955 lines
33 KiB
Python
955 lines
33 KiB
Python
# backend/procurement/models.py
|
||
"""
|
||
Модели для модуля закупок и инвентаря.
|
||
|
||
Основные сущности:
|
||
- ProcurementRequest: заявка на закупку
|
||
- ProcurementItem: позиция в заявке
|
||
- Approval: запись о согласовании
|
||
- Equipment: единица оборудования/инвентаря
|
||
- EquipmentCategory: категория оборудования
|
||
- MaintenanceRecord: запись об обслуживании
|
||
- Budget: бюджет отдела
|
||
- Supplier: поставщик
|
||
"""
|
||
|
||
from decimal import Decimal
|
||
|
||
from django.contrib.auth import get_user_model
|
||
from django.core.exceptions import ValidationError
|
||
from django.core.validators import MinValueValidator
|
||
from django.db import models
|
||
from django.db.models import Sum
|
||
from django.db.models.functions import Coalesce
|
||
from django.utils import timezone
|
||
from employees.models import Department
|
||
|
||
from .constants import (
|
||
ApprovalStatus,
|
||
EquipmentStatus,
|
||
MaintenanceType,
|
||
ProcurementFulfillmentStatus,
|
||
ProcurementItemExecutionStatus,
|
||
ProcurementStatus,
|
||
UrgencyLevel,
|
||
get_default_approval_step_name,
|
||
)
|
||
|
||
User = get_user_model()
|
||
|
||
|
||
class ProcurementRequest(models.Model):
|
||
"""Заявка на закупку.
|
||
|
||
Статусы: DRAFT → PENDING → APPROVED → IN_PROGRESS → COMPLETED
|
||
Альтернативные переходы: → REJECTED, → CANCELLED
|
||
"""
|
||
|
||
title = models.CharField(
|
||
"Название", max_length=255, help_text="Краткое название заявки"
|
||
)
|
||
description = models.TextField(
|
||
"Описание",
|
||
help_text="Подробное описание и обоснование необходимости закупки",
|
||
)
|
||
department = models.ForeignKey(
|
||
Department,
|
||
on_delete=models.PROTECT,
|
||
related_name="procurement_requests",
|
||
verbose_name="Отдел",
|
||
)
|
||
processing_department = models.ForeignKey(
|
||
Department,
|
||
on_delete=models.PROTECT,
|
||
null=True,
|
||
blank=True,
|
||
related_name="processing_procurement_requests",
|
||
verbose_name="Отдел-исполнитель",
|
||
help_text="Отдел, который должен обработать заявку",
|
||
)
|
||
requestor = models.ForeignKey(
|
||
User,
|
||
on_delete=models.PROTECT,
|
||
related_name="procurement_requests",
|
||
verbose_name="Заявитель",
|
||
)
|
||
executor = models.ForeignKey(
|
||
User,
|
||
on_delete=models.SET_NULL,
|
||
null=True,
|
||
blank=True,
|
||
related_name="executing_procurements",
|
||
verbose_name="Исполнитель",
|
||
help_text="Кто взял заявку в работу",
|
||
)
|
||
status = models.CharField(
|
||
"Статус",
|
||
max_length=20,
|
||
choices=ProcurementStatus.choices,
|
||
default=ProcurementStatus.DRAFT,
|
||
)
|
||
urgency = models.CharField(
|
||
"Срочность",
|
||
max_length=20,
|
||
choices=UrgencyLevel.choices,
|
||
default=UrgencyLevel.MEDIUM,
|
||
)
|
||
fulfillment_status = models.CharField(
|
||
"Статус исполнения",
|
||
max_length=30,
|
||
choices=ProcurementFulfillmentStatus.choices,
|
||
default=ProcurementFulfillmentStatus.PENDING,
|
||
)
|
||
actual_cost = models.DecimalField(
|
||
"Фактическая стоимость",
|
||
max_digits=12,
|
||
decimal_places=2,
|
||
null=True,
|
||
blank=True,
|
||
validators=[MinValueValidator(Decimal("0.01"))],
|
||
)
|
||
|
||
# Даты
|
||
created_at = models.DateTimeField("Создано", auto_now_add=True)
|
||
updated_at = models.DateTimeField("Обновлено", auto_now=True)
|
||
submitted_at = models.DateTimeField(
|
||
"Отправлено на согласование", null=True, blank=True
|
||
)
|
||
started_at = models.DateTimeField("Взято в работу", null=True, blank=True)
|
||
completed_at = models.DateTimeField("Завершено", null=True, blank=True)
|
||
|
||
class Meta:
|
||
verbose_name = "Заявка на закупку"
|
||
verbose_name_plural = "Заявки на закупку"
|
||
ordering = ["-created_at"]
|
||
permissions = [
|
||
("approve_procurementrequest", "Can approve procurement requests"),
|
||
("view_all_requests", "Can view all department requests"),
|
||
("execute_procurement", "Can execute approved requests"),
|
||
]
|
||
|
||
def __str__(self):
|
||
return f"#{self.pk} {self.title}"
|
||
|
||
def get_required_approval_priorities(self):
|
||
"""Возвращает приоритеты обязательных этапов из таблицы маршрутов."""
