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Custom Field Validations in Django Models

Customize Object Names with str Method

Last Updated : 21 May, 2025

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When you create instances of a Django model, by default, they appear in the Django admin interface and elsewhere as "ModelName object (1)" (or a similar format). This can make it hard to identify records, especially when you have many objects.

Why Customize Object Display Names?

By default, Django doesn’t know how to represent your objects as readable strings, so it uses a generic placeholder. Customizing the display name helps you and your users quickly identify objects in the admin panel and anywhere else the object is displayed as a string.

This article explains how to customize the display name of your Django model instances by overriding the __str__ method in your model class. This makes the admin interface and other representations much more meaningful and easier to understand.

Example: Default Behavior

Consider a project named geeksforgeeks having an app named geeks

Refer to the following Articles to check how to create Django App and Project:

How to Create a Basic Project using MVT in Django?
How to Create an App in Django ?

Enter the following code into models.py file of geeks app.

Python

from django.db import models from django.db.models import Model # Create your models here.  class GeeksModel(Model):     geeks_field = models.CharField(max_length = 200)

After running migrations and creating an instance with "GfG is Best" as the geeks_field value, the object will appear as GeeksModel object(1) in the admin interface, which isn’t very descriptive.:

display name django models

How to Customize the Display Name Using str

To change this, add a __str__ method to your model. This method should return a string that represents the object in a human-readable way.

Here’s how to modify the GeeksModel:

Python

from django.db import models  class GeeksModel(models.Model):     geeks_field = models.CharField(max_length=200)          def __str__(self):         return self.geeks_field  # Returns the value of geeks_field as the display name

Now, when you create an object with geeks_field="GfG is Best", the admin interface will display "GfG is Best"

instead of the generic "GeeksModel object (1)":

django-object-name-display

Key Points to Remember

The __str__ method must return a string.
It’s best to return a value that uniquely and clearly identifies the object.
You can customize the return string as needed, for example, combining multiple fields:

Custom Field Validations in Django Models

N

NaveenArora

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Article Tags :

Python
Python Django
Django-models

Practice Tags :

python

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