Generalize tournament save interactor

It now is responsible for saving all ApplicationRecord objects to the
database. This will reduce code duplication one we have other objects
that need to be saved. (As we will soon need to save individual matches)

app/controllers/tournaments_controller.rb

@@ -38,14 +38,14 @@ class TournamentsController < ApplicationController
     if group_stage
       groups = organize_teams_in_groups(teams)
       # add groups to tournament
-      result = AddGroupStageToTournamentAndSaveTournamentToDatabase.call(tournament: tournament, groups: groups)
+      result = AddGroupStageToTournamentAndSave.call(tournament: tournament, groups: groups)
     else
       # convert teams parameter into Team objects
       teams = teams.map(&method(:find_or_create_team))
       # associate provided teams with tournament
       tournament.teams = teams
       # add playoff stage to tournament
-      result = AddPlayoffsToTournamentAndSaveTournamentToDatabase.call(tournament: tournament)
+      result = AddPlayoffsToTournamentAndSave.call(tournament: tournament)
     end
     # validate tournament
     unless tournament.valid?

app/interactors/add_group_stage_to_tournament.rb

@@ -10,7 +10,7 @@ class AddGroupStageToTournament
     begin
       group_stage = GroupStageService.generate_group_stage(groups)
       tournament.stages = [group_stage]
-      context.tournament = tournament
+      context.object_to_save = tournament
     rescue StandardError
       context.fail!
     end

app/interactors/add_playoffs_to_tournament.rb

@@ -12,7 +12,7 @@ class AddPlayoffsToTournament
       else
         tournament.stages.concat playoff_stages
       end
-      context.tournament = tournament
+      context.object_to_save = tournament
     else
       context.fail!
     end

app/interactors/save_application_record_object.rb

@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
-class SaveTournamentToDatabase
+class SaveApplicationRecordObject
   include Interactor
 
   def call
-    if context.tournament.save
+    if context.object_to_save.save
       nil
     else
       context.fail!

app/organizers/add_group_stage_to_tournament_and_save.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddGroupStageToTournamentAndSave
+  include Interactor::Organizer
+
+  organize AddGroupStageToTournament, SaveApplicationRecordObject
+end

app/organizers/add_group_stage_to_tournament_and_save_tournament_to_database.rb

@@ -1,7 +0,0 @@
-# frozen_string_literal: true
-
-class AddGroupStageToTournamentAndSaveTournamentToDatabase
-  include Interactor::Organizer
-
-  organize AddGroupStageToTournament, SaveTournamentToDatabase
-end

app/organizers/add_playoffs_to_tournament_and_save.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddPlayoffsToTournamentAndSave
+  include Interactor::Organizer
+
+  organize AddPlayoffsToTournament, SaveApplicationRecordObject
+end

app/organizers/add_playoffs_to_tournament_and_save_tournament_to_database.rb

@@ -1,7 +0,0 @@
-# frozen_string_literal: true
-
-class AddPlayoffsToTournamentAndSaveTournamentToDatabase
-  include Interactor::Organizer
-
-  organize AddPlayoffsToTournament, SaveTournamentToDatabase
-end

spec/interactors/save_tournament_to_database_interactor_spec.rb

@@ -1,13 +1,13 @@
 # frozen_string_literal: true
 
-RSpec.describe SaveTournamentToDatabase do
+RSpec.describe SaveApplicationRecordObject do
   before do
     @tournament = create(:tournament)
   end
 
   context 'save succeeds' do
     let(:context) do
-      SaveTournamentToDatabase.call(tournament: @tournament)
+      SaveApplicationRecordObject.call(object_to_save: @tournament)
     end
     before do
       expect_any_instance_of(Tournament)
@@ -19,13 +19,13 @@ RSpec.describe SaveTournamentToDatabase do
     end
 
     it 'provides the tournament' do
-      expect(context.tournament).to eq(@tournament)
+      expect(context.object_to_save).to eq(@tournament)
     end
   end
 
   context 'save fails' do
     let(:context) do
-      SaveTournamentToDatabase.call(tournament: @tournament)
+      SaveApplicationRecordObject.call(object_to_save: @tournament)
     end
     before do
       expect_any_instance_of(Tournament)