forked from erp-dev/erp
839 lines
28 KiB
Python
839 lines
28 KiB
Python
from __future__ import annotations
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from decimal import Decimal
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from typing import List
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from django.db import models
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from flower.common import ModelBase
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from basic_info import models as basic_info_models
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class PurchaseOrderKindEnum(models.IntegerChoices):
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"""采购单类型"""
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WHOLESALE = 1, '大货'
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SAMPLE = 2, '样板'
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class PurchaseOrderStatusEnum(models.IntegerChoices):
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"""采购单状态"""
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PENDING = 1, '审批中'
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APPROVED = 2, '审批通过'
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CANCELLED = 3, '作废'
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class OrderItemsAggregationMixin:
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"""
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提供订单金额/数量聚合的通用实现。
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默认读取 `items` 关联管理器，可在子类通过 `order_items_accessor`
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覆盖以适配不同的关联名称。
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"""
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order_items_accessor = 'items'
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def _iter_order_items(self):
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return getattr(self, self.order_items_accessor).all()
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def get_total_amount(self) -> Decimal:
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total = Decimal('0')
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for item in self._iter_order_items():
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total += Decimal(item.total_amount())
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return total
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def get_total_quantity(self) -> Decimal:
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total = Decimal('0')
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for item in self._iter_order_items():
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total += Decimal(item.quantity)
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return total
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def get_total_diff_quantity(self) -> Decimal:
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total = Decimal('0')
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for item in self._iter_order_items():
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total += Decimal(item.diff_quantity())
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return total
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class OrderDirectionMixin:
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"""提供带方向金额的通用实现，子类只需要覆盖方向。"""
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def get_direction(self) -> int:
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"""
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返回订单方向：
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入库 / 正向金额: 1
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出库 / 负向金额: -1
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"""
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def get_signed_total_amount(self) -> Decimal:
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return self.get_total_amount() * Decimal(self.get_direction())
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class OrderCounterpartyMixin:
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"""
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抽象出“订单关联业务主体”的能力，子类只需指出字段名称，
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即可通过统一接口获取 Supplier / Customer 等对象。
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"""
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counterparty_field_name = ''
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def get_counterparty_field_name(self) -> str:
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"""返回用于存放业务主体的字段名，如 supplier / customer。"""
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def get_counterparty(self) -> basic_info_models.Supplier | basic_info_models.Customer:
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field_name = self.get_counterparty_field_name() or self.counterparty_field_name
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if not field_name:
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raise AttributeError('未定义 counterparty 字段名称')
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try:
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counterparty = getattr(self, field_name)
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except AttributeError as exc:
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raise AttributeError(f'找不到字段 {field_name}') from exc
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if counterparty is None:
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raise ValueError(f'{field_name} 未设置，无法获取业务主体')
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return counterparty
