backend: get single book api done

backend/BookShelf/settings.py

@@ -143,3 +143,4 @@
 
 DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
 AUTH_USER_MODEL = 'user_api.User'
+APPEND_SLASH = True

backend/book_api/urls/v1.py

@@ -4,5 +4,6 @@
 
 
 urlpatterns = [
-    path('', v1.BookView.as_view())
+    path('', v1.BookView.as_view()),
+    path('<int:pk>/', v1.BookView.as_view()),
 ]

backend/book_api/views/v1.py

@@ -1,5 +1,7 @@
 from rest_framework.views import APIView
+from rest_framework.response import Response
 from rest_framework.permissions import AllowAny
+from rest_framework.exceptions import NotFound
 
 from BookShelf.utilities.pagination import Pagination
 
@@ -12,9 +14,19 @@ class BookView(APIView):
     permission_classes = [AllowAny]
 
     def get(self, request, *args, **kwargs):
+        pk = kwargs.get('pk', None)
+
+        if pk:
+            try:
+                book = Book.objects.get(pk=pk, is_deleted=False)
+            except Book.DoesNotExist:
+                raise NotFound(detail="Book not found.")
+
+            return Response(BookSerializer(book).data)
+
         books = Book.objects.filter(
             is_deleted=False
-        )
+        ).order_by('id')
         paginator = Pagination()
         page = paginator.paginate_queryset(books, request)
         serializer = BookSerializer(page, many=True)