catch wrong post id

fet2020/posts/views.py

@@ -3,7 +3,7 @@ import logging
 from collections import deque
 from django.conf import settings
 from django.contrib import messages
-from django.http import HttpResponse, JsonResponse, HttpResponseServerError
+from django.http import HttpResponse, JsonResponse, HttpResponseServerError, Http404
 from django.shortcuts import render
 from django.template.loader import render_to_string
 from django.utils import timezone
@@ -115,13 +115,18 @@ def tags(request, tag=""):
 
 
 def __get_post_object(id=None):
-    if id.isdigit() or id is int:
-        return Post.objects.get(id=int(id))
-    elif id != "" and id is not None:
-        return Post.objects.get(slug=id)
+    post = None
 
-    return None
+    try:
+        if id.isdigit() or id is int:
+            post = Post.objects.get(id=int(id))
+        elif id != "" and id is not None:
+            post = Post.objects.get(slug=id)
+    except Exception:
+        logger.info("Wrong id '{}'".format(id))
+        raise Http404("wrong post id")
 
+    return post
 
 def show(request, id=None):
     p = __get_post_object(id)