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

0 vote158 views1 answer
Loop through list, find specific number and output element's index
Python
0 vote170 views1 answer
Cvhaardetectobjects
Python
1 vote180 views1 answer
How to add two different times in python
Python
0 vote126 views1 answer
Json payload python
Python
1 vote217 views1 answer
Django models.py convert DateTimeField to DateField
Python Django
51 votes161 views5 answers
Mr robot
Python
0 vote245 views1 answer
Spacy create tokenizer
Python
23 votes172 views1 answer
Python month number from date
Python
0 vote187 views1 answer
My name is raghuveer
Python
0 vote173 views1 answer
Pil format multiline text
Python