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class PurchaseOrder(OrderItemsAggregationMixin, OrderDirectionMixin, OrderCounterpartyMixin, ModelBase):
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"""采购单模型（业务模块）"""
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id = models.BigAutoField(primary_key=True)
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merchant = models.ForeignKey(
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basic_info_models.Merchant,
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on_delete=models.PROTECT,
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related_name='purchase_orders',
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verbose_name='所属商户',
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)
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supplier = models.ForeignKey(
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basic_info_models.Supplier,
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on_delete=models.PROTECT,
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related_name='purchase_orders',
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verbose_name='供应商',
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)
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purchase_date = models.DateField(verbose_name='采购日期')
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kind = models.IntegerField(
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choices=PurchaseOrderKindEnum.choices,
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default=PurchaseOrderKindEnum.WHOLESALE,
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verbose_name='采购单类型',
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)
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operator = models.ForeignKey(
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basic_info_models.Employee,
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on_delete=models.PROTECT,
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related_name='purchase_orders',
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verbose_name='经办人',
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)
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warehouse = models.ForeignKey(
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basic_info_models.WareHouse,
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on_delete=models.PROTECT,
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related_name='purchase_orders',
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verbose_name='仓库',
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)
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status = models.IntegerField(
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choices=PurchaseOrderStatusEnum.choices,
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default=PurchaseOrderStatusEnum.PENDING,
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verbose_name='状态',
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)
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remarks = models.TextField(blank=True, null=True, verbose_name='备注')
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def __str__(self):
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return f'采购订单 {self.id} - {self.supplier.name}'
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class Meta:
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verbose_name = '采购单'
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verbose_name_plural = '采购单'
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def get_direction(self) -> int:
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return 1
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def get_counterparty_field_name(self) -> str:
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return 'supplier'
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class PurchaseOrderItem(ModelBase):
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"""采购单明细模型"""
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id = models.BigAutoField(primary_key=True)
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purchase_order = models.ForeignKey(
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PurchaseOrder,
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on_delete=models.CASCADE,
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related_name='items',
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verbose_name='采购单',
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)
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product = models.ForeignKey(
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basic_info_models.Product,
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on_delete=models.PROTECT,
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related_name='purchase_order_items',
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verbose_name='产品',
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)
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price = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='单价')
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color = models.CharField(max_length=50, null=True, blank=True, verbose_name='颜色')
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quantity = models.DecimalField(max_digits=10, decimal_places=2, verbose_name='数量')
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unit = models.CharField(max_length=50, verbose_name='单位')
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spec = models.CharField(max_length=100, null=True, blank=True, verbose_name='规格')
