Support Django 4.2–5.2 LTS

- cove/input/models.py: Overrides formfield() to pass assume_scheme='https' on Django 5.0+, to avoid RemovedInDjango60Warning.
- cove/management/commands/tests.py: Use datetime.timezone.utc instead of timezone.utc, which was removed in Django 5.0.
- cove/settings.py: Remove USE_L10N (default True since Django 4.0, setting removed in 5.0).
- setup.py: Change Django range to >=4.2,<5.3. Django 4.2 LTS is supported until April 2026.
- ci.yml: Test Django 4.2 and 5.2 on Python 3.10/3.12/3.13. Enable PYTHONWARNINGS=error for all versions.

Author: jpmckinney

.github/workflows/ci.yml

@@ -6,28 +6,14 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10"]
+        python-version: ["3.10", "3.12", "3.13"]
         django-version:
-          - "Django>=2.2,<2.3"
-          - "Django>=3.0,<3.1"
-          - "Django>=3.1,<3.2"
-          - "Django>=3.2,<3.3"
           - "Django>=4.2,<4.3"
+          - "Django>=5.2,<5.3"
         exclude:
-          # Django 3.1+ supports Python 3.9.
-          # https://docs.djangoproject.com/en/3.1/releases/3.1.3/
-          - python-version: "3.9"
-            django-version: "Django>=2.2,<2.3"
-          - python-version: "3.9"
-            django-version: "Django>=3.0,<3.1"
-          # Django 3.2+ supports Python 3.10.
-          # https://docs.djangoproject.com/en/3.2/releases/3.2/
-          - python-version: "3.10"
-            django-version: "Django>=2.2,<2.3"
-          - python-version: "3.10"
-            django-version: "Django>=3.0,<3.1"
-          - python-version: "3.10"
-            django-version: "Django>=3.1,<3.2"
+          # Django 4.2 supports Python 3.8–3.12.
+          - python-version: "3.13"
+            django-version: "Django>=4.2,<4.3"
     steps:
       - uses: actions/checkout@v4
       - name: Setup python
@@ -43,14 +29,6 @@ jobs:
           PYTHONWARNINGS: error
           DJANGO_SETTINGS_MODULE: cove.settings
           SECRET_KEY: 7ur)dt+e%1^e6$8_sd-@1h67_5zixe2&39%r2$$8_7v6fr_7ee
-        if: ${{ matrix.django-version != 'Django>=4.2,<4.3' }}
-      # Don't set PYTHONWARNING for Django 4.2, as that has some known
-      # deprecation warnings for 5.0
-      - run: "py.test -n 2 cove --cov"
-        env:
-          DJANGO_SETTINGS_MODULE: cove.settings
-          SECRET_KEY: 7ur)dt+e%1^e6$8_sd-@1h67_5zixe2&39%r2$$8_7v6fr_7ee
-        if: ${{ matrix.django-version == 'Django>=4.2,<4.3' }}
       - name: Check existing migrations can run and no migrations are missing
         env:
           DJANGO_SETTINGS_MODULE: cove.settings

cove/input/models.py

@@ -9,6 +9,7 @@
 from werkzeug.http import parse_options_header
 import secrets
 import string
+import django
 
 CONTENT_TYPE_MAP = {
     'application/json': 'json',
@@ -26,9 +27,21 @@ def upload_to(instance, filename=''):
     return os.path.join(str(instance.pk), random_string, filename)
 
 
+# This class is only needed while Django<5 is supported.
+class URLField(models.URLField):
+    def formfield(self, **kwargs):
+        if django.VERSION >= (5, 0):
+            kwargs.setdefault('assume_scheme', 'https')
+        return super().formfield(**kwargs)
+
+    def deconstruct(self):
+        name, path, args, kwargs = super().deconstruct()
+        return name, "django.db.models.URLField", args, kwargs
+
+
 class SuppliedData(models.Model):
     id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
-    source_url = models.URLField(null=True, max_length=2000)
+    source_url = URLField(null=True, max_length=2000)
     original_file = models.FileField(upload_to=upload_to, max_length=256)
     current_app = models.CharField(max_length=20)
 

cove/management/commands/tests.py

@@ -13,7 +13,7 @@ def test_expire_files():
     recent.original_file.save('test.json', ContentFile('{}'))
 
     old = SuppliedData.objects.create()
-    old.created = timezone.datetime(2015, 1, 1, tzinfo=timezone.utc)
+    old.created = timezone.datetime(2015, 1, 1, tzinfo=datetime.timezone.utc)
     old.original_file.save('test.json', ContentFile('{}'))
 
     call_command('expire_files')

cove/settings.py

@@ -126,8 +126,6 @@
 
 USE_I18N = True
 
-USE_L10N = True
-
 USE_TZ = True
 
 

setup.py

@@ -28,7 +28,7 @@
     classifiers=["License :: OSI Approved :: BSD License"],
     python_requires=">=3.8",
     install_requires=[
-        "Django>=2.2,<4.3",
+        "Django>=4.2,<5.3",
         "django-bootstrap3",
         "requests",
         "flattentool",