Добавлена модель документа списания товаров (WriteOffDocument)

- Создана модель WriteOffDocument для коллективного списания с поддержкой статусов (черновик/проведен/отменен)
- Добавлена модель WriteOffDocumentItem для позиций документа
- Расширена модель Reservation связью с WriteOffDocumentItem для резервирования товара в черновике
- Добавлен тип счетчика 'writeoff' в DocumentCounter для автонумерации
- Реализована логика резервирования товара в черновике документа (уменьшает quantity_free)
- При проведении документа создаются WriteOff записи по методу FIFO
This commit is contained in:
2025-12-10 23:34:43 +03:00
parent c76163640e
commit 56a04ae4be
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# Generated by Django 5.0.10 on 2025-12-10 19:21
import django.db.models.deletion
from django.conf import settings
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
('inventory', '0009_fix_showcase_items_status'),
('products', '0010_alter_product_cost_price'),
migrations.swappable_dependency(settings.AUTH_USER_MODEL),
]
operations = [
migrations.AlterField(
model_name='documentcounter',
name='counter_type',
field=models.CharField(choices=[('transfer', 'Перемещение товара'), ('writeoff', 'Списание товара')], max_length=20, unique=True, verbose_name='Тип счетчика'),
),
migrations.CreateModel(
name='WriteOffDocument',
fields=[
('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('document_number', models.CharField(db_index=True, max_length=100, unique=True, verbose_name='Номер документа')),
('status', models.CharField(choices=[('draft', 'Черновик'), ('confirmed', 'Проведён'), ('cancelled', 'Отменён')], db_index=True, default='draft', max_length=20, verbose_name='Статус')),
('date', models.DateField(help_text='Дата, к которой относится списание', verbose_name='Дата документа')),
('notes', models.TextField(blank=True, null=True, verbose_name='Примечания')),
('confirmed_at', models.DateTimeField(blank=True, null=True, verbose_name='Дата проведения')),
('created_at', models.DateTimeField(auto_now_add=True, verbose_name='Создан')),
('updated_at', models.DateTimeField(auto_now=True, verbose_name='Обновлён')),
('confirmed_by', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='confirmed_writeoff_documents', to=settings.AUTH_USER_MODEL, verbose_name='Провёл')),
('created_by', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='created_writeoff_documents', to=settings.AUTH_USER_MODEL, verbose_name='Создал')),
('warehouse', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='writeoff_documents', to='inventory.warehouse', verbose_name='Склад')),
],
options={
'verbose_name': 'Документ списания',
'verbose_name_plural': 'Документы списания',
'ordering': ['-date', '-created_at'],
},
),
migrations.CreateModel(
name='WriteOffDocumentItem',
fields=[
('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('quantity', models.DecimalField(decimal_places=3, max_digits=10, verbose_name='Количество')),
('reason', models.CharField(choices=[('damage', 'Повреждение'), ('spoilage', 'Порча'), ('shortage', 'Недостача'), ('inventory', 'Инвентаризационная недостача'), ('other', 'Другое')], default='damage', max_length=20, verbose_name='Причина списания')),
('notes', models.TextField(blank=True, null=True, verbose_name='Примечания')),
('created_at', models.DateTimeField(auto_now_add=True)),
('updated_at', models.DateTimeField(auto_now=True)),
('document', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='items', to='inventory.writeoffdocument', verbose_name='Документ')),
('product', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='writeoff_document_items', to='products.product', verbose_name='Товар')),
('reservation', models.OneToOneField(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='writeoff_document_item_reverse', to='inventory.reservation', verbose_name='Резерв')),
],
options={
'verbose_name': 'Позиция документа списания',
'verbose_name_plural': 'Позиции документа списания',
'ordering': ['id'],
},
),
migrations.AddField(
model_name='reservation',
name='writeoff_document_item',
field=models.ForeignKey(blank=True, help_text='Резерв для документа списания (черновик)', null=True, on_delete=django.db.models.deletion.CASCADE, related_name='reservations', to='inventory.writeoffdocumentitem', verbose_name='Позиция документа списания'),
),
migrations.AddIndex(
model_name='writeoffdocument',
index=models.Index(fields=['document_number'], name='inventory_w_documen_a9ae00_idx'),
),
migrations.AddIndex(
model_name='writeoffdocument',
index=models.Index(fields=['warehouse', 'status'], name='inventory_w_warehou_69fbf6_idx'),
),
migrations.AddIndex(
model_name='writeoffdocument',
index=models.Index(fields=['date'], name='inventory_w_date_a853cb_idx'),
),
migrations.AddIndex(
model_name='writeoffdocument',
index=models.Index(fields=['-created_at'], name='inventory_w_created_02c298_idx'),
),
migrations.AddIndex(
model_name='writeoffdocumentitem',
index=models.Index(fields=['document'], name='inventory_w_documen_d77c5e_idx'),
),
migrations.AddIndex(
model_name='writeoffdocumentitem',
index=models.Index(fields=['product'], name='inventory_w_product_6e32fc_idx'),
),
]