An abstract base class for any model that expresses a time-range. Adds
end nullable DateTimeFields, and provides a new
timeframed manager on the subclass whose queryset pre-filters results
to only include those which have a
start which is not in the future,
end which is not in the past. If either
null, the manager will include it.
from model_utils.models import TimeFramedModel from datetime import datetime, timedelta class Post(TimeFramedModel): pass p = Post() p.start = datetime.utcnow() - timedelta(days=1) p.end = datetime.utcnow() + timedelta(days=7) p.save() # this query will return the above Post instance: Post.timeframed.all() p.start = None p.end = None p.save() # this query will also return the above Post instance, because # the `start` and/or `end` are NULL. Post.timeframed.all() p.start = datetime.utcnow() + timedelta(days=7) p.save() # this query will NOT return our Post instance, because # the start date is in the future. Post.timeframed.all()
This abstract base class just provides self-updating
modified fields on any model that inherits from it.
Pulls together StatusField, MonitorField and QueryManager into an abstract base class for any model with a “status.”
Just provide a
STATUS class-attribute (a Choices object or a
list of two-tuples), and your model will have a
status field with
those choices, a
status_changed field containing the date-time the
status was last changed, and a manager for each status that
returns objects with that status only:
from model_utils.models import StatusModel from model_utils import Choices class Article(StatusModel): STATUS = Choices('draft', 'published') # ... a = Article() a.status = Article.STATUS.published # this save will update a.status_changed a.save() # this query will only return published articles: Article.published.all()
This abstract base class just provides a field
is_removed which is
set to True instead of removing the instance. Entities returned in
available_objects are limited to not-deleted instances.
Note that relying on the default
objects manager to filter out not-deleted
instances is deprecated.
objects will include deleted objects in a future
This abstract base class provides
id field on any model that inherits from it
which will be the primary key.
If you dont want to set
id as primary key or change the field name, you can override it
with our UUIDField
Also you can override the default uuid version. Versions 1,3,4 and 5 are now supported.
from model_utils.models import UUIDModel class MyAppModel(UUIDModel): pass
An abstract base class model to pass a parameter
save method in order to disable signals
from model_utils.models import SaveSignalHandlingModel class SaveSignalTestModel(SaveSignalHandlingModel): name = models.CharField(max_length=20) obj = SaveSignalTestModel(name='Test') # Note: If you use `Model.objects.create`, the signals can't be disabled obj.save(signals_to_disable=['pre_save'] # disable `pre_save` signal