Changed serializer init to concrete model fields

src/django_clickhouse/clickhouse_models.py

@@ -65,9 +65,9 @@ class ClickHouseModel(with_metaclass(ClickHouseModelMeta, InfiModel)):
             return db_router.db_for_read(self.__class__, instance=self)
 
     @classmethod
-    def get_django_model_serializer(cls):
+    def get_django_model_serializer(cls, writable=False):  # type: (bool) -> Django2ClickHouseModelSerializer
         serializer_cls = lazy_class_import(cls.django_model_serializer)
-        return serializer_cls()
+        return serializer_cls(cls, writable=writable)
 
     @classmethod
     def get_sync_batch_size(cls):

src/django_clickhouse/engines.py

@@ -26,8 +26,8 @@ class InsertOnlyEngineMixin:
         :param objects: A list of django Model instances to sync
         :return: A list of model_cls objects
         """
-        serializer = model_cls.get_django_model_serializer()
+        serializer = model_cls.get_django_model_serializer(writable=True)
-        return [serializer.serialize(obj, model_cls) for obj in objects]
+        return [serializer.serialize(obj) for obj in objects]
 
 
 class MergeTree(InsertOnlyEngineMixin, infi_engines.MergeTree):

src/django_clickhouse/query.py

@@ -7,110 +7,3 @@ class QuerySet(InfiQuerySet):
 
 class AggregateQuerySet(InfiAggregateQuerySet):
     pass
-
-
-# class ClickHouseModel(InfiModel):
-#
-#     @classmethod
-#     def form_query(cls, select_items: Union[str, Set[str], List[str], Tuple[str]], table: Optional[str] = None,
-#                    final: bool = False, date_filter_field: str = '', date_in_prewhere: bool = True,
-#                    prewhere: Union[str, Set[str], List[str], Tuple[str]] = '',
-#                    where: Union[str, Set[str], List[str], Tuple[str]] = '',
-#                    group_fields: Union[str, Set[str], List[str], Tuple[str]] = '', group_with_totals: bool = False,
-#                    order_by: Union[str, Set[str], List[str], Tuple[str]] = '',
-#                    limit: Optional[int] = None, prewhere_app: bool = True):
-#         """
-#         Формирует запрос к данной таблице
-#         :param select_items: строка или массив строк, которые надо выбрать в запросе
-#         :param table: Таблица данного класса по-умолчанию
-#         :param final: Позволяет выбрать из CollapsingMergeTree только последнюю версию записи.
-#         :param date_filter_field: Поле, которое надо отфильтровать от start_date до date_end, если задано
-#         :param date_in_prewhere: Если флаг указан и задано поле date_filter_field,
-#             то условие будет помещено в секцию PREWHERE, иначе - в WHERE
-#         :param prewhere: Условие, которое добавляется в prewhere
-#         :param where: Условие, которое добавляется в where
-#         :param group_fields: Поля, по которым будет производится группировка
-#         :param group_with_totals: Позволяет добавить к группировке модификатор with_totals
-#         :param order_by: Поле или массив полей, по которым сортируется результат
-#         :param limit: Лимит на количество записей
-#         :param prewhere_app: Автоматически добавляет в prewhere фильтр по app_id
-#         :return: Запрос, в пределах приложения
-#         """
-#         assert isinstance(select_items, (str, list, tuple, set)), "select_items must be string, list, tuple or set"
-#         assert table is None or isinstance(table, str), "table must be string or None"
-#         assert isinstance(final, bool), "final must be boolean"
-#         assert isinstance(date_filter_field, str), "date_filter_field must be string"
-#         assert isinstance(date_in_prewhere, bool), "date_in_prewhere must be boolean"
-#         assert isinstance(prewhere, (str, list, tuple, set)), "prewhere must be string, list, tuple or set"
-#         assert isinstance(where, (str, list, tuple, set)), "where must be string, list, tuple or set"
-#         assert isinstance(group_fields, (str, list, tuple, set)), "group_fields must be string, list, tuple or set"
-#         assert isinstance(group_with_totals, bool), "group_with_totals must be boolean"
-#         assert isinstance(order_by, (str, list, tuple, set)), "group_fields must be string, list, tuple or set"
-#         assert limit is None or isinstance(limit, int) and limit > 0, "limit must be None or positive integer"
-#         assert isinstance(prewhere_app, bool), "prewhere_app must be boolean"
-#
-#         table = table or '$db.`{0}`'.format(cls.table_name())
-#         final = 'FINAL' if final else ''
-#
-#         if prewhere:
-#             if not isinstance(prewhere, str):
-#                 prewhere = '(%s)' % ') AND ('.join(prewhere)
-#
-#         if prewhere_app:
-#             prewhere = '`app_id`={app_id} AND (' + prewhere + ')' if prewhere else '`app_id`={app_id}'
-#
-#         if prewhere:
-#             prewhere = 'PREWHERE ' + prewhere
-#
-#         if where:
-#             if not isinstance(where, str):
-#                 where = ' AND '.join(where)
-#             where = 'WHERE ' + where
-#
-#         if not isinstance(select_items, str):
-#             # Исключим пустые строки
-#             select_items = [item for item in select_items if item]
-#             select_items = ', '.join(select_items)
-#
-#         if group_fields:
-#             if not isinstance(group_fields, str):
-#                 group_fields = ', '.join(group_fields)
-#
-#             group_fields = 'GROUP BY %s' % group_fields
-#
-#             if group_with_totals:
-#                 group_fields += ' WITH TOTALS'
-#
-#         if order_by:
-#             if not isinstance(order_by, str):
-#                 order_by = ', '.join(order_by)
-#
-#             order_by = 'ORDER BY ' + order_by
-#
-#         if date_filter_field:
-#             cond = "`%s` >= '{start_date}' AND `%s` < '{end_date}'" % (date_filter_field, date_filter_field)
-#             if date_in_prewhere:
-#                 prewhere += ' AND ' + cond
-#             elif where:
-#                 where += ' AND ' + cond
-#             else:
-#                 where = 'WHERE ' + cond
-#
-#         limit = "LIMIT {0}".format(limit) if limit else ''
-#
-#         query = '''
-#           SELECT %s
-#           FROM %s %s
-#
-#             %s
-#           %s
-#          %s %s %s
-#         ''' % (select_items, table, final, prewhere, where, group_fields, order_by, limit)
-#
-#         # Моя спец функция, сокращающая запись проверки даты на Null в запросах.
-#         # В скобках не может быть других скобок
-#         # (иначе надо делать сложную проверку скобочной последовательности, решил пока не заморачиваться)
-#         # Фактически, функция приводит выражение в скобках к timestamp и смотрит, что оно больше 0
-#         query = re.sub(r'\$dateIsNotNull\s*(\([^()]*\))', r'toUInt64(toDateTime(\1)) > 0', query)
-#
-#         return re.sub(r'\s+', ' ', query.strip())

