feat(orders): добавлены поля скидок в Order и OrderItem
Интеграция системы скидок с моделями заказов: Order: - applied_discount: ForeignKey на Discount - discount_amount: сумма скидки на заказ - applied_promo_code: использованный промокод - calculate_total(): обновлён с учётом скидки OrderItem: - applied_discount: ForeignKey на Discount - discount_amount: сумма скидки на позицию - get_total_price(): обновлён с учётом скидки Миграция: - 0003_order_applied_discount... добавляет новые поля Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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# Generated by Django 5.0.10 on 2026-01-10 21:12
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import django.db.models.deletion
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from django.db import migrations, models
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class Migration(migrations.Migration):
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dependencies = [
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('discounts', '0001_initial'),
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('orders', '0002_initial'),
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]
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operations = [
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migrations.AddField(
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model_name='order',
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name='applied_discount',
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field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='orders', to='discounts.discount', verbose_name='Примененная скидка'),
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),
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migrations.AddField(
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model_name='order',
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name='applied_promo_code',
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field=models.CharField(blank=True, max_length=50, null=True, verbose_name='Использованный промокод'),
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),
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migrations.AddField(
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model_name='order',
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name='discount_amount',
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field=models.DecimalField(decimal_places=2, default=0, max_digits=10, verbose_name='Сумма скидки'),
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),
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migrations.AddField(
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model_name='orderitem',
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name='applied_discount',
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field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='order_items', to='discounts.discount', verbose_name='Скидка на позицию'),
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),
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migrations.AddField(
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model_name='orderitem',
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name='discount_amount',
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field=models.DecimalField(decimal_places=2, default=0, max_digits=10, verbose_name='Сумма скидки'),
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),
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]
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