views.pyの修正

accounts/views.py

@@ -1,7 +1,7 @@
 from django.conf import settings
 from django.contrib.auth import authenticate, login
 from django.contrib.auth.mixins import LoginRequiredMixin
-from django.shortcuts import render
+from django.shortcuts import get_object_or_404
 from django.urls import reverse_lazy
 from django.views.generic import CreateView, TemplateView
 
@@ -28,11 +28,9 @@ def form_valid(self, form):
 class UserProfileView(LoginRequiredMixin, TemplateView):
     template_name = "accounts/profile.html"
 
-    def get(self, request, username):
-        user = User.objects.get(username=username)
-        tweets = Tweet.objects.filter(user=user).order_by("-created_at")
-        return render(
-            request,
-            self.template_name,
-            {"user": user, "tweets": tweets},
-        )
+    def get_context_data(self, username):
+        context = super().get_context_data()
+        user = get_object_or_404(User, username)
+        context["user"] = username
+        context["tweets"] = Tweet.objects.select_related("user").filter(user=user).order_by("-created_at")
+        return context