renamed the model books to book (name of the models should be singular)

Deokhyun_Lee_reading/bookshelf/admin.py

 from django.contrib import admin
-from .models import Author, Books
+from .models import Author, Book
 
 
 # admin panel for Author model
@@ -13,12 +13,12 @@ class AuthorAdmin(admin.ModelAdmin):
 
 # admin panel for Books model
 class BooksAdmin(admin.ModelAdmin):
-    model = Books
+    model = Book
     list_display = ('title', 'author', 'publisher', 'year_published', 'ISBN', 'blurb')
     search_fields = ('title', 'author', 'publisher', 'year_published', 'ISBN', 'blurb')
     list_filter = ('title', 'author', 'publisher', 'year_published', 'ISBN', 'blurb')
 
 
 admin.site.register(Author, AuthorAdmin)
-admin.site.register(Books, BooksAdmin)
+admin.site.register(Book, BooksAdmin)
 

Deokhyun_Lee_reading/bookshelf/forms.py

 from django import forms
-from .models import Books
+from .models import Book, Author
 
 class AddBookForm(forms.ModelForm):
     class Meta:
-        model = Books
+        model = Book
+        fields = '__all__'
+
+class AddAuthorForm(forms.ModelForm):
+    class Meta:
+        model = Author
         fields = '__all__'
 
-    # def save(self, commit=True):
-    #     book = super().save(commit=False)
-    #     # Do any additional processing of the form data here
-    #     if commit:
-    #         book.save()
-    #     return book

Deokhyun_Lee_reading/bookshelf/migrations/0002_book_delete_books.py

+# Generated by Django 4.1.7 on 2023-04-25 11:22
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bookshelf', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Book',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=100)),
+                ('publisher', models.CharField(max_length=100)),
+                ('year_published', models.DateTimeField(verbose_name='year published')),
+                ('ISBN', models.CharField(max_length=13)),
+                ('blurb', models.CharField(max_length=250)),
+                ('author', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='bookshelf.author')),
+            ],
+        ),
+        migrations.DeleteModel(
+            name='Books',
+        ),
+    ]

Deokhyun_Lee_reading/bookshelf/migrations/0003_rename_book_books.py

+# Generated by Django 4.1.7 on 2023-04-25 11:24
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bookshelf', '0002_book_delete_books'),
+    ]
+
+    operations = [
+        migrations.RenameModel(
+            old_name='Book',
+            new_name='Books',
+        ),
+    ]

Deokhyun_Lee_reading/bookshelf/migrations/0004_rename_books_book.py

+# Generated by Django 4.1.7 on 2023-04-25 11:26
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bookshelf', '0003_rename_book_books'),
+    ]
+
+    operations = [
+        migrations.RenameModel(
+            old_name='Books',
+            new_name='Book',
+        ),
+    ]

Deokhyun_Lee_reading/bookshelf/models.py

@@ -14,12 +14,12 @@ class Author(models.Model):
         return self.first_name + " " + self.last_name
 
 
-# Books model
-class Books(models.Model):
+# Book model
+class Book(models.Model):
     title  = models.CharField(max_length = 100)
     author = models.ForeignKey(Author, on_delete = models.CASCADE)
     publisher = models.CharField(max_length = 100)
-    year_published = models.DateTimeField("date published")
+    year_published = models.DateTimeField("year published")
     ISBN = models.CharField(max_length = 13)
     blurb = models.CharField(max_length = 250)
     

Deokhyun_Lee_reading/bookshelf/views.py

@@ -2,7 +2,7 @@ from django.views import View
 from django.shortcuts import render, redirect
 from django.views.generic import ListView, DetailView, CreateView
 from django.shortcuts import render
-from .models import Author, Books
+from .models import Author, Book
 from .forms import AddBookForm
 
 # View for Home (landing page)
@@ -27,23 +27,23 @@ class AuthorDetailView(DetailView):
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
         # get by self == Author's id to get Book's foreign key that matches up.
-        context['books'] = Books.objects.filter(author = self.object)
+        context['books'] = Book.objects.filter(author = self.object)
         return context
 
 # Views for Books page
 class BookListView(ListView):
-    model = Books
+    model = Book
     template_name = 'books/books.html'
     context_object_name = 'books'
     ordering = ['id']
 
 class BookDetailView(DetailView):
-    model = Books
+    model = Book
     template_name = 'books/book_details.html'
     context_object_name = 'book'
 
 class BookAddListView(CreateView):
-    model = Books
+    model = Book
     fields = '__all__'
     template_name = "books/add-book.html"
 
@@ -55,4 +55,5 @@ class BookAddListView(CreateView):
             # pass the pk and redirect. 
             return redirect('book_detail', pk = new_book.pk)
         else:
-            return render(request, 'book_details.html', {'form': form})
\ No newline at end of file
+            return render(request, 'book_details.html', {'form': form})
+