Add user-configurable pagination and enhance case view filters

generic/mixins.py

@@ -62,3 +62,22 @@ class AuthorMixin():
     def remove_author(self, user: User):
         """Remove an author from the object"""
         self.author.remove(user)
+
+
+class UserConfigurablePaginationMixin:
+    default_per_page = 25
+    allowed_per_page = [25, 50, 100, 250, 500]
+
+    def get_table_pagination(self, table):
+        try:
+            per_page = int(self.request.GET.get("per_page", self.default_per_page))
+            if per_page not in self.allowed_per_page:
+                per_page = self.default_per_page
+        except (TypeError, ValueError):
+            per_page = self.default_per_page
+        return {"per_page": per_page}
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context["page_sizes"] = [25, 50, 100, 250, 500]
+        return context