payments app bootstrap with two models and admin

./manage.py startapp payments
./manage.py makemigrations payments
./manage.py migrate

Author: kvbik

.gitignore

@@ -1,2 +1,3 @@
 /PY/
+/db.sqlite3
 *.py[co]

payments/__init__.py

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+from django.contrib import admin
+
+from .models import Order, Payment
+
+admin.site.register(Order)
+admin.site.register(Payment)
+

payments/admin.py

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+from django.apps import AppConfig
+
+
+class PaymentsConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'payments'

payments/apps.py

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+# Generated by Django 5.0.4 on 2024-04-08 07:50
+
+import django.db.models.deletion
+import payments.models
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Order',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('description', models.CharField(max_length=200)),
+                ('buyer', models.EmailField(max_length=254)),
+                ('price', models.IntegerField()),
+                ('purchased', models.DateTimeField(verbose_name='date of purchase')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Payment',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('address', models.CharField(max_length=128)),
+                ('amount', models.IntegerField()),
+                ('expire', models.DateTimeField(default=payments.models.get_default_expire, verbose_name='payment is not accepted after')),
+                ('is_paid', models.BooleanField(default=False)),
+                ('order', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='payments', to='payments.order')),
+            ],
+        ),
+    ]

payments/migrations/0001_initial.py

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+import datetime
+
+from django.conf import settings
+from django.db import models
+from django.utils import timezone
+
+
+class Order(models.Model):
+    description = models.CharField(max_length=200)
+    buyer = models.EmailField()
+    price = models.IntegerField()
+    purchased = models.DateTimeField("date of purchase")
+
+    def pending_payments(self):
+        now = timezone.now()
+        return self.payments.filter(expire__gte=now)
+
+    def is_paid(self):
+        return self.payments.filter(is_paid=True).exists()
+
+    def __str__(self):
+        return '{} for ${}'.format(self.description, self.price)
+
+
+def get_default_expire():
+    return timezone.now() + datetime.timedelta(hours=1)
+
+class Payment(models.Model):
+    order = models.ForeignKey(Order, related_name='payments', on_delete=models.CASCADE)
+    address = models.CharField(max_length=128)
+    amount = models.IntegerField()
+    expire = models.DateTimeField("payment is not accepted after", default=get_default_expire)
+    is_paid = models.BooleanField(default=False)
+
+    def confirm(self):
+        self.is_paid = True
+        self.save()
+
+    def __str__(self):
+        return '{} in {} wei'.format(self.order, self.amount)
+

payments/migrations/__init__.py

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+from django.test import TestCase
+
+# Create your tests here.

payments/models.py

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+from django.shortcuts import render
+
+# Create your views here.

payments/tests.py

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 # Application definition
 
 INSTALLED_APPS = [
+    "payments.apps.PaymentsConfig",
     'django.contrib.admin',
     'django.contrib.auth',
     'django.contrib.contenttypes',