src/notes/models/base.py
author ymh <ymh.work@gmail.com>
Wed, 19 Jul 2017 15:57:13 +0200
changeset 119 8ff8e2aee0f9
parent 24 3b3999550508
permissions -rw-r--r--
add parameter to filter session and note by updated date. Add pagination on sessions and notes. add read only endpoint at root level to list notes

"""
base abstract models
"""
import uuid

from concurrency.fields import AutoIncVersionField
from django.db import models
from django.utils.translation import ugettext_lazy as _


class ModelManager(models.Manager):
    def get_by_natural_key(self, ext_id):
        return self.get(ext_id=ext_id)

class Model(models.Model):
    objects = ModelManager()

    created = models.DateTimeField(auto_now_add=True, verbose_name=_('Model|created'), db_index=True)
    updated = models.DateTimeField(auto_now=True, verbose_name=_('Model|updated'), db_index=True)
    ext_id = models.UUIDField(unique=True, default=uuid.uuid4, verbose_name=_('Model|ext_id'))
    version = AutoIncVersionField(verbose_name=_('Model|version'))

    def natural_key(self):
        return (self.ext_id, )

    class Meta:
        abstract = True