Curso de Django Rest Course

Starter Code/api/migrations/0001_initial.py

@@ -0,0 +1,85 @@
+# Generated by Django 4.2.21 on 2025-09-10 18:32
+
+from django.conf import settings
+import django.contrib.auth.models
+import django.contrib.auth.validators
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('auth', '0012_alter_user_first_name_max_length'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='User',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('password', models.CharField(max_length=128, verbose_name='password')),
+                ('last_login', models.DateTimeField(blank=True, null=True, verbose_name='last login')),
+                ('is_superuser', models.BooleanField(default=False, help_text='Designates that this user has all permissions without explicitly assigning them.', verbose_name='superuser status')),
+                ('username', models.CharField(error_messages={'unique': 'A user with that username already exists.'}, help_text='Required. 150 characters or fewer. Letters, digits and @/./+/-/_ only.', max_length=150, unique=True, validators=[django.contrib.auth.validators.UnicodeUsernameValidator()], verbose_name='username')),
+                ('first_name', models.CharField(blank=True, max_length=150, verbose_name='first name')),
+                ('last_name', models.CharField(blank=True, max_length=150, verbose_name='last name')),
+                ('email', models.EmailField(blank=True, max_length=254, verbose_name='email address')),
+                ('is_staff', models.BooleanField(default=False, help_text='Designates whether the user can log into this admin site.', verbose_name='staff status')),
+                ('is_active', models.BooleanField(default=True, help_text='Designates whether this user should be treated as active. Unselect this instead of deleting accounts.', verbose_name='active')),
+                ('date_joined', models.DateTimeField(default=django.utils.timezone.now, verbose_name='date joined')),
+                ('groups', models.ManyToManyField(blank=True, help_text='The groups this user belongs to. A user will get all permissions granted to each of their groups.', related_name='user_set', related_query_name='user', to='auth.group', verbose_name='groups')),
+                ('user_permissions', models.ManyToManyField(blank=True, help_text='Specific permissions for this user.', related_name='user_set', related_query_name='user', to='auth.permission', verbose_name='user permissions')),
+            ],
+            options={
+                'verbose_name': 'user',
+                'verbose_name_plural': 'users',
+                'abstract': False,
+            },
+            managers=[
+                ('objects', django.contrib.auth.models.UserManager()),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Order',
+            fields=[
+                ('order_id', models.UUIDField(default=uuid.uuid4, primary_key=True, serialize=False)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('status', models.CharField(choices=[('PENDING', 'Pending'), ('COMPLETED', 'Completed'), ('CANCELED', 'Canceled')], default='PENDING', max_length=10)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Product',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=200)),
+                ('description', models.TextField()),
+                ('prices', models.DecimalField(decimal_places=2, default=0.0, max_digits=10)),
+                ('stock', models.IntegerField()),
+                ('image', models.ImageField(blank=True, null=True, upload_to='products/')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='OrderItem',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('quantity', models.PositiveIntegerField()),
+                ('order', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='api.order')),
+                ('product', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='api.product')),
+            ],
+        ),
+        migrations.AddField(
+            model_name='order',
+            name='products',
+            field=models.ManyToManyField(related_name='orders', through='api.OrderItem', to='api.product'),
+        ),
+        migrations.AddField(
+            model_name='order',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
+        ),
+    ]

Starter Code/api/models.py

@@ -1,2 +1,59 @@
+from uuid import uuid4
 from django.db import models
 from django.contrib.auth.models import AbstractUser
+
+
+class User(AbstractUser):
+    pass
+
+
+class Product(models.Model):
+    name = models.CharField(max_length=200)
+    description = models.TextField()
+    prices = models.DecimalField(max_digits=10, decimal_places=2, default=0.00)
+    stock = models.IntegerField()
+    image = models.ImageField(upload_to="products/", blank=True, null=True)
+
+    @property
+    def in_stock(self):
+        return self.stock > 0
+
+    def __str__(self):
+        return self.name
+
+
+class Order(models.Model):
+    class StatusChoices(models.TextChoices):
+        PENDING = "PENDING", "Pending"
+        COMPLETED = "COMPLETED", "Completed"
+        CANCELED = "CANCELED", "Canceled"
+
+    order_id = models.UUIDField(primary_key=True, default=uuid4)
+    user = models.ForeignKey(User, on_delete=models.CASCADE)
+    created_at = models.DateTimeField(auto_now_add=True)
+    status = models.CharField(
+        max_length=10,
+        choices=StatusChoices.choices,
+        default=StatusChoices.PENDING,
+    )
+
+    products = models.ManyToManyField(
+        Product, through="OrderItem", related_name="orders"
+    )
+
+    def __str__(self):
+        return f"Order {self.order_id} by {self.user.username}"
+
+
+class OrderItem(models.Model):
+    order = models.ForeignKey(Order, on_delete=models.CASCADE)
+    product = models.ForeignKey(Product, on_delete=models.CASCADE)
+    quantity = models.PositiveIntegerField()
+
+    @property
+    def item_subtotal(self):
+        return self.quantity * self.product.prices
+
+
+    def __str__(self):
+        return f"{self.quantity} x {self.product.name} in Order {self.order.order_id}"

Starter Code/drf_course/settings.py

@@ -26,6 +26,7 @@
     'django.contrib.messages',
     'django.contrib.staticfiles',
     'django_extensions',
+    'rest_framework',
     'api'
 ]
 
@@ -65,8 +66,12 @@
 
 DATABASES = {
     'default': {
-        'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': BASE_DIR / 'db.sqlite3',
+        'ENGINE': 'django.db.backends.postgresql_psycopg2',
+        'NAME': 'api',
+        'USER': 'postgres',
+        'PASSWORD': '1234',
+        'HOST': 'localhost',
+        'PORT': '5432',
     }
 }
 
@@ -110,4 +115,6 @@
 # Default primary key field type
 # https://docs.djangoproject.com/en/4.0/ref/settings/#default-auto-field
 
-DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
+DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
+
+AUTH_USER_MODEL = 'api.User'