add filter, search text and per page choices

fet2020/finance/views.py

@@ -231,6 +231,71 @@ class ResolutionListView(LoginRequiredMixin, ListView):
 
     ordering = ["-id"]
     paginate_by = 10
+    _per_page = 10
+    _per_page_lst = ["10", "20", "50", "Alle"]
+
+    def get(self, request, *args, **kwargs):
+        self.q = request.GET.get("q", "")
+
+        self.options_filters = request.GET.getlist("options", [])
+
+        self._per_page = request.GET.get("paginate_by", "10")
+        if self._per_page == "Alle":
+            self.paginate_by = None
+        else:
+            self.paginate_by = self._per_page
+
+        return super().get(request, *args, **kwargs)
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+
+        context["q"] = self.q
+
+        # Add selected and all options
+        context["options"] = Resolution.Option.choices
+        context["selected_options"] = self.options_filters
+
+        # Add current per page value and list
+        context["per_page"] = self._per_page
+        context["per_page_values"] = self._per_page_lst
+
+        # Add paginator links
+        if context["is_paginated"]:
+            _page_obj = context["page_obj"]
+
+            base_url = "?"
+            for option in self.options_filters:
+                base_url += f"options={option}&".replace(" ", "+")
+            if self.q:
+                base_url += f"q={self.q}&".replace(" ", "+")
+            end_url = f"paginate_by={self._per_page}"
+
+            if _page_obj.has_previous():
+                context["prev_page"] = (
+                    f"{base_url}page={_page_obj.previous_page_number()}&{end_url}"
+                )
+                context["first_page"] = f"{base_url}page=1&{end_url}"
+
+            if _page_obj.has_next():
+                context["next_page"] = f"{base_url}page={_page_obj.next_page_number()}&{end_url}"
+                context["last_page"] = f"{base_url}page={_page_obj.paginator.num_pages}&{end_url}"
+
+        return context
+
+    def get_queryset(self):
+        qs = super().get_queryset()
+
+        if self.q:
+            qs = qs.filter(Q(name__icontains=self.q) | Q(voting_text__icontains=self.q))
+
+        if self.options_filters:
+            filter_lst = [
+                elem[0] for elem in Resolution.Option.choices if elem[1] in self.options_filters
+            ]
+            qs = qs.filter(option__in=filter_lst)
+
+        return qs
 
 
 class ResolutionUpdateView(LoginRequiredMixin, UpdateView):