|
||
return list(
|
||
self.get_required_approval_routes().values_list(
|
||
"priority", flat=True
|
||
)
|
||
)
|
||
|
||
def get_required_approval_routes(self):
|
||
"""Возвращает queryset обязательных этапов из таблицы маршрутов."""
|
||
return ApprovalRoute.get_applicable_routes(self.total_cost)
|
||
|
||
@property
|
||
def total_cost(self):
|
||
"""Общая стоимость заявки (сумма всех позиций)."""
|
||
total = self.items.aggregate(
|
||
total=Sum(
|
||
Coalesce(
|
||
models.F("estimated_unit_price"),
|
||
Decimal("0.00"),
|
||
output_field=models.DecimalField(),
|
||
) * models.F("quantity"),
|
||
output_field=models.DecimalField(),
|
||
)
|
||
)["total"]
|
||
return total or Decimal("0.00")
|
||
|
||
@property
|
||
def items_count(self):
|
||
"""Количество позиций в заявке."""
|
||
return self.items.count()
|
||
|
||
@property
|
||
def is_editable(self):
|
||
"""Можно ли редактировать заявку."""
|
||
return self.status in [
|
||
ProcurementStatus.DRAFT,
|
||
ProcurementStatus.WAITING,
|
||
] and self.executor_id is None
|
||
|
||
def recalculate_fulfillment_status(self, save=True):
|
||
"""Пересчитать рабочий статус заявки по статусам позиций."""
|
||
item_statuses = list(
|
||
self.items.values_list("execution_status", flat=True)
|
||
)
|
||
if not item_statuses:
|
||
new_status = ProcurementFulfillmentStatus.PENDING
|
||
elif any(
|
||
item_status
|
||
in {
|
||
ProcurementItemExecutionStatus.REJECTED,
|
||
ProcurementItemExecutionStatus.COMPLETED_WITH_ISSUE,
|
||
ProcurementItemExecutionStatus.EDITED,
|
||
ProcurementItemExecutionStatus.DEFECTIVE,
|
||
}
|
||
for item_status in item_statuses
|
||
):
|
||
new_status = ProcurementFulfillmentStatus.ISSUES
|
||
elif all(
|
||
item_status == ProcurementItemExecutionStatus.RECEIVED
|
||
for item_status in item_statuses
|
||
):
|
||
new_status = ProcurementFulfillmentStatus.COMPLETED
|
||
elif any(
|
||
item_status == ProcurementItemExecutionStatus.RECEIVED
|
||
for item_status in item_statuses
|
||
):
|
||
new_status = ProcurementFulfillmentStatus.PARTIALLY_RECEIVED
|
||
elif all(
|
||
item_status == ProcurementItemExecutionStatus.ORDERED
|
||
for item_status in item_statuses
|
||
):
|
||
new_status = ProcurementFulfillmentStatus.ORDERED
|
||
elif any(
|
||
item_status == ProcurementItemExecutionStatus.ORDERED
|
||
for item_status in item_statuses
|
||
):
|
||
new_status = ProcurementFulfillmentStatus.PARTIALLY_ORDERED
|
||
else:
|
||
new_status = ProcurementFulfillmentStatus.PENDING
|
||
|
||
should_close = (
|
||
new_status == ProcurementFulfillmentStatus.COMPLETED
|
||
and self.status in [
|
||
ProcurementStatus.WAITING,
|
||
ProcurementStatus.IN_PROGRESS,
|
||
]
|
||
)
|
||
|
||
if self.fulfillment_status == new_status and not should_close:
|
||
return new_status
|
||
|
||
self.fulfillment_status = new_status
|
||
update_fields = ["fulfillment_status", "updated_at"]
|
||
if should_close:
|
||
self.status = ProcurementStatus.COMPLETED
|
||
self.completed_at = timezone.now()
|
||
update_fields.extend(["status", "completed_at"])
|
||
|
||
if save:
|
||
self.save(update_fields=update_fields)
|
||
return new_status
|
||
|
||
|
||
class ProcurementItem(models.Model):
|
||
"""Позиция в заявке на закупку."""
