fix: #97 JSONField error in ClickHouse 24.8

Author: jayvynl

CHANGELOG.md

@@ -1,6 +1,7 @@
 ### unreleased
 
-- fix: #99 fix update value containing "where" cause exception.
+- fix: #99 update value containing "where" cause exception.
+- fix: #97 JSONField error in ClickHouse 24.8.
 
 ### 1.3.0
 

clickhouse_backend/backend/base.py

@@ -34,7 +34,7 @@ class DatabaseWrapper(BaseDatabaseWrapper):
         "BigAutoField": "Int64",
         "IPAddressField": "IPv4",
         "GenericIPAddressField": "IPv6",
-        "JSONField": "JSON",
+        "JSONField": "Object('json')",
         "BinaryField": "String",
         "CharField": "FixedString(%(max_length)s)",
         "DateField": "Date32",

docs/Fields.md

@@ -639,6 +639,8 @@ MapModel.objects.annotate(
 
 ### JSON
 
+**Note:** Object('json') type [is not production-ready and is now deprecated](https://clickhouse.com/docs/en/sql-reference/data-types/object-data-type).
+
 Field importing path: `clickhouse_backend.models.JSONField`.
 
 Neither Nullable nor LowCardinality is supported.

tests/clickhouse_fields/test_jsonfield.py

@@ -5,7 +5,7 @@
 from .models import JSONModel
 
 
-class MapFieldTests(TestCase):
+class JsonFieldTests(TestCase):
     def test_disallow_nullable(self):
         field = models.JSONField(null=True, name="field")
         self.assertEqual(

tests/settings.py

@@ -29,7 +29,6 @@
                 "alter_sync": 2,
                 "allow_suspicious_low_cardinality_types": 1,
                 "allow_experimental_object_type": 1,
-                "allow_experimental_json_type": 1,
             },
         },
         "TEST": {"cluster": "cluster"},
@@ -47,7 +46,6 @@
                 "alter_sync": 2,
                 "allow_suspicious_low_cardinality_types": 1,
                 "allow_experimental_object_type": 1,
-                "allow_experimental_json_type": 1,
             },
         },
         "TEST": {"cluster": "cluster", "managed": False},
@@ -65,7 +63,6 @@
                 "alter_sync": 2,
                 "allow_suspicious_low_cardinality_types": 1,
                 "allow_experimental_object_type": 1,
-                "allow_experimental_json_type": 1,
             },
         },
         "TEST": {"cluster": "cluster", "managed": False},