feat: add Django 3 test support (#106)

Django 3.0 is out: https://docs.djangoproject.com/en/3.0/releases/3.0/ Let's see if we're compatible. It turns out no code changes are needed huzzah!

Author: crccheck

.travis.yml

@@ -54,6 +54,15 @@ jobs:
     - stage: test
       python: 3.7
       env: TOX_ENV=django22-py37
+    - stage: test
+      python: 3.6
+      env: TOX_ENV=django30-py36
+    - stage: test
+      python: 3.7
+      env: TOX_ENV=django30-py37
+    - stage: test
+      python: 3.8
+      env: TOX_ENV=django30-py38
     - stage: lint
       install: pip install black
       script: black --check .

Makefile

@@ -53,18 +53,19 @@ resetdb: ## Delete and then recreate the dev sqlite database
 	python $(MANAGE) loaddata sample_data
 
 docker/build: ## Build a full set of Docker images
-docker/build: docker/build/2.2.6 docker/build/2.1.13 docker/build/2.0.13 docker/build/1.11.25 docker/build/1.10.8 docker/build/1.9.13 docker/build/1.8.18
+docker/build: docker/build/3.0 docker/build/2.2.6 docker/build/2.1.13 docker/build/2.0.13 docker/build/1.11.25 docker/build/1.10.8 docker/build/1.9.13 docker/build/1.8.18
 
 docker/build/%:
 	docker build --build-arg DJANGO_VERSION=$* \
 	  -t $(IMAGE):$$(echo "$*" | cut -f 1-2 -d.) .
 
-run: run/2.2
+run: run/3.0
 
 run/%:
 	docker run --rm -p 8000:8000 -it $(IMAGE):$*
 
 docker/publish: ## Publish Docker images to the hub
+	docker push $(IMAGE):3.0
 	docker push $(IMAGE):2.2
 	docker push $(IMAGE):2.1
 	docker push $(IMAGE):2.0
@@ -77,7 +78,7 @@ test/%:
 	docker run --rm -p 8000:8000 -t $(IMAGE):$* make test
 
 bash:
-	docker run --rm -it $(IMAGE):2.2 /bin/sh
+	docker run --rm -it $(IMAGE):3.0 /bin/sh
 
 .PHONY: version
 version:
@@ -92,7 +93,7 @@ version:
 # 3. `make release`
 # 4. `git push --follow-tags origin master`
 # 5. `chandler push`
-# 6. `make build docker/publish`
+# 6. `make docker/build docker/publish`
 release: clean
 	@-pip install twine wheel > /dev/null
 	python setup.py sdist bdist_wheel

README.md

@@ -33,6 +33,7 @@ class ArticleAdmin(DjangoObjectActions, admin.ModelAdmin):
     change_actions = ('publish_this', )
 ```
 
+
 Usage
 -----
 
@@ -189,6 +190,12 @@ Limitations
     security is planned for the future.
 
 
+Python and Django compatibility
+-------------------------------
+
+See [`tox.ini`](./tox.ini) for which Python and Django versions this supports.
+
+
 Demo Admin & Docker images
 --------------------------
 

tox.ini

@@ -9,6 +9,7 @@ envlist =
     django20-{py34,py35,py36,py37},
     django21-{py35,py36,py37},
     django22-{py36,py37},
+    django30-{py36,py37,py38},
     # run one of the tests again but with coverage
     coveralls-django21-py37,
 skipsdist = True
@@ -27,6 +28,7 @@ deps =
     django20: Django<2.1
     django21: Django<2.2
     django22: Django<2.3
+    django30: Django<3.1
 
 [testenv:coveralls-django21-py37]
 commands =