added eedit book page

nishaespera_reading/bookshelf/templates/bookshelf/book_details.html

@@ -20,6 +20,7 @@
     <h4> ISBN: {{ object.ISBN }} </h4>
     <p> Blurb: {{ object.blurb }} </p>
     <div class="btns">
+        <a href="{{ object.get_absolute_url }}edit" class="btn"> Edit Book </a>
         <a href="/home/" class="btn"> Home </a>
         <a href="/books/" class="btn"> Books </a>
         <a href="/authors/" class="btn"> Authors </a>

nishaespera_reading/bookshelf/templates/bookshelf/edit-book.html

+{% extends 'base.html' %}
+{% block title %} Edit Book {% endblock %}
+{% block body %}
+<form method='POST'>
+    {% csrf_token %}
+    {{ form }}
+    <input type='Submit' value='Save Changes'>
+</form>
+{% endblock %}
\ No newline at end of file

nishaespera_reading/bookshelf/urls.py

@@ -2,13 +2,14 @@ from django.urls import path
 
 from . import views
 from .views import (BooksListView, BooksDetailView, BooksCreateView, AuthorsListView, 
-                    AuthorsDetailView, AuthorsCreateView, )
+                    AuthorsDetailView, AuthorsCreateView, BooksUpdateView)
 
 urlpatterns = [
     path('home/', views.homepage_view, name='home'),
     path('books/', BooksListView.as_view(), name='books'),
     path('books/<int:pk>/details/', BooksDetailView.as_view(), name='book_details'),
     path('home/books/add/', BooksCreateView.as_view(), name='add-book'),
+    path('books/<int:pk>/details/edit/', BooksUpdateView.as_view(), name='edit-book'),
     path('authors/', AuthorsListView.as_view(), name='authors'),
     path('authors/<int:pk>/details/', AuthorsDetailView.as_view(), name='author_details'),
     path('home/authors/add/', AuthorsCreateView.as_view(), name='add-author'),

nishaespera_reading/bookshelf/views.py

@@ -3,7 +3,7 @@ from django.http import HttpResponse
 from django.views import View
 from django.views.generic.list import ListView
 from django.views.generic.detail import DetailView
-from django.views.generic.edit import CreateView
+from django.views.generic.edit import CreateView, UpdateView
 
 from .models import Author, Books
 from .forms import BooksForm, AuthorForm
@@ -66,6 +66,11 @@ class BooksCreateView(CreateView):
     template_name = 'bookshelf/add-book.html'
     fields = '__all__'
 
+class BooksUpdateView(UpdateView):
+    model = Books
+    fields = '__all__'
+    template_name = 'bookshelf/edit-book.html'
+
 class AuthorsListView(ListView):
     model = Author
     template_name = 'bookshelf/authors.html'
@@ -77,5 +82,4 @@ class AuthorsDetailView(DetailView):
 class AuthorsCreateView(CreateView):
     model = Author
     template_name = 'bookshelf/add-author.html'
-    fields = '__all__'
-
+    fields = '__all__'
\ No newline at end of file