django unique_together
Step 1: Import necessary modules
from django.db import models
Step 2: Define your model with unique_together constraint
class YourModel(models.Model):
field1 = models.CharField(max_length=100)
field2 = models.CharField(max_length=100)
class Meta:
unique_together = ('field1', 'field2')
Step 3: Apply migrations
python manage.py makemigrations
python manage.py migrate
Explanation:
- Step 1: Import the required modules, specifically the models
module from django.db
.
Step 2: Define your model (
YourModel
) with the desired fields (field1
andfield2
). In theMeta
class of the model, set theunique_together
attribute to a tuple containing the names of the fields that should have a unique constraint when combined.Step 3: Apply migrations to update the database schema based on the changes made in the model. Use the
makemigrations
command to create migration files and themigrate
command to apply those changes to the database.