Refactor Views

Signed-off-by: Tushar Goel <tushar.goel.dav@gmail.com>

Author: TG1999

vulnerabilities/views.py

@@ -14,6 +14,7 @@
 from django.contrib import messages
 from django.core.exceptions import ValidationError
 from django.core.mail import send_mail
+from django.db.models import Prefetch
 from django.http.response import Http404
 from django.shortcuts import redirect
 from django.shortcuts import render
@@ -22,7 +23,6 @@
 from django.views import generic
 from django.views.generic.detail import DetailView
 from django.views.generic.list import ListView
-from django.db.models import Prefetch
 
 from vulnerabilities import models
 from vulnerabilities.forms import ApiUserCreationForm
@@ -159,30 +159,26 @@ def get_queryset(self):
                 "exploits",
                 Prefetch(
                     "affecting_packages",
-                    queryset=models.Package.objects.only(
-                        "type", "namespace", "name", "version"
-                    ),
+                    queryset=models.Package.objects.only("type", "namespace", "name", "version"),
                 ),
                 Prefetch(
                     "fixed_by_packages",
-                    queryset=models.Package.objects.only(
-                        "type", "namespace", "name", "version"
-                    ),
+                    queryset=models.Package.objects.only("type", "namespace", "name", "version"),
                 ),
             )
         )
 
-
     def get_context_data(self, **kwargs):
         """
         Build context with preloaded QuerySets and minimize redundant queries.
         """
         context = super().get_context_data(**kwargs)
         vulnerability = self.object
-        
+
         # Pre-fetch and process data in Python instead of the template
         weaknesses_present_in_db = [
-            weakness_object for weakness_object in vulnerability.weaknesses.all()
+            weakness_object
+            for weakness_object in vulnerability.weaknesses.all()
             if weakness_object.weakness
         ]
 
@@ -201,6 +197,7 @@ def get_context_data(self, **kwargs):
         )
         return context
 
+
 class HomePage(View):
     template_name = "index.html"
 
@@ -285,19 +282,19 @@ def get_queryset(self):
         """
         Prefetch and optimize related data to minimize database hits.
         """
-        return super().get_queryset().prefetch_related(
-            Prefetch(
+        return (
+            super()
+            .get_queryset()
+            .prefetch_related(
+                Prefetch(
                     "affecting_packages",
-                    queryset=models.Package.objects.only(
-                        "type", "namespace", "name", "version"
-                    ),
+                    queryset=models.Package.objects.only("type", "namespace", "name", "version"),
                 ),
                 Prefetch(
                     "fixed_by_packages",
-                    queryset=models.Package.objects.only(
-                        "type", "namespace", "name", "version"
-                    ),
+                    queryset=models.Package.objects.only("type", "namespace", "name", "version"),
                 ),
+            )
         )
 
     def get_context_data(self, **kwargs):
@@ -311,9 +308,11 @@ def get_context_data(self, **kwargs):
             sorted_affected_packages,
             all_affected_fixed_by_matches,
         ) = vulnerability.aggregate_fixed_and_affected_packages()
-        context.update({
-            "affected_packages": sorted_affected_packages,
-            "fixed_by_packages": sorted_fixed_by_packages,
-            "all_affected_fixed_by_matches": all_affected_fixed_by_matches,
-        })
+        context.update(
+            {
+                "affected_packages": sorted_affected_packages,
+                "fixed_by_packages": sorted_fixed_by_packages,
+                "all_affected_fixed_by_matches": all_affected_fixed_by_matches,
+            }
+        )
         return context

vulnerablecode/urls.py

@@ -26,7 +26,8 @@
 from vulnerabilities.views import HomePage
 from vulnerabilities.views import PackageDetails
 from vulnerabilities.views import PackageSearch
-from vulnerabilities.views import VulnerabilityDetails, VulnerabilityPackagesDetails
+from vulnerabilities.views import VulnerabilityDetails
+from vulnerabilities.views import VulnerabilityPackagesDetails
 from vulnerabilities.views import VulnerabilitySearch
 from vulnerablecode.settings import DEBUG_TOOLBAR