diff --git a/lib/jsonapi/active_relation/join_manager.rb b/lib/jsonapi/active_relation/join_manager.rb
index 3d1ec34b..ffa1cf0f 100644
--- a/lib/jsonapi/active_relation/join_manager.rb
+++ b/lib/jsonapi/active_relation/join_manager.rb
@@ -147,9 +147,15 @@ def perform_joins(records, options)
             related_resource_klass = join_details[:related_resource_klass]
             join_type = relationship_details[:join_type]
 
+            join_options = {
+              relationship: relationship,
+              relationship_details: relationship_details,
+              related_resource_klass: related_resource_klass,
+            }
+
             if relationship == :root
               unless source_relationship
-                add_join_details('', {alias: resource_klass._table_name, join_type: :root})
+                add_join_details('', {alias: resource_klass._table_name, join_type: :root, join_options: join_options})
               end
               next
             end
@@ -163,7 +169,7 @@ def perform_joins(records, options)
                 options: options)
             }
 
-            details = {alias: self.class.alias_from_arel_node(join_node), join_type: join_type}
+            details = {alias: self.class.alias_from_arel_node(join_node), join_type: join_type, join_options: join_options}
 
             if relationship == source_relationship
               if relationship.polymorphic? && relationship.belongs_to?
diff --git a/lib/jsonapi/active_relation_resource.rb b/lib/jsonapi/active_relation_resource.rb
index c8631172..0ceedd65 100644
--- a/lib/jsonapi/active_relation_resource.rb
+++ b/lib/jsonapi/active_relation_resource.rb
@@ -338,6 +338,11 @@ def apply_join(records:, relationship:, resource_type:, join_type:, options:)
             records = records.joins_left(relation_name)
           end
         end
+
+        if relationship.merge_resource_records
+          records = records.merge(self.records(options))
+        end
+
         records
       end
 
diff --git a/lib/jsonapi/relationship.rb b/lib/jsonapi/relationship.rb
index 6ed3c54b..03275357 100644
--- a/lib/jsonapi/relationship.rb
+++ b/lib/jsonapi/relationship.rb
@@ -3,7 +3,7 @@ class Relationship
     attr_reader :acts_as_set, :foreign_key, :options, :name,
                 :class_name, :polymorphic, :always_include_optional_linkage_data,
                 :parent_resource, :eager_load_on_include, :custom_methods,
-                :inverse_relationship, :allow_include
+                :inverse_relationship, :allow_include, :merge_resource_records
 
     attr_writer :allow_include
 
@@ -22,7 +22,7 @@ def initialize(name, options = {})
         ActiveSupport::Deprecation.warn('Use polymorphic_types instead of polymorphic_relations')
         @polymorphic_types ||= options[:polymorphic_relations]
       end
-
+      @merge_resource_records = options.fetch(:merge_resource_records, options[:relation_name].nil?) == true
       @always_include_optional_linkage_data = options.fetch(:always_include_optional_linkage_data, false) == true
       @eager_load_on_include = options.fetch(:eager_load_on_include, true) == true
       @allow_include = options[:allow_include]
diff --git a/test/fixtures/active_record.rb b/test/fixtures/active_record.rb
index 1209302f..f2b2d15d 100644
--- a/test/fixtures/active_record.rb
+++ b/test/fixtures/active_record.rb
@@ -1393,7 +1393,7 @@ class PostResource < JSONAPI::Resource
 
   has_one :author, class_name: 'Person'
   has_one :section
-  has_many :tags, acts_as_set: true, inverse_relationship: :posts, eager_load_on_include: false
+  has_many :tags, acts_as_set: true, inverse_relationship: :posts
   has_many :comments, acts_as_set: false, inverse_relationship: :post
 
   # Not needed - just for testing
@@ -1917,16 +1917,7 @@ class AuthorResource < JSONAPI::Resource
       model_name 'Person'
       attributes :name
 
-      has_many :books, inverse_relationship: :authors, relation_name: -> (options) {
-        book_admin = options[:context][:book_admin] || options[:context][:current_user].try(:book_admin)
-
-        if book_admin
-          :books
-        else
-          :not_banned_books
-        end
-      }
-
+      has_many :books
       has_many :book_comments
     end
 
