj|
               if remaining_items(items)
-                serializer_records = serializer.get_included_records(inc_obj, remaining_items(items), known_included_objects)
+                serializer_records = serializer.get_included_records(inc_obj, remaining_items(items), known_included_objects, fieldsets)
                 included_records.concat(serializer_records) unless serializer_records.empty?
               end
 
@@ -128,7 +132,8 @@ module FastJsonapi
               next if known_included_objects.key?(code)
 
               known_included_objects[code] = inc_obj
-              included_records << serializer.record_hash(inc_obj, params)
+
+              included_records << serializer.record_hash(inc_obj, fieldsets[serializer.reflected_record_type], params)
             end
           end
         end
diff --git a/spec/lib/object_serializer_fields_spec.rb b/spec/lib/object_serializer_fields_spec.rb
new file mode 100644
index 0000000..f44ab2e
--- /dev/null
+++ b/spec/lib/object_serializer_fields_spec.rb
@@ -0,0 +1,36 @@
+require 'spec_helper'
+
+describe FastJsonapi::ObjectSerializer do
+  include_context 'movie class'
+
+  let(:fields) do
+    {
+      movie: %i[name actors],
+      actor: %i[name agency]
+    }
+  end
+
+  it 'only returns specified fields' do
+    hash = MovieSerializer.new(movie, fields: fields).serializable_hash
+
+    expect(hash[:data][:attributes].keys.sort).to eq %i[name]
+  end
+
+  it 'only returns specified relationships' do
+    hash = MovieSerializer.new(movie, fields: fields).serializable_hash
+
+    expect(hash[:data][:relationships].keys.sort).to eq %i[actors]
+  end
+
+  it 'only returns specified fields for included relationships' do
+    hash = MovieSerializer.new(movie, fields: fields, include: %i[actors]).serializable_hash
+
+    expect(hash[:included].first[:attributes].keys.sort).to eq %i[name]
+  end
+
+  it 'only returns specified relationships for included relationships' do
+    hash = MovieSerializer.new(movie, fields: fields, include: %i[actors]).serializable_hash
+
+    expect(hash[:included].first[:relationships].keys.sort).to eq %i[agency]
+  end
+end
diff --git a/spec/lib/serialization_core_spec.rb b/spec/lib/serialization_core_spec.rb
index d161e3f..adf33df 100644
--- a/spec/lib/serialization_core_spec.rb
+++ b/spec/lib/serialization_core_spec.rb
@@ -64,7 +64,7 @@ describe FastJsonapi::ObjectSerializer do
       known_included_objects = {}
       included_records = []
       [movie, movie].each do |record|
-        included_records.concat MovieSerializer.send(:get_included_records, record, includes_list, known_included_objects, nil)
+        included_records.concat MovieSerializer.send(:get_included_records, record, includes_list, known_included_objects, {}, nil)
       end
       expect(included_records.size).to eq 3
     end

From e683bbfb783b16fe3a220ea44eb876d2f1770ef9 Mon Sep 17 00:00:00 2001
From: Erol <erol.fornoles@gmail.com>
Date: Mon, 16 Jul 2018 17:59:54 +0800
Subject: [PATCH 05/10] Update spec with included documents with no explicitly
 given fields

---
 spec/lib/object_serializer_fields_spec.rb | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/spec/lib/object_serializer_fields_spec.rb b/spec/lib/object_serializer_fields_spec.rb
index f44ab2e..913ba83 100644
--- a/spec/lib/object_serializer_fields_spec.rb
+++ b/spec/lib/object_serializer_fields_spec.rb
@@ -5,7 +5,7 @@ describe FastJsonapi::ObjectSerializer do
 
   let(:fields) do
     {
-      movie: %i[name actors],
+      movie: %i[name actors advertising_campaign],
       actor: %i[name agency]
     }
   end
@@ -19,7 +19,7 @@ describe FastJsonapi::ObjectSerializer do
   it 'only returns specified relationships' do
     hash = MovieSerializer.new(movie, fields: fields).serializable_hash
 