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empty_diff_percent = models.DecimalField(
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max_digits=15,
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decimal_places=2,
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verbose_name='空差百分比',
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)
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# if purchase_order.warehouse.mode != WarehouseModeEnum.UNRESTRICTED, then quantity_of_rolls is required
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quantity_of_rolls = models.CharField(
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max_length=255,
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null=True,
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blank=True,
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verbose_name='各条数数量',
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)
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num_of_rolls = models.PositiveIntegerField(default=1, verbose_name='条数')
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batch_number = models.CharField(null=True, blank=True, max_length=100, verbose_name='批次号')
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remarks = models.TextField(blank=True, null=True, verbose_name='备注')
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class Meta:
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verbose_name = '采购单明细'
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verbose_name_plural = '采购单明细'
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def real_quantity(self):
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return round(self.quantity * (1 - self.empty_diff_percent / 100), 2)
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def diff_quantity(self):
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return round(self.quantity * (self.empty_diff_percent / 100), 2)
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def total_amount(self):
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return round(self.price * self.real_quantity(), 2)
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def split_quantity_of_rolls(self) -> List[int]:
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if self.quantity_of_rolls:
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return [int(value) for value in self.quantity_of_rolls.split(',') if value.strip()]
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return []
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class SalesOrderKindEnum(models.IntegerChoices):
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"""销售单类型"""
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WHOLESALE = 1, '大货'
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SAMPLE = 2, '样板'
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class SalesOrderStatusEnum(models.IntegerChoices):
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"""销售单状态"""
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PENDING = 1, '审批中'
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APPROVED = 2, '审批通过'
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CANCELLED = 3, '作废'
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class SalesOrder(OrderItemsAggregationMixin, OrderDirectionMixin, OrderCounterpartyMixin, ModelBase):
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"""销售单模型"""
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id = models.BigAutoField(primary_key=True)
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merchant = models.ForeignKey(
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basic_info_models.Merchant,
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on_delete=models.PROTECT,
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related_name='sales_orders',
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verbose_name='所属商户',
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)
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customer = models.ForeignKey(
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basic_info_models.Customer,
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on_delete=models.PROTECT,
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related_name='sales_orders',
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verbose_name='客户',
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)
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sales_date = models.DateField(verbose_name='销售日期')
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kind = models.IntegerField(
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choices=SalesOrderKindEnum.choices,
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default=SalesOrderKindEnum.WHOLESALE,
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verbose_name='销售单类型',
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)
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operator = models.ForeignKey(
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basic_info_models.Employee,
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on_delete=models.PROTECT,
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related_name='sales_orders',
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verbose_name='经办人',
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)
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warehouse = models.ForeignKey(
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basic_info_models.WareHouse,
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on_delete=models.PROTECT,