@@ -1966,6 +1957,9 @@ class BookResource < JSONAPI::Resource
               }
 
       filter :banned, apply: :apply_filter_banned
+      filter :title, apply: ->(records, value, options) {
+        records.where('books.title LIKE ?', "#{value[0]}%")
+      }
 
       class << self
         def books
@@ -1977,10 +1971,9 @@ def not_banned_books
         end
 
         def records(options = {})
-          context = options[:context]
-          current_user = context ? context[:current_user] : nil
+          current_user = options.dig(:context, :current_user)
 
-          records = _model_class.all
+          records = super
           # Hide the banned books from people who are not book admins
           unless current_user && current_user.book_admin
             records = records.where(not_banned_books)
@@ -1989,8 +1982,7 @@ def records(options = {})
         end
 
         def apply_filter_banned(records, value, options)
-          context = options[:context]
-          current_user = context ? context[:current_user] : nil
+          current_user = options.dig(:context, :current_user)
 
           # Only book admins might filter for banned books
           if current_user && current_user.book_admin
@@ -2030,7 +2022,7 @@ def approved_comments(approved = true)
         end
 
         def records(options = {})
-          current_user = options[:context][:current_user]
+          current_user = options.dig(:context, :current_user)
           _model_class.for_user(current_user)
         end
       end
@@ -2085,7 +2077,7 @@ class PostResource < JSONAPI::Resource
 
       has_one :author, class_name: 'Person', exclude_links: [:self, "related"]
       has_one :section, exclude_links: [:self, :related]
-      has_many :tags, acts_as_set: true, inverse_relationship: :posts, eager_load_on_include: false, exclude_links: :default
+      has_many :tags, acts_as_set: true, inverse_relationship: :posts, exclude_links: :default
       has_many :comments, acts_as_set: false, inverse_relationship: :post, exclude_links: ["self", :related]
     end
 
diff --git a/test/integration/book_authorization_test.rb b/test/integration/book_authorization_test.rb
new file mode 100644
index 00000000..6327f2ba
--- /dev/null
+++ b/test/integration/book_authorization_test.rb
@@ -0,0 +1,38 @@
+require File.expand_path('../../test_helper', __FILE__)
+
+class BookAuthorizationTest < ActionDispatch::IntegrationTest
+  def setup
+    DatabaseCleaner.start
+    JSONAPI.configuration.json_key_format = :underscored_key
+    JSONAPI.configuration.route_format = :underscored_route
+    Api::V2::BookResource.paginator :offset
+  end
+
+  def test_restricted_records_primary
+    Api::V2::BookResource.paginator :none
+
+    # Not a book admin
+    $test_user = Person.find(1001)
+    assert_cacheable_jsonapi_get '/api/v2/books?filter[title]=Book%206'
+    assert_equal 12, json_response['data'].size
+
+    # book_admin
+    $test_user = Person.find(1005)
+    assert_cacheable_jsonapi_get '/api/v2/books?filter[title]=Book%206'
+    assert_equal 111, json_response['data'].size
+  end
+
+  def test_restricted_records_related
+    Api::V2::BookResource.paginator :none
+
+    # Not a book admin
+    $test_user = Person.find(1001)
+    assert_cacheable_jsonapi_get '/api/v2/authors/1002/books'
+    assert_equal 1, json_response['data'].size
+
+    # book_admin
+    $test_user = Person.find(1005)
+    assert_cacheable_jsonapi_get '/api/v2/authors/1002/books'
+    assert_equal 2, json_response['data'].size
+  end
+end
diff --git a/test/unit/active_relation_resource_finder/join_manager_test.rb b/test/unit/active_relation_resource_finder/join_manager_test.rb
index 840c90ee..2b38d064 100644
--- a/test/unit/active_relation_resource_finder/join_manager_test.rb
+++ b/test/unit/active_relation_resource_finder/join_manager_test.rb
@@ -23,7 +23,7 @@ def test_no_added_joins
     records = join_manager.join(records, {})
     assert_equal 'SELECT "posts".* FROM "posts"', records.to_sql
 
