setup ruff as a flake8 replacement

.github/workflows/ci.yml

@@ -63,5 +63,5 @@ jobs:
       - name: Run style checks
         run: python -m black . --check
 
-      - name: Run PEP8 style checks
-        run: python -m flake8
+      - name: Run ruff linter
+        run: python -m ruff check .

.pre-commit-config.yaml

@@ -23,8 +23,8 @@ repos:
         entry: black . --check
         language: system
         pass_filenames: false
-      - id: flake8-check
-        name: Check PEP8
-        entry: flake8
+      - id: ruff-check
+        name: Run ruff linter
+        entry: ruff check .
         language: system
         pass_filenames: false

.ruff.toml

@@ -0,0 +1,5 @@
+line-length = 88
+
+[lint]
+select = ["E", "F", "W", "B"]
+ignore = []

dakara_server/internal/cache_model.py

@@ -37,17 +37,8 @@ def _manage_on_delete_fields(self):
         cache model. Instead, we execute the on-delete action with the
         `pre_delete` signal of the related field.
         """
-        for field in self.model._meta.concrete_fields:
-            # only consider foreign key fields with the callable attribute
-            # "cache_on_delete"
-            if not isinstance(field, models.ForeignKey):
-                continue
-
-            on_delete = getattr(field, "cache_on_delete", None)
-
-            if not callable(on_delete):
-                raise TypeError("cache_on_delete must be callable")
 
+        def handle_decorator(field):
             # register the handle to the pre_delete signal
             @receiver(
                 pre_delete,
@@ -59,10 +50,23 @@ def _manage_on_delete_fields(self):
             )
             def handle(sender, **kwargs):
                 instance = kwargs.get("instance")
-                on_delete(instance, self)
+                field.cache_on_delete(instance, self)
+
+            return handle
+
+        for field in self.model._meta.concrete_fields:
+            # only consider foreign key fields with the callable attribute
+            # "cache_on_delete"
+            if not isinstance(field, models.ForeignKey):
+                continue
+
+            on_delete = getattr(field, "cache_on_delete", None)
+
+            if not callable(on_delete):
+                raise TypeError("cache_on_delete must be callable")
 
             # store the handle
-            self._on_delete_funcs[field.name] = handle
+            self._on_delete_funcs[field.name] = handle_decorator(field)
 
     @contextmanager
     def _access_store(self):
@@ -233,7 +237,7 @@ def __new__(cls, name, bases, attrs):
         # create and connect cache manager
         manager = CacheManager()
         manager._connect(new_class)
-        setattr(new_class, "cache", manager)
+        new_class.cache = manager
 
         return new_class
 
@@ -279,7 +283,7 @@ class CacheOnDeleteMixin:
     """
 
     def __init__(self, to, on_delete, *args, **kwargs):
-        super().__init__(to, on_delete=models.DO_NOTHING, *args, **kwargs)
+        super().__init__(to, *args, on_delete=models.DO_NOTHING, **kwargs)
         self.cache_on_delete = on_delete
 
 

requirements_dev.txt

@@ -8,3 +8,4 @@ pytest-cov>=4.0.0,<4.1.0
 pytest-django>=4.5.2,<4.6.0
 pytest-mock>=3.10.0,<3.11.0
 pytest>=7.2.0,<7.3.0
+ruff>=0.3.0,<0.4.0

setup.cfg

@@ -1,7 +1,3 @@
-[flake8]
-max-line-length = 88
-ignore = E203, W503
-
 [coverage:run]
 omit = */tests/*, */conftest.py