|
||
|
||
request = models.ForeignKey(
|
||
ProcurementRequest,
|
||
on_delete=models.CASCADE,
|
||
related_name="items",
|
||
verbose_name="Заявка",
|
||
)
|
||
name = models.CharField(
|
||
"Название", max_length=255, help_text="Название товара или услуги"
|
||
)
|
||
description = models.TextField(
|
||
"Описание",
|
||
blank=True,
|
||
help_text="Подробное описание, технические характеристики",
|
||
)
|
||
quantity = models.PositiveIntegerField(
|
||
"Количество", default=1, validators=[MinValueValidator(1)]
|
||
)
|
||
unit = models.CharField(
|
||
"Единица измерения",
|
||
max_length=50,
|
||
default="шт",
|
||
help_text="Например: шт, кг, л, упак, м",
|
||
)
|
||
estimated_unit_price = models.DecimalField(
|
||
"Цена за единицу",
|
||
max_digits=12,
|
||
decimal_places=2,
|
||
null=True,
|
||
blank=True,
|
||
validators=[MinValueValidator(Decimal("0.01"))],
|
||
)
|
||
supplier_info = models.TextField(
|
||
"Информация о поставщике",
|
||
blank=True,
|
||
help_text="Ссылки на товар, контакты поставщика",
|
||
)
|
||
links = models.JSONField(
|
||
"Ссылки",
|
||
default=list,
|
||
blank=True,
|
||
help_text="Список ссылок на позицию",
|
||
)
|
||
expected_delivery_date = models.DateField(
|
||
"Ожидаемая дата поступления",
|
||
null=True,
|
||
blank=True,
|
||
)
|
||
actual_unit_price = models.DecimalField(
|
||
"Фактическая цена за единицу",
|
||
max_digits=12,
|
||
decimal_places=2,
|
||
null=True,
|
||
blank=True,
|
||
validators=[MinValueValidator(Decimal("0.01"))],
|
||
)
|
||
ordered_quantity = models.PositiveIntegerField(
|
||
"Заказанное количество",
|
||
null=True,
|
||
blank=True,
|
||
validators=[MinValueValidator(0)],
|
||
help_text="Сколько единиц заказал исполнитель",
|
||
)
|
||
received_quantity = models.PositiveIntegerField(
|
||
"Полученное количество",
|
||
null=True,
|
||
blank=True,
|
||
validators=[MinValueValidator(0)],
|
||
help_text="Сколько единиц фактически получено",
|
||
)
|
||
execution_status = models.CharField(
|
||
"Статус выполнения",
|
||
max_length=30,
|
||
choices=ProcurementItemExecutionStatus.choices,
|
||
default=ProcurementItemExecutionStatus.PENDING,
|
||
)
|
||
executor_comment = models.TextField(
|
||
"Комментарий исполнителя",
|
||
blank=True,
|
||
)
|
||
equipment = models.OneToOneField(
|
||
"Equipment",
|
||
on_delete=models.SET_NULL,
|
||
null=True,
|
||
blank=True,
|
||
related_name="procurement_item",
|
||
verbose_name="Оборудование",
|
||
help_text="Связь с оборудованием после закупки",
|
||
)
|
||
created_at = models.DateTimeField("Создано", auto_now_add=True)
|
||
|
||
class Meta:
|
||
verbose_name = "Позиция заявки"
|
||
verbose_name_plural = "Позиции заявок"
|
||
ordering = ["id"]
|
||
|
||
def __str__(self):
|
||
return f"{self.name} ({self.quantity} {self.unit})"
|
||
|
||
@property
|
||
def total_price(self):
|
||
"""Общая стоимость позиции."""
