149 lines
9.7 KiB
Python
149 lines
9.7 KiB
Python
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"""Документы ERP WaterSurf."""
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from decimal import Decimal
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from django.db import models
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from django.db.models import Sum
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from django.core.validators import MinValueValidator, MaxValueValidator
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from references.models import Currency, OrderKind, Client, Organization, Supplier, Employee, CashAccount, Product, OrderStatus
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class CustomerOrder(models.Model):
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date = models.DateField("Дата")
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number = models.CharField("Номер", max_length=50)
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order_kind = models.ForeignKey(OrderKind, on_delete=models.PROTECT, verbose_name="Вид заказа")
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organization = models.ForeignKey(Organization, on_delete=models.PROTECT, verbose_name="Организация")
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client = models.ForeignKey(Client, on_delete=models.PROTECT, verbose_name="Клиент")
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status = models.ForeignKey(
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OrderStatus,
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on_delete=models.PROTECT,
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verbose_name="Статус заказа",
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null=True,
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blank=True,
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related_name="customer_orders",
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)
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total_amount = models.DecimalField("Стоимость заказа", max_digits=18, decimal_places=2, default=Decimal("0"), editable=False)
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author = models.ForeignKey(Employee, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Автор", related_name="customer_orders")
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class Meta:
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verbose_name = "Заказ клиента"
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verbose_name_plural = "Заказы клиентов"
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def __str__(self): return f"{self.number} от {self.date}"
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def recalc_total(self): self.total_amount = sum((i.price * i.quantity for i in self.items.all()), Decimal("0"))
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def get_economics(self):
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"""Сводка по поступлениям и расходам по заказу: поступления, расходы (через заказы поставщику + прямые), маржа, маржинальность, рентабельность."""
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total_inflows = self.cash_inflows.aggregate(s=Sum("amount"))["s"] or Decimal("0")
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expenses_via_supplier = CashExpense.objects.filter(supplier_order__customer_order=self).aggregate(s=Sum("amount"))["s"] or Decimal("0")
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expenses_direct = self.cash_expenses.aggregate(s=Sum("amount"))["s"] or Decimal("0")
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total_expenses = expenses_via_supplier + expenses_direct
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margin = total_inflows - total_expenses
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margin_pct = (margin / total_inflows * 100) if total_inflows else None
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profitability_pct = (margin / total_expenses * 100) if total_expenses else None
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return {
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"total_inflows": total_inflows,
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"expenses_via_supplier": expenses_via_supplier,
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"expenses_direct": expenses_direct,
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"total_expenses": total_expenses,
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"margin": margin,
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"margin_pct": margin_pct,
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"profitability_pct": profitability_pct,
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}
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class CustomerOrderItem(models.Model):
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document = models.ForeignKey(CustomerOrder, on_delete=models.CASCADE, related_name="items", verbose_name="Заказ")
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product = models.ForeignKey(Product, on_delete=models.PROTECT, verbose_name="Товар")
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price = models.DecimalField("Цена", max_digits=18, decimal_places=2, default=Decimal("0"))
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currency = models.ForeignKey(Currency, on_delete=models.PROTECT, verbose_name="Валюта", null=True, blank=True)
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quantity = models.DecimalField(
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"Количество",
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max_digits=18,
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decimal_places=0,
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default=Decimal("1"),
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validators=[MinValueValidator(0), MaxValueValidator(99)],
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)
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amount = models.DecimalField("Стоимость", max_digits=18, decimal_places=2, default=Decimal("0"), editable=False)
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class Meta:
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verbose_name = "Строка заказа клиента"
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verbose_name_plural = "Строки заказа клиента"
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def save(self, *args, **kwargs):
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self.amount = self.price * self.quantity
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super().save(*args, **kwargs)
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class SupplierOrder(models.Model):
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date = models.DateField("Дата")
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number = models.CharField("Номер", max_length=50)
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organization = models.ForeignKey(Organization, on_delete=models.PROTECT, verbose_name="Организация")
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supplier = models.ForeignKey(Supplier, on_delete=models.PROTECT, verbose_name="Поставщик")
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customer_order = models.ForeignKey(CustomerOrder, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Заказ клиента", related_name="supplier_orders")
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currency = models.ForeignKey(Currency, on_delete=models.PROTECT, verbose_name="Валюта")
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rate = models.DecimalField("Курс валюты", max_digits=18, decimal_places=6, default=Decimal("1"))
