Add v0.9 compatibility adapter

app/serializers/export/aspect_serializer.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Export
-  class AspectSerializer < ActiveModel::Serializer
+  class AspectSerializer < AMS::V09::Serializer
     attributes :name
   end
 end

app/serializers/export/contact_serializer.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Export
-  class ContactSerializer < ActiveModel::Serializer
+  class ContactSerializer < AMS::V09::Serializer
     attributes :sharing,
                :receiving,
                :following,

app/serializers/export/others_data_serializer.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Export
-  class OthersDataSerializer < ActiveModel::Serializer
+  class OthersDataSerializer < AMS::V09::Serializer
     # Relayables of other people in the archive: comments, likes, participations, poll participations where author is
     # the archive owner
     has_many :relayables, serializer: FlatMapArraySerializer, each_serializer: FederationEntitySerializer

app/serializers/export/user_serializer.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Export
-  class UserSerializer < ActiveModel::Serializer
+  class UserSerializer < AMS::V09::Serializer
     attributes :username,
                :email,
                :language,

app/serializers/federation_entity_serializer.rb

@@ -3,7 +3,7 @@
 # This is an ActiveModel::Serializer based class which uses DiasporaFederation::Entity JSON serialization
 # features in order to serialize local DB objects. To determine a type of entity class to use the same routines
 # are used as for federation messages generation.
-class FederationEntitySerializer < ActiveModel::Serializer
+class FederationEntitySerializer < AMS::V09::Serializer
   include SerializerPostProcessing
 
   private

app/serializers/flat_map_array_serializer.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class FlatMapArraySerializer < ActiveModel::ArraySerializer
+class FlatMapArraySerializer < ActiveModelSerializers::SerializableResource
   def serializable_object(options={})
     @object.flat_map do |subarray|
       subarray.map do |item|

app/serializers/notification_serializer.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class NotificationSerializer < ActiveModel::Serializer
+class NotificationSerializer < AMS::V09::Serializer
   attributes :id,
              :target_type,
              :target_id,

app/serializers/user_info_serializer.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UserInfoSerializer < ActiveModel::Serializer
+class UserInfoSerializer < AMS::V09::Serializer
   attributes :sub, :name, :nickname, :profile, :picture
 
   def sub

spec/serializers/serializer_post_processing_spec.rb

@@ -2,8 +2,8 @@
 
 describe SerializerPostProcessing do
   describe "#modify_serializable_object" do
-    it "allows to modify serializable object of ActiveModel::Serializer ancestor" do
-      class TestSerializer < ActiveModel::Serializer
+    it "allows to modify serializable object of AMS::V09::Serializer ancestor" do
+      class TestSerializer < AMS::V09::Serializer
         include SerializerPostProcessing
 
         def modify_serializable_object(*)
@@ -21,7 +21,7 @@ def modify_serializable_object(*)
 
   describe "#except" do
     it "allows to except a key from attributes" do
-      class TestSerializer2 < ActiveModel::Serializer
+      class TestSerializer2 < AMS::V09::Serializer
         include SerializerPostProcessing
 
         attributes :key_to_exclude

spec/support/serializer_matchers.rb

@@ -72,7 +72,7 @@ def serializer_class
   def pick_serializer_class
     return association_serializer_class unless association_serializer_class.nil?
     return @serializer_from_options unless @serializer_from_options.nil?
-    return ActiveModel::ArraySerializer unless each_serializer_class.nil?
+    return ActiveModelSerializers::SerializableResource unless each_serializer_class.nil?
   end
 end
 
@@ -82,6 +82,6 @@ def pick_serializer_class
 # NOTE: this matcher uses knowledge of AMS internals
 RSpec::Matchers.define :serialize_each_with do |expected|
   match do |actual|
-    actual.is_a?(ActiveModel::ArraySerializer) && actual.instance_variable_get("@each_serializer") == expected
+    actual.is_a?(ActiveModelSerializers::SerializableResource) && actual.instance_variable_get("@each_serializer") == expected
   end
 end