feat(category): add slug filters for category list

alexandria/core/filters.py

@@ -17,6 +17,10 @@
 from alexandria.core import models
 
 
+class CharInFilter(BaseInFilter, CharFilter):
+    pass
+
+
 class JSONValueFilter(Filter):
     field_type_by_lookup_expr = {
         "exact": TextField,
@@ -114,10 +118,12 @@ class CategoryFilterSet(FilterSet):
     metainfo = JSONValueFilter(field_name="metainfo")
     active_group = ActiveGroupFilter()
     has_parent = BooleanFilter(field_name="parent", lookup_expr="isnull", exclude=True)
+    slug = CharFilter()
+    slugs = CharInFilter(field_name="slug", lookup_expr="in")
 
     class Meta:
         model = models.Category
-        fields = ["active_group", "metainfo", "has_parent"]
+        fields = ["active_group", "metainfo", "has_parent", "slug", "slugs"]
 
 
 class DocumentFilterSet(FilterSet):

alexandria/core/tests/test_filters.py

@@ -323,3 +323,24 @@ def test_has_parent(db, admin_client, category_factory, has_parent, expected_cou
 
     received_ids = set([obj["id"] for obj in result["data"]])
     assert len(received_ids) == expected_count
+
+
+@pytest.mark.parametrize(
+    "filters,expected_count",
+    [
+        ({"filter[slug]": "category-1"}, 1),
+        ({"filter[slug]": "category-none"}, 0),
+        ({"filter[slugs]": "category-1,category-2"}, 2),
+        ({"filter[slugs]": "category-1,category-none"}, 1),
+    ],
+)
+def test_category_slug_filters(
+    db, admin_client, category_factory, filters, expected_count
+):
+    category_factory(pk="category-1")
+    category_factory(pk="category-2")
+    category_factory(pk="category-3")
+
+    response = admin_client.get(reverse("category-list"), filters)
+    assert response.status_code == HTTP_200_OK
+    assert len(response.json()["data"]) == expected_count