change tounament: viewset, serializer, models

simply the code and use django feat

tournament/models.py

@@ -12,19 +12,6 @@ class TournamentModel(models.Model):
 	started = models.BooleanField(default=False)
 	finished = models.BooleanField(default=False)
 
-	def create(self, nb_players: int, nb_players_by_game: int, name: str = ""):
-		self.level = 1
-		number: int = nb_players
-		while (number != nb_players_by_game):
-			number = number // 2 + (number % 2)
-			self.level += 1
-		self.nb_players = nb_players
-		self.nb_players_by_game = nb_players_by_game
-		self.name = name
-		self.save()
-
-		return self.pk
-
 	def create_game(self, users_id):
 		game_id = GameModel.create(users_id=users_id)
 		TournamentGamesModel(game_id=game_id, tournament_id=self.pk).save()