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related_name='sales_orders',
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verbose_name='仓库',
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)
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status = models.IntegerField(
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choices=SalesOrderStatusEnum.choices,
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default=SalesOrderStatusEnum.PENDING,
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verbose_name='状态',
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)
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remarks = models.TextField(blank=True, null=True, verbose_name='备注')
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def __str__(self):
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return f'销售订单 {self.id} - {self.customer.name}'
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class Meta:
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verbose_name = '销售单'
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verbose_name_plural = '销售单'
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def get_direction(self) -> int:
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return -1
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def get_counterparty_field_name(self) -> str:
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return 'customer'
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class SalesOrderItem(ModelBase):
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"""销售单明细模型"""
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id = models.BigAutoField(primary_key=True)
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sales_order = models.ForeignKey(
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SalesOrder,
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on_delete=models.CASCADE,
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related_name='items',
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verbose_name='销售单',
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)
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product = models.ForeignKey(
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basic_info_models.Product,
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on_delete=models.PROTECT,
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related_name='sales_order_items',
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verbose_name='产品',
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)
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printing_job = models.ForeignKey(
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'printing.PrintingJob',
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on_delete=models.PROTECT,
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related_name='sales_order_items',
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null=True,
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blank=True,
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verbose_name='关联印染任务',
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)
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price = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='单价')
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color = models.CharField(max_length=50, null=True, blank=True, verbose_name='颜色')
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quantity = models.DecimalField(max_digits=10, decimal_places=2, verbose_name='数量')
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unit = models.CharField(max_length=50, verbose_name='单位')
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spec = models.CharField(max_length=100, null=True, blank=True, verbose_name='规格')
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empty_diff_percent = models.DecimalField(
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max_digits=15,
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decimal_places=2,
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verbose_name='空差百分比',
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)
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quantity_of_rolls = models.TextField(
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null=True,
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blank=True,
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verbose_name='各条数数量',
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)
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num_of_rolls = models.PositiveIntegerField(default=1, verbose_name='条数')
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consume_detail_ids = models.CharField(
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max_length=255,
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null=True,
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blank=True,
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verbose_name='消耗入库明细ID列表',
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)
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batch_number = models.CharField(null=True, blank=True, max_length=100, verbose_name='批次号')
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remarks = models.TextField(blank=True, null=True, verbose_name='备注')
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class Meta:
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verbose_name = '销售单明细'
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verbose_name_plural = '销售单明细'
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def split_quantity_of_rolls(self) -> List[int]:
