Hide GraphQL Exceptions in Strawberry with Django: A Complete Guide (2026)

When building applications with GraphQL using Strawberry and Django, developers often encounter a common issue: exceptions are exposed in a way that can be problematic for both security and user experience. This tutorial will guide you through handling exceptions in a way that hides sensitive error details from end users, while still providing meaningful feedback for debugging and logging.

Understanding how to manage exceptions effectively is crucial for maintaining the integrity and professionalism of your application. By the end of this guide, you will have a robust solution for managing GraphQL errors gracefully in your Django projects using Strawberry.

Prerequisites

• Basic knowledge of Django and Python
• Familiarity with GraphQL concepts
• Experience with Strawberry GraphQL library
• Python 3.12 and Django 4.0 installed
• