modelo_base_django.py

# -*- coding: utf-8 -*-
from __future__ import unicode_literals

import uuid
from django.db import models
from django.core.exceptions import ObjectDoesNotExist
from django.utils import timezone
from django.contrib.auth.models import AbstractUser, Group


# =======================================================================================
class CareersModel(models.Model):
    id = models.BigAutoField(primary_key=True, null=False, blank=False)
    api_id = models.UUIDField(null=False, blank=False, default=uuid.uuid4, editable=False, db_index=True)
    created_dt = models.DateTimeField(null=False, blank=False, default=timezone.now)
    updated_dt = models.DateTimeField(null=True, blank=True)

    # -----------------------------------------------------------------------------------
    def save(self, *args, **kwargs):
        if self.pk:  # Actualizar el campo updated_dt cuando se hace un update
            self.updated_dt = timezone.now()
        super(CareersModel, self).save(*args, **kwargs)  # jamasmente nunca never eliminar esta linea

    # -----------------------------------------------------------------------------------
    class Meta:
        abstract = True


# =======================================================================================
class CareersUser(AbstractUser, CareersModel):
    """ If you’re starting a new project, it’s highly recommended to set up a custom user model,
        even if the default User model is sufficient for you. This model behaves identically to the
        default user model, but you’ll be able to customize it in the future if the need arises
        https://docs.djangoproject.com/en/1.11/topics/auth/customizing/
    """
    USER_TYPE_STUDENT, USER_TYPE_EMPLOYEER, USER_TYPE_MENTOR = range(3)
    USER_TYPES = (
        (USER_TYPE_STUDENT, 'Estudiante'),
        (USER_TYPE_EMPLOYEER, 'Empresa'),
        (USER_TYPE_MENTOR, 'Mentor')
    )
    user_type = models.SmallIntegerField(null=False, blank=False, default=USER_TYPE_STUDENT, choices=USER_TYPES)

    # ----------------------------------------------------------------------------------
    class Meta:
        db_table = 'careers_user'
        verbose_name = 'Usuario'
        verbose_name_plural = 'Usuarios'