django-timestamps 0.0.1

timestamps for django models

Django Timestamps

Adds created_at, updated_at, and/or deleted_at (soft-delete) to django models

Usage

from django.db import models
from django_timestamps.softDeletion import SoftDeletionModel
from django_timestamps.timestamps import TimestampsModel

class Device(SoftDeletionModel, TimestampsModel):
    name = models.CharField(max_length=20)
    os = models.CharField(max_length=20)

TimestampsModel adds created_at and updated_at fields to the model. This fields are updated automatically

SoftDeletionModel adds deleted_at (soft-delete)

To soft-delete a model you must call delete() function:

device = Device.objects.filter(id=1).first()
device.delete()

To hard-delete a model you must call hard_delete() function:

device = Device.objects.filter(id=1).first()
device.hard_delete()

To restore a model you must call restore() function and use all_objects instead of objects:

device = Device.all_objects.filter(id=1).first()
device.restore()

To get all objects trashed

devices_trashed = Device.all_objects.all().dead()

ModelViewSet for rest_framework:

Adds urls for soft-deleted elements, returns deleted_at:

#Example for devices:
#    (get)   /devices/trashed/       -> trashed elements, paginated
#    (get)   /devices/4/get-trashed/ -> get trashed element
#    (patch) /devices/4/restore/     -> restore trashed element

from django_timestamps.SoftDeleteViewSet import SoftDeleteViewSet

class DeviceViewSet(viewsets.ModelViewSet, SoftDeleteViewSet):
    queryset = Device.objects.all().order_by('id')
    serializer_class = DeviceSerializer
    querysetTrashed = Device.all_objects.all().dead().order_by('id')

    #add extra filters for queryset and querysetTrashed
    def full_queryset(self, queryset):

        user_id = self.request.query_params.get('user_id', None)
        if user_id:
            queryset = queryset.filter(user_id=user_id)

        return queryset