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if self.quantity_of_rolls:
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return [int(value) for value in self.quantity_of_rolls.split(',') if value.strip()]
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return []
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def real_quantity(self):
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return round(self.quantity * (1 - self.empty_diff_percent / 100), 2)
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def diff_quantity(self):
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return round(self.quantity * (self.empty_diff_percent / 100), 2)
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def total_amount(self):
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return round(self.price * self.real_quantity(), 2)
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class PurchaseReturnStatusEnum(models.IntegerChoices):
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PENDING = 1, '审批中'
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APPROVED = 2, '审批通过'
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CANCELLED = 3, '作废'
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class PurchaseReturnOrder(OrderItemsAggregationMixin, OrderDirectionMixin, OrderCounterpartyMixin, ModelBase):
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"""采购退货单（库存出库 + 供应商应付减少）"""
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id = models.BigAutoField(primary_key=True)
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merchant = models.ForeignKey(
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basic_info_models.Merchant,
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on_delete=models.PROTECT,
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related_name='purchase_return_orders',
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verbose_name='所属商户',
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)
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supplier = models.ForeignKey(
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basic_info_models.Supplier,
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on_delete=models.PROTECT,
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related_name='purchase_return_orders',
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verbose_name='供应商',
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)
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purchase_order = models.ForeignKey(
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'PurchaseOrder',
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on_delete=models.SET_NULL,
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related_name='return_orders',
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null=True,
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blank=True,
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verbose_name='原采购单',
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)
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return_date = models.DateField(verbose_name='退货日期')
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operator = models.ForeignKey(
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basic_info_models.Employee,
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on_delete=models.PROTECT,
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related_name='purchase_return_orders',
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verbose_name='经办人',
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)
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warehouse = models.ForeignKey(
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basic_info_models.WareHouse,
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on_delete=models.PROTECT,
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related_name='purchase_return_orders',
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verbose_name='仓库',
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)
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status = models.IntegerField(
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choices=PurchaseReturnStatusEnum.choices,
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default=PurchaseReturnStatusEnum.PENDING,
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verbose_name='状态',
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)
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remarks = models.TextField(blank=True, null=True, verbose_name='备注')
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class Meta:
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verbose_name = '采购退货单'
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verbose_name_plural = '采购退货单'
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def __str__(self):
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return f'采购退货 {self.id} - {self.supplier.name}'
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def get_direction(self) -> int:
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return -1
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def get_counterparty_field_name(self) -> str:
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return 'supplier'
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class PurchaseReturnOrderItem(ModelBase):
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id = models.BigAutoField(primary_key=True)
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purchase_return_order = models.ForeignKey(
