Django Ext
==========
Some extensions for Django.
# Models
## TimestampModel
Add `created_at` and `updated_at` for model.
## TimeRangeModel
Add `started_at` and `ended_at` for model.
## UserTrackModel
Add `created_by` and `update_by` for model.
This model requires `django-currentuser`, and should add it to the middleware classes in your settings.py:
```
MIDDLEWARE = (
...,
'django_currentuser.middleware.ThreadLocalUserMiddleware',
)
```
## ExtraFieldsManager
`ExtraFieldsManager` is intended to be used in conjunction with `ExtraFieldsQuerySet` to filter extra added fields using custom filter conditions.
While initializing the `ExtraFieldsManager` class, it is necessary to use the `fields` parameter to specify extra fields and their corresponding filter conditions generation functions.
Usage:
```
class MyModel(models.Model):
relation = models.ForeignKey(RelationModel, models.CASCADE, +, null=False)
objects = ExtraFieldsManager(fields={
# users: an extra field that is not present in the model
# lambda function: used to generate complex query conditions
'users': lambda x: Q(relation__data__users__contained_by=[str(user.id) for user in x]) | \
Q(relation__data__groups__contained_by=Group.objects.filter(user__in=x).distinct().values_list('id', flat=True))
})
```
# Commands
## translate
Translate the permission names into the local language.
```
$ python manage.py translate
```
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