Django manger

# 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

0 vote315 views2 answers
Getting url parameters with javascript
Python
4 votes296 views2 answers
ImportError: No module named django.core.wsgi
Python
0 vote310 views1 answer
How to get parent model object based on child model filter in django
Python
14 votes297 views3 answers
Flask link stylesheet
Python
3 votes316 views2 answers
Taking multiple input in python
Python
1 vote310 views1 answer
Unable to execute 'x86_64-linux-gnu-gcc': No such file or directoryunable to execute 'x86_64-linux-gnu-gcc': No such file or directory
Python
2 votes306 views2 answers
For each loop python 3
Python
26 votes321 views2 answers
Append write python
Python
0 vote321 views1 answer
Python - oordinated universal time
Python
26 votes389 views5 answers
Python class name
Python