-    expect(hash[:data][:relationships].keys.sort).to eq %i[actors]
+    expect(hash[:data][:relationships].keys.sort).to eq %i[actors advertising_campaign]
   end
 
   it 'only returns specified fields for included relationships' do
@@ -29,8 +29,20 @@ describe FastJsonapi::ObjectSerializer do
   end
 
   it 'only returns specified relationships for included relationships' do
-    hash = MovieSerializer.new(movie, fields: fields, include: %i[actors]).serializable_hash
+    hash = MovieSerializer.new(movie, fields: fields, include: %i[actors advertising_campaign]).serializable_hash
 
     expect(hash[:included].first[:relationships].keys.sort).to eq %i[agency]
   end
+
+  it 'returns all fields for included relationships when no explicit fields have been specified' do
+    hash = MovieSerializer.new(movie, fields: fields, include: %i[actors advertising_campaign]).serializable_hash
+
+    expect(hash[:included][3][:attributes].keys.sort).to eq %i[id name]
+  end
+
+  it 'returns all fields for included relationships when no explicit fields have been specified' do
+    hash = MovieSerializer.new(movie, fields: fields, include: %i[actors advertising_campaign]).serializable_hash
+
+    expect(hash[:included][3][:relationships].keys.sort).to eq %i[movie]
+  end
 end

From ab652c44005b1782837a513b7a3b63a901848f7e Mon Sep 17 00:00:00 2001
From: Erol <erol.fornoles@gmail.com>
Date: Tue, 17 Jul 2018 11:01:33 +0800
Subject: [PATCH 06/10] Remove unused code

---
 lib/fast_jsonapi/fieldset.rb           | 7 -------
 lib/fast_jsonapi/object_serializer.rb  | 2 --
 lib/fast_jsonapi/serialization_core.rb | 3 +--
 3 files changed, 1 insertion(+), 11 deletions(-)
 delete mode 100644 lib/fast_jsonapi/fieldset.rb

diff --git a/lib/fast_jsonapi/fieldset.rb b/lib/fast_jsonapi/fieldset.rb
deleted file mode 100644
index 0788a67..0000000
--- a/lib/fast_jsonapi/fieldset.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-module FastJsonapi
-  class Fieldset
-    def initialize(fields)
-      @fields = fields
-    end
-  end
-end
diff --git a/lib/fast_jsonapi/object_serializer.rb b/lib/fast_jsonapi/object_serializer.rb
index cbadf40..7d58e67 100644
--- a/lib/fast_jsonapi/object_serializer.rb
+++ b/lib/fast_jsonapi/object_serializer.rb
@@ -7,7 +7,6 @@ require 'fast_jsonapi/attribute'
 require 'fast_jsonapi/relationship'
 require 'fast_jsonapi/link'
 require 'fast_jsonapi/serialization_core'
-require 'fast_jsonapi/fieldset'
 
 module FastJsonapi
   module ObjectSerializer
@@ -120,7 +119,6 @@ module FastJsonapi
         subclass.race_condition_ttl = race_condition_ttl
         subclass.data_links = data_links
         subclass.cached = cached
-        subclass.fieldset = fieldset.dup if fieldset.present?
       end
 
       def reflected_record_type
diff --git a/lib/fast_jsonapi/serialization_core.rb b/lib/fast_jsonapi/serialization_core.rb
index 03df974..8b3ea11 100644
--- a/lib/fast_jsonapi/serialization_core.rb
+++ b/lib/fast_jsonapi/serialization_core.rb
@@ -21,8 +21,7 @@ module FastJsonapi
                       :cache_length,
                       :race_condition_ttl,
                       :cached,
-                      :data_links,
-                      :fieldset
+                      :data_links
       end
     end
 

From e2bf5411a2d3bace9dafac5f1a3c9694a7735d12 Mon Sep 17 00:00:00 2001
From: Erol <erol.fornoles@gmail.com>
Date: Tue, 17 Jul 2018 11:54:48 +0800
Subject: [PATCH 07/10] Set the record type for inherited serializers

---
 lib/fast_jsonapi/object_serializer.rb          | 1 +
 spec/lib/object_serializer_inheritance_spec.rb | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/lib/fast_jsonapi/object_serializer.rb b/lib/fast_jsonapi/object_serializer.rb
index 7d58e67..2cc1b35 100644
--- a/lib/fast_jsonapi/object_serializer.rb
+++ b/lib/fast_jsonapi/object_serializer.rb
@@ -119,6 +119,7 @@ module FastJsonapi
         subclass.race_condition_ttl = race_condition_ttl
         subclass.data_links = data_links
         subclass.cached = cached
+        subclass.set_type(subclass.reflected_record_type) if subclass.reflected_record_type
       end
 
       def reflected_record_type
diff --git a/spec/lib/object_serializer_inheritance_spec.rb b/spec/lib/object_serializer_inheritance_spec.rb
index 8cf5b53..beb7487 100644
--- a/spec/lib/object_serializer_inheritance_spec.rb
+++ b/spec/lib/object_serializer_inheritance_spec.rb
@@ -95,6 +95,11 @@ describe FastJsonapi::ObjectSerializer do
     has_one :account
   end
 