-    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details)
+    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details.except!(:join_options))
   end
 
   def test_add_single_join
@@ -32,8 +32,22 @@ def test_add_single_join
     records = PostResource.records({})
     records = join_manager.join(records, {})
     assert_equal 'SELECT "posts".* FROM "posts" LEFT OUTER JOIN "posts_tags" ON "posts_tags"."post_id" = "posts"."id" LEFT OUTER JOIN "tags" ON "tags"."id" = "posts_tags"."tag_id"', records.to_sql
-    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details)
-    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(PostResource._relationship(:tags)))
+    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details.except!(:join_options))
+    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(PostResource._relationship(:tags)).except!(:join_options))
+  end
+
+  def test_joins_have_join_options
+    filters = {'tags' => ['1']}
+    join_manager = JSONAPI::ActiveRelation::JoinManager.new(resource_klass: PostResource, filters: filters)
+    records = PostResource.records({})
+    records = join_manager.join(records, {})
+    assert_equal 'SELECT "posts".* FROM "posts" LEFT OUTER JOIN "posts_tags" ON "posts_tags"."post_id" = "posts"."id" LEFT OUTER JOIN "tags" ON "tags"."id" = "posts_tags"."tag_id"', records.to_sql
+
+    source_join_options = join_manager.source_join_details[:join_options]
+    assert_array_equals [:relationship, :relationship_details, :related_resource_klass], source_join_options.keys
+
+    relationship_join_options = join_manager.join_details_by_relationship(PostResource._relationship(:tags))[:join_options]
+    assert_array_equals [:relationship, :relationship_details, :related_resource_klass], relationship_join_options.keys
   end
 
   def test_add_single_sort_join
@@ -43,8 +57,8 @@ def test_add_single_sort_join
     records = join_manager.join(records, {})
 
     assert_equal 'SELECT "posts".* FROM "posts" LEFT OUTER JOIN "posts_tags" ON "posts_tags"."post_id" = "posts"."id" LEFT OUTER JOIN "tags" ON "tags"."id" = "posts_tags"."tag_id"', records.to_sql
-    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details)
-    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(PostResource._relationship(:tags)))
+    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details.except!(:join_options))
+    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(PostResource._relationship(:tags)).except!(:join_options))
   end
 
   def test_add_single_sort_and_filter_join
@@ -54,8 +68,8 @@ def test_add_single_sort_and_filter_join
     records = PostResource.records({})
     records = join_manager.join(records, {})
     assert_equal 'SELECT "posts".* FROM "posts" LEFT OUTER JOIN "posts_tags" ON "posts_tags"."post_id" = "posts"."id" LEFT OUTER JOIN "tags" ON "tags"."id" = "posts_tags"."tag_id"', records.to_sql
-    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details)
-    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(PostResource._relationship(:tags)))
+    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details.except!(:join_options))
+    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(PostResource._relationship(:tags)).except!(:join_options))
   end
 
   def test_add_sibling_joins
@@ -69,9 +83,9 @@ def test_add_sibling_joins
     records = join_manager.join(records, {})
 
     assert_equal 'SELECT "posts".* FROM "posts" LEFT OUTER JOIN "posts_tags" ON "posts_tags"."post_id" = "posts"."id" LEFT OUTER JOIN "tags" ON "tags"."id" = "posts_tags"."tag_id" LEFT OUTER JOIN "people" ON "people"."id" = "posts"."author_id"', records.to_sql
-    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details)
-    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(PostResource._relationship(:tags)))
-    assert_hash_equals({alias: 'people', join_type: :left}, join_manager.join_details_by_relationship(PostResource._relationship(:author)))
+    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details.except!(:join_options))
+    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(PostResource._relationship(:tags)).except!(:join_options))
+    assert_hash_equals({alias: 'people', join_type: :left}, join_manager.join_details_by_relationship(PostResource._relationship(:author)).except!(:join_options))
   end
 
