Built models of bookshelf app

neilocampo_reading/bookshelf/migrations/0001_initial.py

+# Generated by Django 4.1.7 on 2023-03-27 16:58
+
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Author',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('first_name', models.CharField(max_length=100)),
+                ('last_name', models.CharField(max_length=100)),
+                ('age', models.PositiveIntegerField()),
+                ('nationality', models.CharField(max_length=100)),
+                ('bio', models.TextField(max_length=700)),
+            ],
+        ),
+        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.PositiveIntegerField()),
+                ('ISBN', models.IntegerField(validators=[django.core.validators.MaxValueValidator(9999999999999)])),
+                ('blurb', models.TextField(max_length=700, validators=[django.core.validators.MinLengthValidator(100, 'blurb must contain at least 100 characters')])),
+                ('author', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='bookshelf.author')),
+            ],
+        ),
+    ]

neilocampo_reading/bookshelf/models.py

 from django.db import models
+from django.core.validators import MaxValueValidator, MinLengthValidator
 
-# Create your models here.
+class Author(models.Model):
+    first_name = models.CharField(max_length=100)
+    last_name = models.CharField(max_length=100)
+    age = models.PositiveIntegerField()
+    nationality = models.CharField(max_length=100)
+    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=100)
+    author = models.ForeignKey(Author, on_delete=models.CASCADE)
+    publisher = models.CharField(max_length=100)
+    year_published = models.PositiveIntegerField()
+    ISBN = models.IntegerField(validators=[MaxValueValidator(9999999999999)])
+    blurb = models.TextField(
+        validators=[
+            MinLengthValidator(100, 'blurb must contain at least 100 characters')
+            ],
+        max_length=700
+        )
+    
+    def __str__(self):
+        return '{} by {}'.format(self.title, self.author)
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