Created Models

anchisilang_reading/bookshelf/models.py

 from django.db import models
+from django.core.validators import MaxValueValidator, MinValueValidator, MaxLengthValidator, MinLengthValidator
+from django.urls import reverse
 
 # Create your models here.
+class Author(models.Model):
+    first_name=models.CharField(max_length=100)
+    last_name=models.CharField(max_length=100)
+    age=models.IntegerField(
+        validators =[MinValueValidator(1)]
+    )
+    nationality=models.CharField(max_length=100)
+    bio=models.CharField(max_length=700, null=True)
+    
+    def __str__(self):
+        return'{} {}'.format(self.first_name, self.last_name)
+    
+    def get_absolute_url(self):
+        return reverse("Author_details", kwargs={"pk": self.pk})
+    
+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.DateField()
+    ISBN=models.BigIntegerField(
+        validators =[MinValueValidator(1000000000000), MaxValueValidator(9999999999999)]
+    )
+    blurb=models.TextField(
+        validators =[
+            MinLengthValidator(100),
+            MaxLengthValidator(200)
+        ]
+    )
+    
+    def __str__(self):
+        return'{}'.format(self.title)
+    
+    def get_absolute_url(self):
+        return reverse("Book_details", kwargs={'pk': self.pk})
\ No newline at end of file