 
@@ -82,7 +96,7 @@ def test_add_joins_source_relationship
     records = join_manager.join(records, {})
 
     assert_equal 'SELECT "posts".* FROM "posts" INNER JOIN "comments" ON "comments"."post_id" = "posts"."id"', records.to_sql
-    assert_hash_equals({alias: 'comments', join_type: :inner}, join_manager.source_join_details)
+    assert_hash_equals({alias: 'comments', join_type: :inner}, join_manager.source_join_details.except!(:join_options))
   end
 
 
@@ -96,7 +110,7 @@ def test_add_joins_source_relationship_with_custom_apply
 
     assert_equal sql, records.to_sql
 
-    assert_hash_equals({alias: 'comments', join_type: :inner}, join_manager.source_join_details)
+    assert_hash_equals({alias: 'comments', join_type: :inner}, join_manager.source_join_details.except!(:join_options))
   end
 
   def test_add_nested_scoped_joins
@@ -110,11 +124,11 @@ def test_add_nested_scoped_joins
     records = Api::V10::PostResource.records({})
     records = join_manager.join(records, {})
 
-    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details)
-    assert_hash_equals({alias: 'comments', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:comments)))
-    assert_hash_equals({alias: 'authors_comments', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:author)))
-    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:tags)))
-    assert_hash_equals({alias: 'people', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:author)))
+    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details.except!(:join_options))
+    assert_hash_equals({alias: 'comments', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:comments)).except!(:join_options))
+    assert_hash_equals({alias: 'authors_comments', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:author)).except!(:join_options))
+    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:tags)).except!(:join_options))
+    assert_hash_equals({alias: 'people', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:author)).except!(:join_options))
 
     # Now test with different order for the filters
     filters = {
@@ -127,11 +141,11 @@ def test_add_nested_scoped_joins
     records = Api::V10::PostResource.records({})
     records = join_manager.join(records, {})
 
-    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details)
-    assert_hash_equals({alias: 'comments', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:comments)))
-    assert_hash_equals({alias: 'authors_comments', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:author)))
-    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:tags)))
-    assert_hash_equals({alias: 'people', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:author)))
+    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details.except!(:join_options))
+    assert_hash_equals({alias: 'comments', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:comments)).except!(:join_options))
+    assert_hash_equals({alias: 'authors_comments', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:author)).except!(:join_options))
+    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:tags)).except!(:join_options))
+    assert_hash_equals({alias: 'people', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:author)).except!(:join_options))
   end
 
   def test_add_nested_joins_with_fields
@@ -145,11 +159,11 @@ def test_add_nested_joins_with_fields
     records = Api::V10::PostResource.records({})
     records = join_manager.join(records, {})
 
-    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details)
-    assert_hash_equals({alias: 'comments', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:comments)))
-    assert_hash_equals({alias: 'authors_comments', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:author)))
-    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:tags)))
-    assert_hash_equals({alias: 'people', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:author)))
+    assert_hash_equals({alias: 'posts', join_type: :root}, join_manager.source_join_details.except!(:join_options))
+    assert_hash_equals({alias: 'comments', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:comments)).except!(:join_options))
+    assert_hash_equals({alias: 'authors_comments', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:author)).except!(:join_options))
+    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:tags)).except!(:join_options))
+    assert_hash_equals({alias: 'people', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:author)).except!(:join_options))
   end
 
   def test_add_joins_with_sub_relationship
@@ -160,10 +174,10 @@ def test_add_joins_with_sub_relationship
     records = Api::V10::PostResource.records({})
     records = join_manager.join(records, {})
 