|
||
if self.estimated_unit_price is None:
|
||
return Decimal("0.00")
|
||
return self.estimated_unit_price * self.quantity
|
||
|
||
def clean(self):
|
||
super().clean()
|
||
if (
|
||
self.ordered_quantity is not None
|
||
and self.ordered_quantity > self.quantity
|
||
):
|
||
raise ValidationError(
|
||
{"ordered_quantity": "Не может быть больше количества позиции"}
|
||
)
|
||
if (
|
||
self.received_quantity is not None
|
||
and self.received_quantity > self.quantity
|
||
):
|
||
raise ValidationError(
|
||
{"received_quantity": "Не может быть больше количества позиции"}
|
||
)
|
||
|
||
@staticmethod
|
||
def _mark_update_field(update_fields, field):
|
||
if update_fields is not None:
|
||
update_fields.add(field)
|
||
|
||
def _sync_execution_status_from_quantities(self, update_fields=None):
|
||
workflow_statuses = {
|
||
ProcurementItemExecutionStatus.PENDING,
|
||
ProcurementItemExecutionStatus.ORDERED,
|
||
ProcurementItemExecutionStatus.RECEIVED,
|
||
}
|
||
if self.execution_status not in workflow_statuses:
|
||
return
|
||
|
||
ordered_quantity = self.ordered_quantity or 0
|
||
received_quantity = self.received_quantity or 0
|
||
|
||
if received_quantity > 0 and self.ordered_quantity is None:
|
||
self.ordered_quantity = min(received_quantity, self.quantity)
|
||
self._mark_update_field(update_fields, "ordered_quantity")
|
||
ordered_quantity = self.ordered_quantity
|
||
elif received_quantity > 0 and ordered_quantity < received_quantity:
|
||
self.ordered_quantity = min(received_quantity, self.quantity)
|
||
self._mark_update_field(update_fields, "ordered_quantity")
|
||
ordered_quantity = self.ordered_quantity
|
||
|
||
new_status = self.execution_status
|
||
if received_quantity > 0:
|
||
new_status = (
|
||
ProcurementItemExecutionStatus.RECEIVED
|
||
if received_quantity >= self.quantity
|
||
else ProcurementItemExecutionStatus.ORDERED
|
||
)
|
||
elif ordered_quantity > 0:
|
||
new_status = ProcurementItemExecutionStatus.ORDERED
|
||
elif self.execution_status in {
|
||
ProcurementItemExecutionStatus.ORDERED,
|
||
ProcurementItemExecutionStatus.RECEIVED,
|
||
}:
|
||
new_status = ProcurementItemExecutionStatus.PENDING
|
||
|
||
if new_status != self.execution_status:
|
||
self.execution_status = new_status
|
||
self._mark_update_field(update_fields, "execution_status")
|
||
|
||
def save(self, *args, **kwargs):
|
||
update_fields = kwargs.get("update_fields")
|
||
if update_fields is not None:
|
||
update_fields = set(update_fields)
|
||
kwargs["update_fields"] = update_fields
|
||
|
||
if (
|
||
self.execution_status == ProcurementItemExecutionStatus.ORDERED
|
||
and self.ordered_quantity is None
|
||
):
|
||
self.ordered_quantity = self.quantity
|
||
self._mark_update_field(update_fields, "ordered_quantity")
|
||
if self.execution_status == ProcurementItemExecutionStatus.RECEIVED:
|
||
if self.ordered_quantity is None:
|
||
self.ordered_quantity = self.quantity
|
||
self._mark_update_field(update_fields, "ordered_quantity")
|
||
if self.received_quantity is None:
|
||
self.received_quantity = self.quantity
|
||
self._mark_update_field(update_fields, "received_quantity")
|
||
self._sync_execution_status_from_quantities(update_fields=update_fields)
|
||
super().save(*args, **kwargs)
|
||
if self.request_id:
|
||
self.request.recalculate_fulfillment_status(save=True)
|
||
|
||
def delete(self, *args, **kwargs):
|
||
request = self.request
|
||
result = super().delete(*args, **kwargs)
|
||
request.recalculate_fulfillment_status(save=True)
|
||
return result
|
||
|
||
|
||
class ApprovalRoute(models.Model):
|
||
"""Правило получения согласующего для этапа с заданным приоритетом."""
|
||
|
||
class ResolverType(models.TextChoices):
|
||
DEPARTMENT_HEAD = "department_head", "Руководитель отдела"
|
||
FIXED_EMPLOYEE = "fixed_employee", "Конкретный сотрудник"
|
||
|
||
priority = models.PositiveSmallIntegerField(
|
||
"Приоритет",
|
||
unique=True,
|
||
db_index=True,
|
||
help_text="Чем меньше число, тем раньше этап в цепочке согласования.",
|
||
)
|
||
min_amount = models.DecimalField(
|
||
"Минимальная сумма заявки",
|
||
max_digits=12,
|
||
decimal_places=2,
|
||
null=True,
|
||
blank=True,
|
||
validators=[MinValueValidator(Decimal("0.00"))],
|
||
help_text=(
|
||
"Пусто = этап обязателен для любой суммы. "
|
||
"Иначе этап включается при сумме не меньше указанной."