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PurchaseReturnOrder,
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on_delete=models.CASCADE,
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related_name='items',
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verbose_name='采购退货单',
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)
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product = models.ForeignKey(
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basic_info_models.Product,
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on_delete=models.PROTECT,
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related_name='purchase_return_order_items',
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verbose_name='产品',
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)
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price = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='单价')
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color = models.CharField(max_length=50, null=True, blank=True, verbose_name='颜色')
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quantity = models.DecimalField(max_digits=10, decimal_places=2, verbose_name='数量')
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unit = models.CharField(max_length=50, verbose_name='单位')
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spec = models.CharField(max_length=100, null=True, blank=True, verbose_name='规格')
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empty_diff_percent = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='空差百分比')
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quantity_of_rolls = models.CharField(max_length=255, null=True, blank=True, verbose_name='各条数数量')
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num_of_rolls = models.PositiveIntegerField(default=1, verbose_name='条数')
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consume_detail_ids = models.CharField(
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max_length=255,
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null=True,
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blank=True,
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verbose_name='关联入库明细ID',
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)
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batch_number = models.CharField(null=True, blank=True, max_length=100, verbose_name='批次号')
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remarks = models.TextField(blank=True, null=True, verbose_name='备注')
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class Meta:
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verbose_name = '采购退货明细'
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verbose_name_plural = '采购退货明细'
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def split_quantity_of_rolls(self) -> List[int]:
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if self.quantity_of_rolls:
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return [int(value) for value in self.quantity_of_rolls.split(',') if value.strip()]
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return []
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def real_quantity(self):
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return round(self.quantity * (1 - self.empty_diff_percent / 100), 2)
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def diff_quantity(self):
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return round(self.quantity * (self.empty_diff_percent / 100), 2)
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|
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def total_amount(self):
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return round(self.price * self.real_quantity(), 2)
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|
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class SalesReturnStatusEnum(models.IntegerChoices):
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PENDING = 1, '审批中'
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APPROVED = 2, '审批通过'
|
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CANCELLED = 3, '作废'
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|
|
|
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class SalesReturnOrder(OrderItemsAggregationMixin, OrderDirectionMixin, OrderCounterpartyMixin, ModelBase):
|
|
"""销售退货单（库存入库 + 客户应收减少）"""
|
|
|
|
id = models.BigAutoField(primary_key=True)
|
|
merchant = models.ForeignKey(
|
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basic_info_models.Merchant,
|
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on_delete=models.PROTECT,
|
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related_name='sales_return_orders',
|
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verbose_name='所属商户',
|
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)
|
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customer = models.ForeignKey(
|
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basic_info_models.Customer,
|
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on_delete=models.PROTECT,
|
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related_name='sales_return_orders',
|
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verbose_name='客户',
|
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)
|
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sales_order = models.ForeignKey(
|
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'SalesOrder',
|
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on_delete=models.SET_NULL,
|
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related_name='return_orders',