src/django_clickhouse/serializers.py

@@ -1,21 +1,25 @@
-from typing import Type
-
 from django.db.models import Model as DjangoModel
 from django.forms import model_to_dict
 
 
 class Django2ClickHouseModelSerializer:
-    def __init__(self, fields=None, exclude_fields=None):
+    def __init__(self, model_cls, fields=None, exclude_fields=None, writable=False):
-        self.serialize_fields = fields
+        self._model_cls = model_cls
+        if fields is not None:
+            self.serialize_fields = fields
+        else:
+            self.serialize_fields = model_cls.fields(writable=writable).keys()
+
         self.exclude_serialize_fields = exclude_fields
 
-    def serialize(self, obj, model_cls):
+    def serialize(self, obj):  # type: (DjangoModel) -> 'ClickHouseModel'
-        # type: (DjangoModel, Type['ClickHouseModel']) -> 'ClickHouseModel'
         data = model_to_dict(obj, self.serialize_fields, self.exclude_serialize_fields)
 
         # Remove None values, they should be initialized as defaults
         for key, value in data.items():
             if value is None:
                 del data[key]
+            elif isinstance(value, bool):
+                data[key] = int(value)
 
-        return model_cls(**data)
+        return self._model_cls(**data)

tests/test_serializers.py

@@ -14,24 +14,24 @@ class Django2ClickHouseModelSerializerTest(TestCase):
         self.obj = TestModel.objects.get(pk=1)
 
     def test_all(self):
-        serializer = Django2ClickHouseModelSerializer()
+        serializer = Django2ClickHouseModelSerializer(ClickHouseTestModel)
-        res = serializer.serialize(self.obj, ClickHouseTestModel)
+        res = serializer.serialize(self.obj)
         self.assertIsInstance(res, ClickHouseTestModel)
         self.assertEqual(self.obj.id, res.id)
         self.assertEqual(self.obj.value, res.value)
         self.assertEqual(self.obj.created_date, res.created_date)
 
     def test_fields(self):
-        serializer = Django2ClickHouseModelSerializer(fields=('value'))
+        serializer = Django2ClickHouseModelSerializer(ClickHouseTestModel, fields=('value'))
-        res = serializer.serialize(self.obj, ClickHouseTestModel)
+        res = serializer.serialize(self.obj)
         self.assertIsInstance(res, ClickHouseTestModel)
         self.assertEqual(0, res.id)
         self.assertEqual(datetime.date(1970, 1, 1), res.created_date)
         self.assertEqual(self.obj.value, res.value)
 
     def test_exclude_fields(self):
-        serializer = Django2ClickHouseModelSerializer(exclude_fields=('created_date',))
+        serializer = Django2ClickHouseModelSerializer(ClickHouseTestModel, exclude_fields=('created_date',))
-        res = serializer.serialize(self.obj, ClickHouseTestModel)
+        res = serializer.serialize(self.obj)
         self.assertIsInstance(res, ClickHouseTestModel)
         self.assertEqual(datetime.date(1970, 1, 1), res.created_date)
         self.assertEqual(self.obj.id, res.id)