Django manager

# First, define the Manager subclass.
class DahlBookManager(models.Manager):
    def get_queryset(self):
        return super().get_queryset().filter(author='Roald Dahl')

# Then hook it into the Book model explicitly.
class Book(models.Model):
    title = models.CharField(max_length=100)
    author = models.CharField(max_length=50)

    objects = models.Manager() # The default manager.
    dahl_objects = DahlBookManager() # The Dahl-specific manager.

Source: docs.djangoproject.com

Similar codes

12 votes217 views6 answers
Python 2d array
Python
0 vote216 views1 answer
Get linkinstance revit api
Python
9 votes212 views4 answers
Fetch member by id discord.py
Python
-1 vote201 views1 answer
Gdscript iterate over dictionary
Python
7 votes235 views2 answers
Randomly choose between two numbers python
Python
0 vote200 views1 answer
Python generate sine wave pyaudio
Python
0 vote236 views1 answer
Tail a log file with python
Python
5 votes213 views1 answer
Pandas split dataframe to train and test
Python
85 votes197 views6 answers
For python
Python
0 vote196 views1 answer
Not want to assign all values of a collection of values in python
Python