-    assert_hash_equals({alias: 'comments', join_type: :inner}, join_manager.source_join_details)
-    assert_hash_equals({alias: 'comments', join_type: :inner}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:comments)))
-    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:tags)))
-    assert_hash_equals({alias: 'comments_people', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PersonResource._relationship(:comments)))
+    assert_hash_equals({alias: 'comments', join_type: :inner}, join_manager.source_join_details.except!(:join_options))
+    assert_hash_equals({alias: 'comments', join_type: :inner}, join_manager.join_details_by_relationship(Api::V10::PostResource._relationship(:comments)).except!(:join_options))
+    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::CommentResource._relationship(:tags)).except!(:join_options))
+    assert_hash_equals({alias: 'comments_people', join_type: :left}, join_manager.join_details_by_relationship(Api::V10::PersonResource._relationship(:comments)).except!(:join_options))
   end
 
   def test_add_joins_with_sub_relationship_and_filters
@@ -181,11 +195,11 @@ def test_add_joins_with_sub_relationship_and_filters
     records = PostResource.records({})
     records = join_manager.join(records, {})
 
-    assert_hash_equals({alias: 'comments', join_type: :inner}, join_manager.source_join_details)
-    assert_hash_equals({alias: 'comments', join_type: :inner}, join_manager.join_details_by_relationship(PostResource._relationship(:comments)))
-    assert_hash_equals({alias: 'people', join_type: :left}, join_manager.join_details_by_relationship(CommentResource._relationship(:author)))
-    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(CommentResource._relationship(:tags)))
-    assert_hash_equals({alias: 'comments_people', join_type: :left}, join_manager.join_details_by_relationship(PersonResource._relationship(:comments)))
+    assert_hash_equals({alias: 'comments', join_type: :inner}, join_manager.source_join_details.except!(:join_options))
+    assert_hash_equals({alias: 'comments', join_type: :inner}, join_manager.join_details_by_relationship(PostResource._relationship(:comments)).except!(:join_options))
+    assert_hash_equals({alias: 'people', join_type: :left}, join_manager.join_details_by_relationship(CommentResource._relationship(:author)).except!(:join_options))
+    assert_hash_equals({alias: 'tags', join_type: :left}, join_manager.join_details_by_relationship(CommentResource._relationship(:tags)).except!(:join_options))
+    assert_hash_equals({alias: 'comments_people', join_type: :left}, join_manager.join_details_by_relationship(PersonResource._relationship(:comments)).except!(:join_options))
   end
 
   def test_polymorphic_join_belongs_to_just_source
@@ -196,10 +210,10 @@ def test_polymorphic_join_belongs_to_just_source
     records = join_manager.join(records, {})
 
     # assert_equal 'SELECT "pictures".* FROM "pictures" LEFT OUTER JOIN "products" ON "products"."id" = "pictures"."imageable_id" AND "pictures"."imageable_type" = \'Product\' LEFT OUTER JOIN "documents" ON "documents"."id" = "pictures"."imageable_id" AND "pictures"."imageable_type" = \'Document\'', records.to_sql
-    assert_hash_equals({alias: 'products', join_type: :left}, join_manager.source_join_details('products'))
-    assert_hash_equals({alias: 'documents', join_type: :left}, join_manager.source_join_details('documents'))
-    assert_hash_equals({alias: 'products', join_type: :left}, join_manager.join_details_by_polymorphic_relationship(PictureResource._relationship(:imageable), 'products'))
-    assert_hash_equals({alias: 'documents', join_type: :left}, join_manager.join_details_by_polymorphic_relationship(PictureResource._relationship(:imageable), 'documents'))
+    assert_hash_equals({alias: 'products', join_type: :left}, join_manager.source_join_details('products').except!(:join_options))
+    assert_hash_equals({alias: 'documents', join_type: :left}, join_manager.source_join_details('documents').except!(:join_options))
+    assert_hash_equals({alias: 'products', join_type: :left}, join_manager.join_details_by_polymorphic_relationship(PictureResource._relationship(:imageable), 'products').except!(:join_options))
+    assert_hash_equals({alias: 'documents', join_type: :left}, join_manager.join_details_by_polymorphic_relationship(PictureResource._relationship(:imageable), 'documents').except!(:join_options))
   end
 
   def test_polymorphic_join_belongs_to_filter
@@ -210,9 +224,9 @@ def test_polymorphic_join_belongs_to_filter
     records = join_manager.join(records, {})
 
