Django unique_together

# Preferred alternative to unique_together, Django 2.2+
# Use the 'constraints' var in class Meta 
class Volume(models.Model):
    id = models.AutoField(primary_key=True)
    journal_id = models.ForeignKey(Journals, db_column='jid', null=True, verbose_name="Journal")
    volume_number = models.CharField('Volume Number', max_length=100)
    comments = models.TextField('Comments', max_length=4000, blank=True)

    class Meta:
        constraints = [
            models.UniqueConstraint(fields=['journal_id', 'volume_number'], name='name of constraint')
        ]

Source: stackoverflow.com

Unique_together what is used of it in django

unique_together = [['driver', 'restaurant']]

Source: docs.djangoproject.com

Similar codes

1 vote280 views1 answer
Get wav file in dir
Python
2 votes265 views1 answer
Datetime to int python
Python
0 vote290 views1 answer
Regularization pytorch
Python
0 vote293 views2 answers
Python datetime yyyy-MM-dd'T'HH:mm:ssZ
Python
17 votes268 views6 answers
Python matplotlib
Python
0 vote377 views1 answer
Hpw to create related model in django rest framework logic
Python Django
7 votes284 views4 answers
From django.contrib import messages
Python
1 vote281 views1 answer
Server on python
Python
0 vote348 views1 answer
Test if instance in queryset django
Python Django
0 vote298 views1 answer
Nn.softmax for pure sconvoultional classifier
Python