Added edit feature for books and author

je_siongco_reading/bookshelf/urls.py

 from django.urls import path
 
 from .views import (
-    BooksListView, BooksDetailView, AuthorsDetailView, AuthorsListView, HomepageView, AuthorCreateView, BooksCreateView
+    BooksListView, BooksDetailView, AuthorsDetailView, AuthorsListView, 
+    HomepageView, AuthorCreateView, BooksCreateView, BooksUpdateView,
+    AuthorUpdateView
 )
 
 urlpatterns = [
@@ -12,4 +14,6 @@ urlpatterns = [
     path('home/', HomepageView, name='home'),
     path('authors/add/', AuthorCreateView.as_view(), name='add-author'),
     path('books/add/', BooksCreateView.as_view(), name='add-author'),
+    path('books/<int:pk>/edit/', BooksUpdateView.as_view(), name='edit-book'),
+    path('authors/<int:pk>/edit/', AuthorUpdateView.as_view(), name='edit-author'),
 ]

je_siongco_reading/bookshelf/views.py

@@ -3,7 +3,7 @@ from django.shortcuts import render
 from django.template import loader
 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
 
@@ -41,6 +41,17 @@ class BooksCreateView(CreateView):
     fields = '__all__'
     template_name = 'add-book.html'
 
+
+class BooksUpdateView(UpdateView):
+    model = Books
+    fields = '__all__'
+    template_name = "edit-book.html"
+
+
+class AuthorUpdateView(UpdateView):
+    model = Author
+    fields = '__all__'
+    template_name = "edit-author.html"
 '''
     books = Books.objects.filter(author=Author)
     extra_context = {'books': books.author.all()}

je_siongco_reading/templates/author_details.html

@@ -6,6 +6,8 @@
 {% block content %}
 {% block body %}
 {% endblock %}
+<button type = "button" 
+onclick="window.location.href='../edit/'">Edit Author</button>
 <a href="/home/">Home</a>
 <a href="/books/">Books</a>
 <a href="/authors/">Authors</a>

je_siongco_reading/templates/book_details.html

@@ -7,7 +7,8 @@
 
 {% block body %}
 {% endblock %}
-
+<button type = "button" 
+onclick="window.location.href='../edit/'">Edit Book</button>
 <a href="/home/">Home</a>
 <a href="/books/">Books</a>
 <a href="/authors/">Authors</a>

je_siongco_reading/templates/edit-author.html

+<form method="post">{% csrf_token %}
+    {{ form.as_p }}
+    <input type="submit" value="Update">
+</form>
\ No newline at end of file

je_siongco_reading/templates/edit-book.html

+<form method="post">{% csrf_token %}
+    {{ form.as_p }}
+    <input type="submit" value="Update">
+</form>
\ No newline at end of file