     # assert_equal 'SELECT "pictures".* FROM "pictures" LEFT OUTER JOIN "products" ON "products"."id" = "pictures"."imageable_id" AND "pictures"."imageable_type" = \'Product\' LEFT OUTER JOIN "documents" ON "documents"."id" = "pictures"."imageable_id" AND "pictures"."imageable_type" = \'Document\'', records.to_sql
-    assert_hash_equals({alias: 'pictures', join_type: :root}, join_manager.source_join_details)
-    assert_hash_equals({alias: 'products', join_type: :left}, join_manager.join_details_by_polymorphic_relationship(PictureResource._relationship(:imageable), 'products'))
-    assert_hash_equals({alias: 'documents', join_type: :left}, join_manager.join_details_by_polymorphic_relationship(PictureResource._relationship(:imageable), 'documents'))
+    assert_hash_equals({alias: 'pictures', join_type: :root}, join_manager.source_join_details.except!(:join_options))
+    assert_hash_equals({alias: 'products', join_type: :left}, join_manager.join_details_by_polymorphic_relationship(PictureResource._relationship(:imageable), 'products').except!(:join_options))
+    assert_hash_equals({alias: 'documents', join_type: :left}, join_manager.join_details_by_polymorphic_relationship(PictureResource._relationship(:imageable), 'documents').except!(:join_options))
   end
 
   def test_polymorphic_join_belongs_to_filter_on_resource
@@ -228,9 +242,9 @@ def test_polymorphic_join_belongs_to_filter_on_resource
     records = PictureResource.records({})
     records = join_manager.join(records, {})
 
-    assert_hash_equals({alias: 'pictures', join_type: :root}, join_manager.source_join_details)
-    assert_hash_equals({alias: 'products', join_type: :left}, join_manager.join_details_by_polymorphic_relationship(PictureResource._relationship(:imageable), 'products'))
-    assert_hash_equals({alias: 'documents', join_type: :left}, join_manager.join_details_by_polymorphic_relationship(PictureResource._relationship(:imageable), 'documents'))
-    assert_hash_equals({alias: 'file_properties', join_type: :left}, join_manager.join_details_by_relationship(PictureResource._relationship(:file_properties)))
+    assert_hash_equals({alias: 'pictures', join_type: :root}, join_manager.source_join_details.except!(:join_options))
+    assert_hash_equals({alias: 'products', join_type: :left}, join_manager.join_details_by_polymorphic_relationship(PictureResource._relationship(:imageable), 'products').except!(:join_options))
+    assert_hash_equals({alias: 'documents', join_type: :left}, join_manager.join_details_by_polymorphic_relationship(PictureResource._relationship(:imageable), 'documents').except!(:join_options))
+    assert_hash_equals({alias: 'file_properties', join_type: :left}, join_manager.join_details_by_relationship(PictureResource._relationship(:file_properties)).except!(:join_options))
   end
 end
diff --git a/test/unit/resource/relationship_test.rb b/test/unit/resource/relationship_test.rb
index a98d2660..ae28b4b3 100644
--- a/test/unit/resource/relationship_test.rb
+++ b/test/unit/resource/relationship_test.rb
@@ -18,6 +18,30 @@ def self.is_admin(context)
   end
 end
 
+class TestRelationshipOptionsPostsResource < JSONAPI::Resource
+  model_name 'Post'
+  has_one :author, allow_include: :is_admin, merge_resource_records: false
+end
+
+class RelationshipTest < ActiveSupport::TestCase
+  def test_merge_resource_records_enabled_by_default
+    relationship = JSONAPI::Relationship::ToOne.new(:author)
+    assert relationship.merge_resource_records
+  end
+
+  def test_merge_resource_records_is_disabled_by_deafult_with_relation_name
+    relationship = JSONAPI::Relationship::ToOne.new(:author,
+                                                    relation_name: "foo" )
+    refute relationship.merge_resource_records
+  end
+
+  def test_merge_resource_records_can_be_disabled
+    relationship = JSONAPI::Relationship::ToOne.new(:author,
+                                                    merge_resource_records: false )
+    refute relationship.merge_resource_records
+  end
+end
+
 class HasOneRelationshipTest < ActiveSupport::TestCase
 
   def test_polymorphic_type