how to avoid inserting duplicate records in orm django

To avoid inserting duplicate records in Django's ORM, you can follow these steps:

Step 1: Define a unique constraint in the model - In your model's definition, you can specify one or more fields to be unique using the unique=True parameter. For example:

class MyModel(models.Model):
    field1 = models.CharField(max_length=100, unique=True)
    field2 = models.IntegerField(unique=True)

Step 2: Use the get_or_create() method - Instead of using the create() method to insert records, use the get_or_create() method. This method will either retrieve an existing record or create a new one if it doesn't exist. For example:

obj, created = MyModel.objects.get_or_create(field1='value1', field2=123)

• The get_or_create() method returns a tuple containing the object and a boolean value indicating whether the object was created or not. You can use this boolean value to check if a new record was inserted or not.

Step 3: Use the update_or_create() method (optional) - If you want to update an existing record if it already exists, you can use the update_or_create() method. This method will either update the existing record or create a new one if it doesn't exist. For example:

obj, created = MyModel.objects.update_or_create(field1='value1', defaults={'field2': 456})

• The update_or_create() method also returns a tuple containing the object and a boolean value indicating whether the object was created or not.

By following these steps, you can avoid inserting duplicate records in Django's ORM by defining unique constraints in your models and using the get_or_create() or update_or_create() methods to handle record creation or retrieval.