registered author and books models

nishaespera_reading/bookshelf/admin.py

 from django.contrib import admin
 
+from .models import Author, Books
+
+class BooksInLine(admin.TabularInline):
+    model = Books
+
+class AuthorAdmin(admin.ModelAdmin):
+    model = Author
+    list_display = ('first_name', 'last_name', 'age', 'nationality')
+    search_fields = ['first_name', 'last_name']
+
+    inlines = [BooksInLine]
+
+class BooksAdmin(admin.ModelAdmin):
+    list_display = ('title', 'author', 'publisher', 'year_published', 'ISBN')
+
+    def get_title(self, obj):
+        return obj.books.title
+    
+    get_title.short_description = "Book Title"
+
+admin.site.register(Author, AuthorAdmin)
+admin.site.register(Books, BooksAdmin)
\ No newline at end of file

nishaespera_reading/bookshelf/models.py

@@ -26,6 +26,7 @@ class Books(models.Model):
         )
     ISBN = models.CharField(max_length = 13, validators = [MinValueValidator(13), verify_int])
     blurb = models.CharField(max_length = 200, validators = [MinValueValidator(100)])
+    
     def __str__(self):
         return self.title