|
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null=True,
|
|
blank=True,
|
|
verbose_name='原销售单',
|
|
)
|
|
return_date = models.DateField(verbose_name='退货日期')
|
|
operator = models.ForeignKey(
|
|
basic_info_models.Employee,
|
|
on_delete=models.PROTECT,
|
|
related_name='sales_return_orders',
|
|
verbose_name='经办人',
|
|
)
|
|
warehouse = models.ForeignKey(
|
|
basic_info_models.WareHouse,
|
|
on_delete=models.PROTECT,
|
|
related_name='sales_return_orders',
|
|
verbose_name='仓库',
|
|
)
|
|
status = models.IntegerField(
|
|
choices=SalesReturnStatusEnum.choices,
|
|
default=SalesReturnStatusEnum.PENDING,
|
|
verbose_name='状态',
|
|
)
|
|
remarks = models.TextField(blank=True, null=True, verbose_name='备注')
|
|
|
|
class Meta:
|
|
verbose_name = '销售退货单'
|
|
verbose_name_plural = '销售退货单'
|
|
|
|
def __str__(self):
|
|
return f'销售退货 {self.id} - {self.customer.name}'
|
|
|
|
def get_direction(self) -> int:
|
|
return 1
|
|
|
|
def get_counterparty_field_name(self) -> str:
|
|
return 'customer'
|
|
|
|
|
|
class SalesReturnOrderItem(ModelBase):
|
|
id = models.BigAutoField(primary_key=True)
|
|
sales_return_order = models.ForeignKey(
|
|
SalesReturnOrder,
|
|
on_delete=models.CASCADE,
|
|
related_name='items',
|
|
verbose_name='销售退货单',
|
|
)
|
|
product = models.ForeignKey(
|
|
basic_info_models.Product,
|
|
on_delete=models.PROTECT,
|
|
related_name='sales_return_order_items',
|
|
verbose_name='产品',
|
|
)
|
|
price = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='单价')
|
|
color = models.CharField(max_length=50, null=True, blank=True, verbose_name='颜色')
|
|
quantity = models.DecimalField(max_digits=10, decimal_places=2, verbose_name='数量')
|
|
unit = models.CharField(max_length=50, verbose_name='单位')
|
|
spec = models.CharField(max_length=100, null=True, blank=True, verbose_name='规格')
|
|
empty_diff_percent = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='空差百分比')
|
|
quantity_of_rolls = models.CharField(max_length=255, null=True, blank=True, verbose_name='各条数数量')
|
|
num_of_rolls = models.PositiveIntegerField(default=1, verbose_name='条数')
|
|
consume_detail_ids = models.CharField(
|
|
max_length=255,
|
|
null=True,
|
|
blank=True,
|
|
verbose_name='关联入库明细ID',
|
|
)
|
|
batch_number = models.CharField(null=True, blank=True, max_length=100, verbose_name='批次号')
|
|
remarks = models.TextField(blank=True, null=True, verbose_name='备注')
|
|
|
|
class Meta:
|
|
verbose_name = '销售退货明细'
|
|
verbose_name_plural = '销售退货明细'
|
|
|
|
def real_quantity(self):
|
|
return round(self.quantity * (1 - self.empty_diff_percent / 100), 2)
|
|
|
|
def diff_quantity(self):
|
|
return round(self.quantity * (self.empty_diff_percent / 100), 2)
|
|
|
|
def total_amount(self):
|
|
return round(self.price * self.real_quantity(), 2)
|
|
|
|
def split_quantity_of_rolls(self) -> List[int]:
|
|
if self.quantity_of_rolls:
|
|
return [int(value) for value in self.quantity_of_rolls.split(',') if value.strip()]
|
|
return []
|
|
|
|
|
|
class PaymentOrderStatusEnum(models.IntegerChoices):
|
|
PENDING = 1, '审批中'
|
|
APPROVED = 2, '审批通过'
|
|
CANCELLED = 3, '作废'
|
|
|
|
|
|
class PaymentOrder(OrderDirectionMixin, OrderCounterpartyMixin, ModelBase):
|
|
id = models.BigAutoField(primary_key=True)
|
|
merchant = models.ForeignKey(
|
|
basic_info_models.Merchant,
|
|
on_delete=models.PROTECT,
|
|
related_name='payment_orders',
|
|
verbose_name='所属商户',
|
|
)
|
|
supplier = models.ForeignKey(
|
|
basic_info_models.Supplier,
|
|
on_delete=models.PROTECT,
|
|
related_name='payment_orders',
|
|
verbose_name='供应商',
|
|
)
|
|
payment_date = models.DateField(verbose_name='付款日期')
|
|
amount = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='金额')
|
|
discount_amount = models.DecimalField(
|
|
max_digits=15,
|
|
decimal_places=2,
|
|
default=Decimal('0'),
|
|
verbose_name='折扣金额',
|
|
)
|
|
bank_account = models.ForeignKey(
|
|
basic_info_models.BankAccount,
|
|
on_delete=models.PROTECT,
|
|
related_name='payment_orders',
|
|
verbose_name='银行账户',
|
|
blank=True,
|
|
null=True,
|
|
)
|
|
markup = models.CharField(max_length=255, blank=True, null=True, verbose_name='附言')
|
|
operator = models.ForeignKey(
|
|
basic_info_models.Employee,
|
|
on_delete=models.PROTECT,
|
|
related_name='payment_orders',
|
|
verbose_name='经办人',
|
|
)
|
|
status = models.IntegerField(
|
|
choices=PaymentOrderStatusEnum.choices,
|
|
default=PaymentOrderStatusEnum.PENDING,
|
|
verbose_name='状态',
|
|
)
|
|
remarks = models.TextField(blank=True, null=True, verbose_name='备注')
|
|
|
|
class Meta:
|
|
verbose_name = '付款单'
|
|
verbose_name_plural = '付款单'
|
|
|
|
def __str__(self):
|
|
return f'付款单 {self.id} - {self.supplier.name}'
|
|
|
|
@property
|
|
def settlement_amount(self) -> Decimal:
|
|
discount = self.discount_amount or Decimal('0')
|
|
return self.amount + discount
|
|
|
|
def get_total_amount(self) -> Decimal:
|
|
return self.settlement_amount
|
|
|
|
def get_direction(self) -> int:
|
|
return -1
|
|
|
|
def get_counterparty_field_name(self) -> str:
|
|
return 'supplier'
|
|
|
|
|
|
class ReceiptOrderStatusEnum(models.IntegerChoices):
|
|
PENDING = 1, '审批中'
|
|
APPROVED = 2, '审批通过'
|
|
CANCELLED = 3, '作废'
|
|
|
|
|
|
class ReceiptOrder(OrderDirectionMixin, OrderCounterpartyMixin, ModelBase):
|
|
id = models.BigAutoField(primary_key=True)
|
|
merchant = models.ForeignKey(
|
|
basic_info_models.Merchant,
|
|
on_delete=models.PROTECT,
|
|
related_name='receipt_orders',
|
|
verbose_name='所属商户',
|
|
)
|
|
customer = models.ForeignKey(
|
|
basic_info_models.Customer,
|
|
on_delete=models.PROTECT,
|
|
related_name='receipt_orders',
|
|
verbose_name='客户',
|
|
)
|
|