|
||
),
|
||
)
|
||
name = models.CharField(
|
||
"Название этапа",
|
||
max_length=150,
|
||
blank=True,
|
||
help_text="Необязательно. Если заполнено, будет показано в интерфейсе.",
|
||
)
|
||
resolver_type = models.CharField(
|
||
"Тип резолва",
|
||
max_length=20,
|
||
choices=ResolverType.choices,
|
||
default=ResolverType.FIXED_EMPLOYEE,
|
||
)
|
||
employee = models.ForeignKey(
|
||
User,
|
||
on_delete=models.PROTECT,
|
||
related_name="approval_routes",
|
||
verbose_name="Согласующий",
|
||
null=True,
|
||
blank=True,
|
||
)
|
||
|
||
class Meta:
|
||
verbose_name = "Маршрут согласования"
|
||
verbose_name_plural = "Маршруты согласования"
|
||
ordering = ["priority", "id"]
|
||
|
||
@classmethod
|
||
def get_applicable_routes(cls, total_cost):
|
||
return cls.objects.filter(
|
||
models.Q(min_amount__isnull=True)
|
||
| models.Q(min_amount__lte=total_cost)
|
||
).order_by("priority", "id")
|
||
|
||
def __str__(self):
|
||
threshold = "" if self.min_amount is None else f" от {self.min_amount}"
|
||
if self.resolver_type == self.ResolverType.DEPARTMENT_HEAD:
|
||
return f"Этап {self.priority}{threshold} → руководитель отдела"
|
||
return f"Этап {self.priority}{threshold} → {self.employee}"
|
||
|
||
def clean(self):
|
||
super().clean()
|
||
if (
|
||
self.resolver_type == self.ResolverType.FIXED_EMPLOYEE
|
||
and not self.employee_id
|
||
):
|
||
raise ValidationError(
|
||
{"employee": "Для статического этапа укажите сотрудника."}
|
||
)
|
||
if (
|
||
self.resolver_type == self.ResolverType.DEPARTMENT_HEAD
|
||
and self.employee_id
|
||
):
|
||
raise ValidationError(
|
||
{
|
||
"employee": (
|
||
"Для этапа руководителя отдела "
|
||
"сотрудник не указывается."
|
||
)
|
||
}
|
||
)
|
||
|
||
|
||
class Approval(models.Model):
|
||
"""Запись о согласовании заявки."""
|
||
|
||
request = models.ForeignKey(
|
||
ProcurementRequest,
|
||
on_delete=models.CASCADE,
|
||
related_name="approvals",
|
||
verbose_name="Заявка",
|
||
)
|
||
approver = models.ForeignKey(
|
||
User,
|
||
on_delete=models.PROTECT,
|
||
related_name="procurement_approvals",
|
||
verbose_name="Согласующий",
|
||
)
|
||
priority = models.PositiveSmallIntegerField(
|
||
"Приоритет",
|
||
db_index=True,
|
||
)
|
||
step_name = models.CharField(
|
||
"Название этапа",
|
||
max_length=150,
|
||
blank=True,
|
||
)
|
||
status = models.CharField(
|
||
"Статус",
|
||
max_length=20,
|
||
choices=ApprovalStatus.choices,
|
||
default=ApprovalStatus.PENDING,
|
||
)
|
||
comment = models.TextField("Комментарий", blank=True)
|
||
created_at = models.DateTimeField("Создано", auto_now_add=True)
|
||
updated_at = models.DateTimeField("Обновлено", auto_now=True)
|
||
|
||
class Meta:
|
||
verbose_name = "Согласование"
|
||
verbose_name_plural = "Согласования"
|
||
ordering = ["priority", "created_at", "id"]
|
||
unique_together = [("request", "priority")]
|
||
|
||
def __str__(self):
|
||
return f"Этап {self.priority} - {self.get_status_display()}"
|
||
|
||
def save(self, *args, **kwargs):
|
||
if not self.step_name:
|
||
route = (
|
||
ApprovalRoute.objects.filter(priority=self.priority)
|
||
.only(
|
||
"name",
|
||
"resolver_type",
|
||
)
|
||
.first()
|
||
)
|
||
if route and route.name:
|
||
self.step_name = route.name
|
||
else:
|
||
resolver_type = route.resolver_type if route else None
|
||
self.step_name = get_default_approval_step_name(
|
||
self.priority,
|
||
resolver_type=resolver_type,
|
||
)
|
||
super().save(*args, **kwargs)
|
||
|
||
|
||
class EquipmentCategory(models.Model):
|
||
"""Категория оборудования (иерархическая)."""
