Bugfix: Acesso sem selecionar fazenda

As ListViews não verificavam a existência de uma fazenda selecionada antes de exibir seu conteúdo, permitindo um acesso não intencionado

multigranja/apps/entities/views/list/base.py

@@ -1,6 +1,7 @@
 from django.views.generic import ListView
 from django.db.models import Q
 from entities.models.farm import Farm
+from django.shortcuts import redirect
 
 class BaseListView(ListView):
     template_name = "entity_list.html"
@@ -21,8 +22,12 @@ class BaseListView(ListView):
 
     # Acts like a init function - provides the select_farm Farm object to all dependent views
     def dispatch(self, request, *args, **kwargs):
-        farm_id = self.request.session.get('selected_farm_id')
-        self.selected_farm = Farm.objects.filter(id=farm_id).first()
+        try: # Prevents Django from loading the page without a selected farm
+            farm_id = request.session['selected_farm_id']
+        except KeyError:
+            return redirect('entities:user:farm_select')
+        
+        self.selected_farm = Farm.objects.filter(id=farm_id, users=request.user).first()
         return super().dispatch(request, *args, **kwargs)
 
     # Filter