receipt_date = models.DateField(verbose_name='收款日期')
|
|
amount = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='金额')
|
|
discount_amount = models.DecimalField(
|
|
max_digits=15,
|
|
decimal_places=2,
|
|
default=Decimal('0'),
|
|
verbose_name='折扣金额',
|
|
)
|
|
bank_account = models.ForeignKey(
|
|
basic_info_models.BankAccount,
|
|
on_delete=models.PROTECT,
|
|
related_name='receipt_orders',
|
|
verbose_name='银行账户',
|
|
blank=True,
|
|
null=True,
|
|
)
|
|
markup = models.CharField(max_length=255, blank=True, null=True, verbose_name='附言')
|
|
operator = models.ForeignKey(
|
|
basic_info_models.Employee,
|
|
on_delete=models.PROTECT,
|
|
related_name='receipt_orders',
|
|
verbose_name='经办人',
|
|
)
|
|
status = models.IntegerField(
|
|
choices=ReceiptOrderStatusEnum.choices,
|
|
default=ReceiptOrderStatusEnum.PENDING,
|
|
verbose_name='状态',
|
|
)
|
|
remarks = models.TextField(blank=True, null=True, verbose_name='备注')
|
|
|
|
class Meta:
|
|
verbose_name = '收款单'
|
|
verbose_name_plural = '收款单'
|
|
|
|
def __str__(self):
|
|
return f'收款单 {self.id} - {self.customer.name}'
|
|
|
|
@property
|
|
def settlement_amount(self) -> Decimal:
|
|
discount = self.discount_amount or Decimal('0')
|
|
return self.amount + discount
|
|
|
|
def get_total_amount(self) -> Decimal:
|
|
return self.settlement_amount
|
|
|
|
def get_direction(self) -> int:
|
|
return -1
|
|
|
|
def get_counterparty_field_name(self) -> str:
|
|
return 'customer'
|
|
|
|
|
|
class SupplierBalance(ModelBase):
|
|
merchant = models.ForeignKey(
|
|
basic_info_models.Merchant,
|
|
on_delete=models.PROTECT,
|
|
related_name='supplier_balances',
|
|
verbose_name='所属商户',
|
|
)
|
|
supplier = models.ForeignKey(
|
|
basic_info_models.Supplier,
|
|
on_delete=models.PROTECT,
|
|
related_name='balances',
|
|
verbose_name='供应商',
|
|
)
|
|
balance = models.DecimalField(max_digits=15, decimal_places=2, default=Decimal('0'), verbose_name='应付余额')
|
|
|
|
class Meta:
|
|
verbose_name = '供应商余额'
|
|
verbose_name_plural = '供应商余额'
|
|
unique_together = ('merchant', 'supplier')
|
|
|
|
|
|
class CustomerBalance(ModelBase):
|
|
merchant = models.ForeignKey(
|
|
basic_info_models.Merchant,
|
|
on_delete=models.PROTECT,
|
|
related_name='customer_balances',
|
|
verbose_name='所属商户',
|
|
)
|
|
customer = models.ForeignKey(
|
|
basic_info_models.Customer,
|
|
on_delete=models.PROTECT,
|
|
related_name='balances',
|
|
verbose_name='客户',
|
|
)
|
|
balance = models.DecimalField(max_digits=15, decimal_places=2, default=Decimal('0'), verbose_name='应收余额')
|
|
|
|
class Meta:
|
|
verbose_name = '客户余额'
|
|
verbose_name_plural = '客户余额'
|
|
unique_together = ('merchant', 'customer')
|
|
|
|
|
|
class BalanceChangeTargetEnum(models.IntegerChoices):
|
|
SUPPLIER = 1, '供应商'
|
|
CUSTOMER = 2, '客户'
|
|
|
|
|
|
class BalanceChangeSourceEnum(models.IntegerChoices):
|
|
PURCHASE_ORDER = 1, '采购单'
|
|
SALES_ORDER = 2, '销售单'
|
|
PAYMENT_ORDER = 3, '付款单'
|
|
RECEIPT_ORDER = 4, '收款单'
|
|
PURCHASE_RETURN_ORDER = 5, '采购退货单'
|
|
SALES_RETURN_ORDER = 6, '销售退货单'
|
|
|
|
|
|
class BalanceChangeDirectionEnum(models.IntegerChoices):
|
|
INCREASE = 1, '增加'
|
|
DECREASE = 2, '减少'
|
|
|
|
|
|
class BalanceChangeRecord(ModelBase):
|
|
merchant = models.ForeignKey(
|
|
basic_info_models.Merchant,
|
|
on_delete=models.PROTECT,
|
|
related_name='balance_change_records',
|
|
verbose_name='所属商户',
|
|
)
|
|
supplier = models.ForeignKey(
|
|
basic_info_models.Supplier,
|
|
on_delete=models.PROTECT,
|
|
related_name='balance_change_records',
|
|
verbose_name='供应商',
|
|
null=True,
|
|
blank=True,
|
|
)
|
|
customer = models.ForeignKey(
|
|
basic_info_models.Customer,
|
|
on_delete=models.PROTECT,
|
|
related_name='balance_change_records',
|
|
verbose_name='客户',
|
|
null=True,
|
|
blank=True,
|
|
)
|
|
target_type = models.IntegerField(
|
|
choices=BalanceChangeTargetEnum.choices,
|
|
verbose_name='业务主体类型',
|
|
)
|
|
source_type = models.IntegerField(
|
|
choices=BalanceChangeSourceEnum.choices,
|
|
verbose_name='来源业务类型',
|
|
)
|
|
source_id = models.BigIntegerField(verbose_name='来源业务ID')
|
|
delta = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='变动金额')
|
|
direction = models.IntegerField(
|
|
choices=BalanceChangeDirectionEnum.choices,
|
|
verbose_name='方向',
|
|
)
|
|
balance_before = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='变动前余额')
|
|
balance_after = models.DecimalField(max_digits=15, decimal_places=2, verbose_name='变动后余额')
|
|
request_id = models.CharField(max_length=64, null=True, blank=True, verbose_name='幂等请求ID')
|
|
remarks = models.TextField(blank=True, null=True, verbose_name='备注')
|
|
extra_meta = models.JSONField(default=dict, blank=True, verbose_name='扩展信息')
|
|
offset_to = models.BigIntegerField(null=True, blank=True, verbose_name='冲抵目标ID')
|
|
offset_at = models.DateTimeField(null=True, blank=True, verbose_name='冲抵时间')
|
|
offset_id = models.BigIntegerField(null=True, blank=True, verbose_name='冲抵来源ID')
|
|
cancelled = models.BooleanField(default=False, verbose_name='已被冲抵')
|
|
cancelled_at = models.DateTimeField(null=True, blank=True, verbose_name='被冲抵时间')
|
|
|
|
class Meta:
|
|
verbose_name = '余额变动记录'
|
|
verbose_name_plural = '余额变动记录'
|
|
indexes = [
|
|
models.Index(fields=['merchant', 'source_type', 'source_id'], name='balance_change_source_idx'),
|
|
]
|
|
constraints = [
|
|
models.CheckConstraint(
|
|
check=(
|
|
(models.Q(supplier__isnull=False, customer__isnull=True))
|
|
| (models.Q(supplier__isnull=True, customer__isnull=False))
|
|
),
|
|
name='balance_change_single_counterparty',
|
|
),
|
|
]
|
|
|
|
def __str__(self):
|
|
counterparty = self.supplier or self.customer
|
|
return f'余额变动 {self.id} - {counterparty}'
|