Added a __str__ method to return the key of the model object when called in admin for ease of use

mattarpas_reading/bookshelf/models.py

@@ -7,6 +7,9 @@ class Author(models.Model):
     nationality = models.CharField(max_length=50)
     bio = models.TextField(max_length=700)
 
+    def __str__(self):
+        return '{}, {}'.format(self.first_name, self.last_name)
+
 class Book(models.Model):
     title = models.CharField(max_length=180)
     author = models.ForeignKey(Author, on_delete=models.CASCADE)
@@ -14,3 +17,6 @@ class Book(models.Model):
     year_published = models.CharField(max_length=4)
     ISBN = models.CharField(max_length=13)
     blurb = models.TextField(max_length=200)
+
+    def __str__(self):
+        return self.title