eat: add Django 2 compatibility

.github/workflows/tests.yml

@@ -11,6 +11,10 @@ jobs:
         django: ["3.2", "4.1", "4.2"]
         python-version: ["3.8", "3.9", "3.10"]
         include:
+          - django: "2.2"
+            python-version: "3.10"
+          - django: "2.2"
+            python-version: "3.11"
           - django: "3.2"
             python-version: "3.7"
           - django: "4.1"

graphene_django/compat.py

@@ -1,9 +1,3 @@
-# For backwards compatibility, we import JSONField to have it available for import via
-# this compat module (https://github.com/graphql-python/graphene-django/issues/1428).
-# Django's JSONField is available in Django 3.2+ (the minimum version we support)
-from django.db.models import JSONField
-
-
 class MissingType:
     def __init__(self, *args, **kwargs):
         pass
@@ -18,5 +12,12 @@ try:
         HStoreField,
         RangeField,
     )
+
+    try:
+        from django.db.models import JSONField
+    except ImportError:
+        from django.contrib.postgres.fields import JSONField
 except ImportError:
-    IntegerRangeField, ArrayField, HStoreField, RangeField = (MissingType,) * 4
+    IntegerRangeField, ArrayField, HStoreField, RangeField, JSONField = (
+        MissingType,
+    ) * 5

graphene_django/converter.py

@@ -37,7 +37,7 @@ except ImportError:
     from graphql import assert_valid_name as assert_name
 from graphql.pyutils import register_description
 
-from .compat import ArrayField, HStoreField, RangeField
+from .compat import ArrayField, HStoreField, RangeField, JSONField
 from .fields import DjangoListField, DjangoConnectionField
 from .settings import graphene_settings
 from .utils.str_converters import to_const
@@ -471,7 +471,7 @@ def convert_postgres_array_to_list(field, registry=None):
 
 
 @convert_django_field.register(HStoreField)
-@convert_django_field.register(models.JSONField)
+@convert_django_field.register(JSONField)
 def convert_json_field_to_string(field, registry=None):
     return JSONString(
         description=get_django_field_description(field), required=not field.null

graphene_django/tests/test_query.py

@@ -11,7 +11,7 @@ from pytest import raises
 import graphene
 from graphene.relay import Node
 
-from ..compat import IntegerRangeField, MissingType
+from ..compat import IntegerRangeField, MissingType, JSONField
 from ..fields import DjangoConnectionField
 from ..types import DjangoObjectType
 from ..utils import DJANGO_FILTER_INSTALLED
@@ -133,7 +133,7 @@ def test_should_query_postgres_fields():
 
     class Event(models.Model):
         ages = IntegerRangeField(help_text="The age ranges")
-        data = models.JSONField(help_text="Data")
+        data = JSONField(help_text="Data")
         store = HStoreField()
         tags = ArrayField(models.CharField(max_length=50))
 

setup.py

@@ -20,7 +20,7 @@ tests_require = [
     "coveralls",
     "mock",
     "pytz",
-    "django-filter>=22.1",
+    "django-filter>=21.1",
     "pytest-django>=4.5.2",
 ] + rest_framework_require
 
@@ -65,7 +65,7 @@ setup(
         "graphene @ git+https://github.com/graphql-python/graphene.git@ee1ff975d71f6590eb6933d76d12054c9839774a#egg=graphene",
         "graphql-core>=3.1.0,<4",
         "graphql-relay @ git+https://github.com/loft-orbital/graphql-relay-py.git@loft-v3.2.0-1#egg=graphql-relay",
-        "Django>=3.2",
+        "Django>=2.2.13",
         "promise>=2.1",
         "text-unidecode",
     ],

tox.ini

@@ -1,5 +1,6 @@
 [tox]
 envlist =
+    py{37,38,39,310}-django22,
     py{37,38,39,310}-django32,
     py{38,39,310}-django{41,42,main},
     py311-django{41,42,main}
@@ -15,6 +16,7 @@ python =
 
 [gh-actions:env]
 DJANGO =
+    2.2: django22
     3.2: django32
     4.1: django41
     4.2: django42
@@ -29,6 +31,7 @@ setenv =
 deps =
     -e.[test]
     psycopg2-binary
+    django22: Django==2.2.13
     django32: Django>=3.2,<4.0
     django41: Django>=4.1,<4.2
     django42: Django>=4.2,<4.3