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total_in_currency = models.DecimalField("Стоимость в валюте", max_digits=18, decimal_places=2, default=Decimal("0"), editable=False)
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total_amount = models.DecimalField("Стоимость заказа", max_digits=18, decimal_places=2, default=Decimal("0"), editable=False)
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author = models.ForeignKey(Employee, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Автор", related_name="supplier_orders")
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class Meta:
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verbose_name = "Заказ поставщику"
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verbose_name_plural = "Заказы поставщику"
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def __str__(self): return f"{self.number} от {self.date}"
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def recalc_totals(self):
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self.total_in_currency = sum((i.price * i.quantity for i in self.items.all()), Decimal("0"))
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self.total_amount = self.total_in_currency * self.rate
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class SupplierOrderItem(models.Model):
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document = models.ForeignKey(SupplierOrder, on_delete=models.CASCADE, related_name="items", verbose_name="Заказ поставщику")
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product = models.ForeignKey(Product, on_delete=models.PROTECT, verbose_name="Товар")
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price = models.DecimalField("Цена", max_digits=18, decimal_places=2, default=Decimal("0"))
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currency = models.ForeignKey(Currency, on_delete=models.PROTECT, verbose_name="Валюта", null=True, blank=True)
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quantity = models.DecimalField(
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"Количество",
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max_digits=18,
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decimal_places=0,
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default=Decimal("1"),
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validators=[MinValueValidator(0), MaxValueValidator(99)],
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)
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amount = models.DecimalField("Стоимость", max_digits=18, decimal_places=2, default=Decimal("0"), editable=False)
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class Meta:
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verbose_name = "Строка заказа поставщику"
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verbose_name_plural = "Строки заказа поставщику"
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def save(self, *args, **kwargs):
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self.amount = self.price * self.quantity
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super().save(*args, **kwargs)
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class CashInflow(models.Model):
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date = models.DateField("Дата")
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number = models.CharField("Номер", max_length=50)
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recipient = models.ForeignKey(CashAccount, on_delete=models.PROTECT, verbose_name="Получатель", related_name="inflows")
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amount = models.DecimalField("Сумма", max_digits=18, decimal_places=2, default=Decimal("0"))
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customer_order = models.ForeignKey(CustomerOrder, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Заказ клиента", related_name="cash_inflows")
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comment = models.CharField("Комментарий", max_length=500, blank=True)
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author = models.ForeignKey(Employee, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Автор", related_name="cash_inflows")
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class Meta:
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verbose_name = "Поступление денежных средств"
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verbose_name_plural = "Поступления денежных средств"
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def __str__(self): return f"{self.number} от {self.date}"
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class CashTransfer(models.Model):
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date = models.DateField("Дата")
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number = models.CharField("Номер", max_length=50)
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sender = models.ForeignKey(CashAccount, on_delete=models.PROTECT, verbose_name="Отправитель", related_name="transfers_sent")
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recipient = models.ForeignKey(CashAccount, on_delete=models.PROTECT, verbose_name="Получатель", related_name="transfers_received")
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amount = models.DecimalField("Сумма", max_digits=18, decimal_places=2, default=Decimal("0"))
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comment = models.CharField("Комментарий", max_length=500, blank=True)
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author = models.ForeignKey(Employee, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Автор", related_name="cash_transfers")
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class Meta:
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verbose_name = "Перемещение денежных средств"
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verbose_name_plural = "Перемещения денежных средств"
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def __str__(self): return f"{self.number} от {self.date}"
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class CashExpense(models.Model):
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date = models.DateField("Дата")
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number = models.CharField("Номер", max_length=50)
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sender = models.ForeignKey(CashAccount, on_delete=models.PROTECT, verbose_name="Отправитель", related_name="expenses")
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amount = models.DecimalField("Сумма", max_digits=18, decimal_places=2, default=Decimal("0"))
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supplier_order = models.ForeignKey(SupplierOrder, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Заказ поставщику", related_name="cash_expenses")
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customer_order = models.ForeignKey(CustomerOrder, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Заказ клиента", related_name="cash_expenses")
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comment = models.CharField("Комментарий", max_length=500, blank=True)
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author = models.ForeignKey(Employee, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Автор", related_name="cash_expenses")
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class Meta:
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verbose_name = "Расход денежных средств"
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verbose_name_plural = "Расходы денежных средств"
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def __str__(self): return f"{self.number} от {self.date}"
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