Django save methods

.save() in django

>>> one_entry = Entry.objects.get(pk=1)

Source: docs.djangoproject.com

.save() in django


from __future__ import print_function
from django.db import models
from django.db.models import signals
from django.db.models.signals import pre_save, post_save
from django.dispatch import receiver

__author__ = 'sobolevn'

class CustomManager(models.Manager):
    def get_queryset(self):
        super_query = super(models.Manager, self).get_queryset()
        print('Manager is called', super_query)
        return super_query


class ExtraObject(models.Model):
    name = models.CharField(max_length=30)

    def __unicode__(self):
        return self.name


class TestModel(models.Model):

    name = models.CharField(max_length=30)
    key = models.ForeignKey('ExtraObject')
    many = models.ManyToManyField('ExtraObject', related_name='extras')

    objects = CustomManager()

    def save(self, *args, **kwargs):
        print('save() is called.')
        super(TestModel, self).save(*args, **kwargs)

    def __unicode__(self):
        # Never do such things (access by foreing key) in real life,
        # because it hits the database.
        return u'{} {} {}'.format(self.name, self.key.name, self.many.count())


@receiver(pre_save, sender=TestModel)
@receiver(post_save, sender=TestModel)
def reicever(*args, **kwargs):
    print('signal dispatched')

Source: nullorempty.org

Similar codes

0 vote279 views1 answer
Django template child data in nested loop
Python Django
0 vote251 views1 answer
Extract only year from date python
Python
146 votes285 views6 answers
Os file exists
Python
11 votes282 views3 answers
Discord.py add reaction to message
Python
31 votes306 views1 answer
Flask vs django
Python Django
2 votes256 views1 answer
Pytplot arc
Python
5 votes265 views1 answer
Input command in python shell
Python
0 vote280 views3 answers
Make first row column names pandas
Python
1 vote256 views1 answer
Discord.py dm specific user
Python
0 vote269 views2 answers
Generate secret key python
Python