|
||
|
||
name = models.CharField("Название", max_length=100, unique=True)
|
||
parent = models.ForeignKey(
|
||
"self",
|
||
on_delete=models.CASCADE,
|
||
null=True,
|
||
blank=True,
|
||
related_name="children",
|
||
verbose_name="Родительская категория",
|
||
)
|
||
description = models.TextField("Описание", blank=True)
|
||
icon = models.CharField(
|
||
"Иконка Bootstrap",
|
||
max_length=50,
|
||
blank=True,
|
||
help_text="Например: bi-laptop, bi-printer",
|
||
)
|
||
created_at = models.DateTimeField("Создано", auto_now_add=True)
|
||
|
||
class Meta:
|
||
verbose_name = "Категория оборудования"
|
||
verbose_name_plural = "Категории оборудования"
|
||
ordering = ["name"]
|
||
|
||
def __str__(self):
|
||
if self.parent:
|
||
return f"{self.parent.name} → {self.name}"
|
||
return self.name
|
||
|
||
@property
|
||
def full_path(self):
|
||
"""Полный путь категории."""
|
||
if self.parent:
|
||
return f"{self.parent.full_path} → {self.name}"
|
||
return self.name
|
||
|
||
|
||
class Equipment(models.Model):
|
||
"""Единица оборудования/инвентаря."""
|
||
|
||
name = models.CharField("Название", max_length=255)
|
||
inventory_number = models.CharField(
|
||
"Инвентарный номер",
|
||
max_length=50,
|
||
unique=True,
|
||
help_text="Например: INV-2024-0001",
|
||
)
|
||
serial_number = models.CharField(
|
||
"Серийный номер",
|
||
max_length=100,
|
||
blank=True,
|
||
help_text="Серийный номер производителя",
|
||
)
|
||
category = models.ForeignKey(
|
||
EquipmentCategory,
|
||
on_delete=models.PROTECT,
|
||
related_name="equipment",
|
||
verbose_name="Категория",
|
||
)
|
||
status = models.CharField(
|
||
"Статус",
|
||
max_length=20,
|
||
choices=EquipmentStatus.choices,
|
||
default=EquipmentStatus.AVAILABLE,
|
||
)
|
||
department = models.ForeignKey(
|
||
Department,
|
||
on_delete=models.PROTECT,
|
||
related_name="equipment",
|
||
verbose_name="Отдел",
|
||
)
|
||
responsible_person = models.ForeignKey(
|
||
User,
|
||
on_delete=models.SET_NULL,
|
||
null=True,
|
||
blank=True,
|
||
related_name="responsible_equipment",
|
||
verbose_name="Ответственный",
|
||
)
|
||
location = models.CharField(
|
||
"Расположение",
|
||
max_length=255,
|
||
blank=True,
|
||
help_text="Например: Офис 3.14, Стеллаж А-5",
|
||
)
|
||
purchase_date = models.DateField("Дата покупки")
|
||
warranty_until = models.DateField("Гарантия до", null=True, blank=True)
|
||
purchase_cost = models.DecimalField(
|
||
"Стоимость покупки",
|
||
max_digits=12,
|
||
decimal_places=2,
|
||
validators=[MinValueValidator(Decimal("0.01"))],
|
||
)
|
||
notes = models.TextField("Примечания", blank=True)
|
||
created_at = models.DateTimeField("Создано", auto_now_add=True)
|
||
updated_at = models.DateTimeField("Обновлено", auto_now=True)
|
||
|
||
class Meta:
|
||
verbose_name = "Оборудование"
|
||
verbose_name_plural = "Оборудование"
|
||
ordering = ["-created_at"]
|
||
|
||
def __str__(self):
|
||
return f"{self.inventory_number} - {self.name}"
|
||
|
||
@property
|
||
def is_under_warranty(self):
|
||
"""Находится ли под гарантией."""
|
||
if not self.warranty_until:
|
||
return False
|
||
return timezone.now().date() <= self.warranty_until
|
||
|
||
|
||
class MaintenanceRecord(models.Model):
|
||
"""Запись о техническом обслуживании оборудования."""
