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 vote185 views1 answer
Multiple pdf to csv python
Python
0 vote191 views1 answer
Incremental betekenis
Python
16 votes167 views6 answers
Map in python
Python
23 votes174 views2 answers
Django rest
Python
4 votes184 views6 answers
Recursion in python
Python
0 vote179 views2 answers
Django create view filter options
Python
0 vote184 views1 answer
Separating tuple in pandas
Python
1 vote177 views1 answer
Python nCr n choose r function
Python
0 vote180 views2 answers
Python code checker
Python
8 votes199 views4 answers
Glob
Python