+  it 'sets the correct record type' do
+    expect(EmployeeSerializer.reflected_record_type).to eq :employee
+    expect(EmployeeSerializer.record_type).to eq :employee
+  end
+
   context 'when testing inheritance of attributes' do
 
     it 'includes parent attributes' do

From fa194133fa5931ae5c70c6ae31c13547ff16fc81 Mon Sep 17 00:00:00 2001
From: Erol <erol.fornoles@gmail.com>
Date: Tue, 17 Jul 2018 11:56:36 +0800
Subject: [PATCH 08/10] Use record type instead of reflected record type

---
 lib/fast_jsonapi/object_serializer.rb  | 4 ++--
 lib/fast_jsonapi/serialization_core.rb | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/fast_jsonapi/object_serializer.rb b/lib/fast_jsonapi/object_serializer.rb
index 2cc1b35..7f740c8 100644
--- a/lib/fast_jsonapi/object_serializer.rb
+++ b/lib/fast_jsonapi/object_serializer.rb
@@ -41,7 +41,7 @@ module FastJsonapi
 
       return serializable_hash unless @resource
 
-      serializable_hash[:data] = self.class.record_hash(@resource, @fieldsets[self.class.reflected_record_type.to_sym], @params)
+      serializable_hash[:data] = self.class.record_hash(@resource, @fieldsets[self.class.record_type.to_sym], @params)
       serializable_hash[:included] = self.class.get_included_records(@resource, @includes, @known_included_objects, @fieldsets, @params) if @includes.present?
       serializable_hash
     end
@@ -51,7 +51,7 @@ module FastJsonapi
 
       data = []
       included = []
-      fieldset = @fieldsets[self.class.reflected_record_type.to_sym]
+      fieldset = @fieldsets[self.class.record_type.to_sym]
       @resource.each do |record|
         data << self.class.record_hash(record, fieldset, @params)
         included.concat self.class.get_included_records(record, @includes, @known_included_objects, @fieldsets, @params) if @includes.present?
diff --git a/lib/fast_jsonapi/serialization_core.rb b/lib/fast_jsonapi/serialization_core.rb
index 8b3ea11..6ec069a 100644
--- a/lib/fast_jsonapi/serialization_core.rb
+++ b/lib/fast_jsonapi/serialization_core.rb
@@ -132,7 +132,7 @@ module FastJsonapi
 
               known_included_objects[code] = inc_obj
 
-              included_records << serializer.record_hash(inc_obj, fieldsets[serializer.reflected_record_type], params)
+              included_records << serializer.record_hash(inc_obj, fieldsets[serializer.record_type], params)
             end
           end
         end

From 9aec7c58ede732b19643309383c0e74d289efeb9 Mon Sep 17 00:00:00 2001
From: Erol <erol.fornoles@gmail.com>
Date: Tue, 17 Jul 2018 12:02:58 +0800
Subject: [PATCH 09/10] Add README instructions for using sparse fieldsets

---
 README.md | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/README.md b/README.md
index c812eac..a03e1a8 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,7 @@ Fast JSON API serialized 250 records in 3.01 ms
   * [Params](#params)
   * [Conditional Attributes](#conditional-attributes)
   * [Conditional Relationships](#conditional-relationships)
+  * [Sparse Fieldsets](#sparse-fieldsets)
 * [Contributing](#contributing)
 
 
@@ -388,6 +389,21 @@ serializer = MovieSerializer.new(movie, { params: { admin: current_user.admin? }
 serializer.serializable_hash
 ```
 
+### Sparse Fieldsets
+
+Attributes and relationships can be selectively returned per record type by using the `fields` option.
+
+```ruby
+class MovieSerializer
+  include FastJsonapi::ObjectSerializer
+
+  attributes :name, :year
+end
+
+serializer = MovieSerializer.new(movie, { fields: { movie: [:name] } })
+serializer.serializable_hash
+```
+
 ### Customizable Options
 
 Option | Purpose | Example

From 115a01a7c22564625c9fbbbc181715a7239f1eb4 Mon Sep 17 00:00:00 2001
From: Shishir Kakaraddi <skakaraddi@netflix.com>
Date: Mon, 16 Jul 2018 21:52:58 -0700
Subject: [PATCH 10/10] bump up version to 1.3

---
 lib/fast_jsonapi/version.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/fast_jsonapi/version.rb b/lib/fast_jsonapi/version.rb
index 3c96404..f17716e 100644
--- a/lib/fast_jsonapi/version.rb
+++ b/lib/fast_jsonapi/version.rb
@@ -1,3 +1,3 @@
 module FastJsonapi
-  VERSION = "1.2"
+  VERSION = "1.3"
 end