|
||
|
||
equipment = models.ForeignKey(
|
||
Equipment,
|
||
on_delete=models.CASCADE,
|
||
related_name="maintenance_history",
|
||
verbose_name="Оборудование",
|
||
)
|
||
date = models.DateField("Дата обслуживания")
|
||
type = models.CharField(
|
||
"Тип обслуживания", max_length=20, choices=MaintenanceType.choices
|
||
)
|
||
description = models.TextField("Описание", help_text="Что было сделано")
|
||
cost = models.DecimalField(
|
||
"Стоимость",
|
||
max_digits=10,
|
||
decimal_places=2,
|
||
default=Decimal("0.00"),
|
||
validators=[MinValueValidator(Decimal("0.00"))],
|
||
)
|
||
performed_by = models.ForeignKey(
|
||
User,
|
||
on_delete=models.PROTECT,
|
||
related_name="performed_maintenance",
|
||
verbose_name="Выполнил",
|
||
)
|
||
next_maintenance_date = models.DateField(
|
||
"Следующее ТО", null=True, blank=True
|
||
)
|
||
created_at = models.DateTimeField("Создано", auto_now_add=True)
|
||
|
||
class Meta:
|
||
verbose_name = "Запись обслуживания"
|
||
verbose_name_plural = "Записи обслуживания"
|
||
ordering = ["-date"]
|
||
|
||
def __str__(self):
|
||
return (
|
||
f"{self.equipment.inventory_number} - "
|
||
f"{self.get_type_display()} ({self.date})"
|
||
)
|
||
|
||
|
||
class EquipmentTransferLog(models.Model):
|
||
"""Лог передачи/перемещения оборудования."""
|
||
|
||
TRANSFER_TYPES = [
|
||
("assignment", "Назначение ответственного"),
|
||
("transfer", "Перемещение"),
|
||
("return", "Возврат"),
|
||
]
|
||
|
||
equipment = models.ForeignKey(
|
||
Equipment,
|
||
on_delete=models.CASCADE,
|
||
related_name="transfer_logs",
|
||
verbose_name="Оборудование",
|
||
)
|
||
from_department = models.ForeignKey(
|
||
Department,
|
||
on_delete=models.SET_NULL,
|
||
null=True,
|
||
blank=True,
|
||
related_name="transfers_out",
|
||
verbose_name="Из отдела",
|
||
)
|
||
to_department = models.ForeignKey(
|
||
Department,
|
||
on_delete=models.SET_NULL,
|
||
null=True,
|
||
blank=True,
|
||
related_name="transfers_in",
|
||
verbose_name="В отдел",
|
||
)
|
||
from_person = models.ForeignKey(
|
||
User,
|
||
on_delete=models.SET_NULL,
|
||
null=True,
|
||
blank=True,
|
||
related_name="equipment_given",
|
||
verbose_name="От кого",
|
||
)
|
||
to_person = models.ForeignKey(
|
||
User,
|
||
on_delete=models.SET_NULL,
|
||
null=True,
|
||
blank=True,
|
||
related_name="equipment_received",
|
||
verbose_name="Кому",
|
||
)
|
||
from_location = models.CharField("Откуда", max_length=255, blank=True)
|
||
to_location = models.CharField("Куда", max_length=255, blank=True)
|
||
transfer_type = models.CharField(
|
||
"Тип передачи",
|
||
max_length=20,
|
||
choices=TRANSFER_TYPES,
|
||
default="transfer",
|
||
)
|
||
reason = models.TextField("Причина/комментарий", blank=True)
|
||
created_at = models.DateTimeField("Дата передачи", auto_now_add=True)
|
||
created_by = models.ForeignKey(
|
||
User,
|
||
on_delete=models.SET_NULL,
|
||
null=True,
|
||
blank=True,
|
||
related_name="transfers_created",
|
||
verbose_name="Кто оформил",
|
||
)
|
||
|
||
class Meta:
|
||
verbose_name = "Лог передачи"
|
||
verbose_name_plural = "Логи передач"
|
||
ordering = ["-created_at"]
|
||
|
||
def __str__(self):
|
||
return (
|
||
f"{self.equipment.inventory_number}: "
|
||
f"{self.from_person or 'Склад'} → {self.to_person or 'Склад'}"
|
||
)
|
||
|
||
|
||
class Budget(models.Model):
|
||
"""Бюджет отдела на квартал."""
