ProFi/employees/models.py

from django.db import models
from core.models import ContactMixin  # Предполагается, что ContactMixin находится в приложении core

## Учет сотрудников (название приложения: employees)

class Position(models.Model):
    name = models.CharField(max_length=100, verbose_name="Название должности")

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = "Должность"
        verbose_name_plural = "Должности"


class Department(models.Model):
    name = models.CharField(max_length=100, verbose_name="Название подразделения")

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = "Подразделение"
        verbose_name_plural = "Подразделения"


class Employee(models.Model):
    department = models.ForeignKey(
        Department, on_delete=models.CASCADE, verbose_name="Подразделение"
    )
    position = models.ForeignKey(
        Position, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="Должность"
    )
    account = models.OneToOneField(
        "users.Account", on_delete=models.CASCADE, unique=True, verbose_name="Аккаунт"
    )

    @property
    def first_name(self):
        return self.account.first_name

    @first_name.setter
    def first_name(self, value):
        self.account.first_name = value

    @property
    def last_name(self):
        return self.account.last_name

    @last_name.setter
    def last_name(self, value):
        self.account.last_name = value

    @property
    def middle_name(self):
        return self.account.middle_name

    @middle_name.setter
    def middle_name(self, value):
        self.account.middle_name = value

    @property
    def phone(self):
        return self.account.phone

    @phone.setter
    def phone(self, value):
        self.account.phone = value

    @property
    def email(self):
        return self.account.email

    @email.setter
    def email(self, value):
        self.account.email = value

    def __str__(self):

        full_name = " ".join(filter(bool, [self.last_name, self.first_name]))

        return f"{full_name} - {self.position}"

    class Meta:
        verbose_name = "Сотрудник"
        verbose_name_plural = "Сотрудники"