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 vote307 views1 answer
How to get last values or data in django orm
Python Django
0 vote304 views1 answer
How to call a python self-defined function in VSCode Terminal
Python
1 vote293 views2 answers
What is fourier transform in python
Python
0 vote288 views1 answer
Connect to spark cluster
Python
16 votes275 views2 answers
Python to excel
Python
0 vote357 views1 answer
Cant import flask mail
Python Flask
13 votes370 views4 answers
Update anaconda
Python
0 vote334 views1 answer
Membuat chat bot dengan python
Python
2 votes307 views5 answers
Swap keys and values in dictionary python
Python
0 vote285 views1 answer
How many perfect squared lie between 1 and 400
Python