|
||
|
||
department = models.ForeignKey(
|
||
Department,
|
||
on_delete=models.CASCADE,
|
||
related_name="budgets",
|
||
verbose_name="Отдел",
|
||
)
|
||
year = models.PositiveIntegerField("Год", help_text="Например: 2025")
|
||
quarter = models.PositiveIntegerField(
|
||
"Квартал",
|
||
choices=[
|
||
(1, "1 квартал"),
|
||
(2, "2 квартал"),
|
||
(3, "3 квартал"),
|
||
(4, "4 квартал"),
|
||
],
|
||
)
|
||
allocated_amount = models.DecimalField(
|
||
"Выделено",
|
||
max_digits=14,
|
||
decimal_places=2,
|
||
validators=[MinValueValidator(Decimal("0.00"))],
|
||
)
|
||
spent_amount = models.DecimalField(
|
||
"Потрачено",
|
||
max_digits=14,
|
||
decimal_places=2,
|
||
default=Decimal("0.00"),
|
||
validators=[MinValueValidator(Decimal("0.00"))],
|
||
)
|
||
created_at = models.DateTimeField("Создано", auto_now_add=True)
|
||
updated_at = models.DateTimeField("Обновлено", auto_now=True)
|
||
|
||
class Meta:
|
||
verbose_name = "Бюджет"
|
||
verbose_name_plural = "Бюджеты"
|
||
ordering = ["-year", "-quarter"]
|
||
unique_together = [("department", "year", "quarter")]
|
||
|
||
def __str__(self):
|
||
return f"{self.department.name} - {self.year} Q{self.quarter}"
|
||
|
||
@property
|
||
def remaining_amount(self):
|
||
"""Остаток бюджета."""
|
||
allocated = self.allocated_amount or Decimal("0.00")
|
||
return allocated - self.spent_amount
|
||
|
||
@property
|
||
def reserved_amount(self):
|
||
"""Сумма зарезервированная pending заявками."""
|
||
# Суммируем total_cost всех pending заявок через их позиции
|
||
pending_requests = self.department.procurement_requests.filter(
|
||
status=ProcurementStatus.PENDING,
|
||
created_at__year=self.year,
|
||
created_at__month__in=self._quarter_months(),
|
||
)
|
||
|
||
total = Decimal("0.00")
|
||
for req in pending_requests:
|
||
total += req.total_cost
|
||
return total
|
||
|
||
@property
|
||
def available_amount(self):
|
||
"""Доступный бюджет (с учётом резерва)."""
|
||
return self.remaining_amount - self.reserved_amount
|
||
|
||
def _quarter_months(self):
|
||
"""Получить месяцы квартала."""
|
||
return {
|
||
1: [1, 2, 3],
|
||
2: [4, 5, 6],
|
||
3: [7, 8, 9],
|
||
4: [10, 11, 12],
|
||
}[self.quarter]
|
||
|
||
@property
|
||
def utilization_percentage(self):
|
||
"""Процент использования бюджета."""
|
||
allocated = self.allocated_amount or Decimal("0.00")
|
||
if allocated == 0:
|
||
return Decimal("0.00")
|
||
return (self.spent_amount / allocated * 100).quantize(Decimal("0.01"))
|
||
|
||
def can_spend(self, amount):
|
||
"""Проверка возможности потратить сумму."""
|
||
return self.remaining_amount >= amount
|
||
|
||
|
||
class Supplier(models.Model):
|
||
"""Поставщик товаров/услуг."""
|
||
|
||
name = models.CharField("Название", max_length=255)
|
||
contact_person = models.CharField(
|
||
"Контактное лицо", max_length=255, blank=True
|
||
)
|
||
phone = models.CharField("Телефон", max_length=50, blank=True)
|
||
email = models.EmailField("Email", blank=True)
|
||
address = models.TextField("Адрес", blank=True)
|
||
website = models.URLField("Веб-сайт", blank=True)
|
||
inn = models.CharField(
|
||
"ИНН",
|
||
max_length=12,
|
||
blank=True,
|
||
help_text="ИНН организации (10 или 12 цифр)",
|
||
)
|
||
rating = models.DecimalField(
|
||
"Рейтинг",
|
||
max_digits=3,
|
||
decimal_places=2,
|
||
default=Decimal("0.00"),
|
||
validators=[MinValueValidator(Decimal("0.00"))],
|
||
)
|
||
is_active = models.BooleanField("Активен", default=True)
|
||
notes = models.TextField("Примечания", blank=True)
|
||
created_at = models.DateTimeField("Создано", auto_now_add=True)
|
||
updated_at = models.DateTimeField("Обновлено", auto_now=True)
|
||
|
||
class Meta:
|
||
verbose_name = "Поставщик"
|
||
verbose_name_plural = "Поставщики"
|
||
ordering = ["name"]
|
||
|
||
def __str__(self):
|
||
return self.name
|