Docs: начальная структура проекта

Co-authored-by: Cursor <cursoragent@cursor.com>

app/documents/models.py

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+
+"""Документы ERP WaterSurf."""
+from decimal import Decimal
+from django.db import models
+from references.models import Currency, OrderKind, Client, Organization, Supplier, Employee, CashAccount, Product
+
+class CustomerOrder(models.Model):
+    date = models.DateField("Дата")
+    number = models.CharField("Номер", max_length=50)
+    order_kind = models.ForeignKey(OrderKind, on_delete=models.PROTECT, verbose_name="Вид заказа")
+    organization = models.ForeignKey(Organization, on_delete=models.PROTECT, verbose_name="Организация")
+    client = models.ForeignKey(Client, on_delete=models.PROTECT, verbose_name="Клиент")
+    total_amount = models.DecimalField("Стоимость заказа", max_digits=18, decimal_places=2, default=Decimal("0"), editable=False)
+    author = models.ForeignKey(Employee, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Автор", related_name="customer_orders")
+    class Meta:
+        verbose_name = "Заказ клиента"
+        verbose_name_plural = "Заказы клиентов"
+    def __str__(self): return f"{self.number} от {self.date}"
+    def recalc_total(self): self.total_amount = sum((i.price * i.quantity for i in self.items.all()), Decimal("0"))
+
+class CustomerOrderItem(models.Model):
+    document = models.ForeignKey(CustomerOrder, on_delete=models.CASCADE, related_name="items", verbose_name="Заказ")
+    product = models.ForeignKey(Product, on_delete=models.PROTECT, verbose_name="Товар")
+    price = models.DecimalField("Цена", max_digits=18, decimal_places=2, default=Decimal("0"))
+    currency = models.ForeignKey(Currency, on_delete=models.PROTECT, verbose_name="Валюта", null=True, blank=True)
+    quantity = models.DecimalField("Количество", max_digits=18, decimal_places=4, default=Decimal("1"))
+    amount = models.DecimalField("Стоимость", max_digits=18, decimal_places=2, default=Decimal("0"), editable=False)
+    class Meta:
+        verbose_name = "Строка заказа клиента"
+        verbose_name_plural = "Строки заказа клиента"
+    def save(self, *args, **kwargs):
+        self.amount = self.price * self.quantity
+        super().save(*args, **kwargs)
+
+
+class SupplierOrder(models.Model):
+    date = models.DateField("Дата")
+    number = models.CharField("Номер", max_length=50)
+    organization = models.ForeignKey(Organization, on_delete=models.PROTECT, verbose_name="Организация")
+    supplier = models.ForeignKey(Supplier, on_delete=models.PROTECT, verbose_name="Поставщик")
+    currency = models.ForeignKey(Currency, on_delete=models.PROTECT, verbose_name="Валюта")
+    rate = models.DecimalField("Курс валюты", max_digits=18, decimal_places=6, default=Decimal("1"))
+    total_in_currency = models.DecimalField("Стоимость в валюте", max_digits=18, decimal_places=2, default=Decimal("0"), editable=False)
+    total_amount = models.DecimalField("Стоимость заказа", max_digits=18, decimal_places=2, default=Decimal("0"), editable=False)
+    author = models.ForeignKey(Employee, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Автор", related_name="supplier_orders")
+    class Meta:
+        verbose_name = "Заказ поставщику"
+        verbose_name_plural = "Заказы поставщику"
+    def __str__(self): return f"{self.number} от {self.date}"
+    def recalc_totals(self):
+        self.total_in_currency = sum((i.price * i.quantity for i in self.items.all()), Decimal("0"))
+        self.total_amount = self.total_in_currency * self.rate
+
+class SupplierOrderItem(models.Model):
+    document = models.ForeignKey(SupplierOrder, on_delete=models.CASCADE, related_name="items", verbose_name="Заказ поставщику")
+    product = models.ForeignKey(Product, on_delete=models.PROTECT, verbose_name="Товар")
+    price = models.DecimalField("Цена", max_digits=18, decimal_places=2, default=Decimal("0"))
+    currency = models.ForeignKey(Currency, on_delete=models.PROTECT, verbose_name="Валюта", null=True, blank=True)
+    quantity = models.DecimalField("Количество", max_digits=18, decimal_places=4, default=Decimal("1"))
+    amount = models.DecimalField("Стоимость", max_digits=18, decimal_places=2, default=Decimal("0"), editable=False)
+    class Meta:
+        verbose_name = "Строка заказа поставщику"
+        verbose_name_plural = "Строки заказа поставщику"
+    def save(self, *args, **kwargs):
+        self.amount = self.price * self.quantity
+        super().save(*args, **kwargs)
+
+class CashInflow(models.Model):
+    date = models.DateField("Дата")
+    number = models.CharField("Номер", max_length=50)
+    recipient = models.ForeignKey(CashAccount, on_delete=models.PROTECT, verbose_name="Получатель", related_name="inflows")
+    amount = models.DecimalField("Сумма", max_digits=18, decimal_places=2, default=Decimal("0"))
+    customer_order = models.ForeignKey(CustomerOrder, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Заказ клиента", related_name="cash_inflows")
+    comment = models.CharField("Комментарий", max_length=500, blank=True)
+    author = models.ForeignKey(Employee, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Автор", related_name="cash_inflows")
+    class Meta:
+        verbose_name = "Поступление денежных средств"
+        verbose_name_plural = "Поступления денежных средств"
+    def __str__(self): return f"{self.number} от {self.date}"
+
+class CashTransfer(models.Model):
+    date = models.DateField("Дата")
+    number = models.CharField("Номер", max_length=50)
+    sender = models.ForeignKey(CashAccount, on_delete=models.PROTECT, verbose_name="Отправитель", related_name="transfers_sent")
+    recipient = models.ForeignKey(CashAccount, on_delete=models.PROTECT, verbose_name="Получатель", related_name="transfers_received")
+    amount = models.DecimalField("Сумма", max_digits=18, decimal_places=2, default=Decimal("0"))
+    comment = models.CharField("Комментарий", max_length=500, blank=True)
+    author = models.ForeignKey(Employee, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Автор", related_name="cash_transfers")
+    class Meta:
+        verbose_name = "Перемещение денежных средств"
+        verbose_name_plural = "Перемещения денежных средств"
+    def __str__(self): return f"{self.number} от {self.date}"
+
+class CashExpense(models.Model):
+    date = models.DateField("Дата")
+    number = models.CharField("Номер", max_length=50)
+    sender = models.ForeignKey(CashAccount, on_delete=models.PROTECT, verbose_name="Отправитель", related_name="expenses")
+    amount = models.DecimalField("Сумма", max_digits=18, decimal_places=2, default=Decimal("0"))
+    supplier_order = models.ForeignKey(SupplierOrder, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Заказ поставщику", related_name="cash_expenses")
+    comment = models.CharField("Комментарий", max_length=500, blank=True)
+    author = models.ForeignKey(Employee, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Автор", related_name="cash_expenses")
+    class Meta:
+        verbose_name = "Расход денежных средств"
+        verbose_name_plural = "Расходы денежных средств"
+    def __str__(self): return f"{self.number} от {self.date}"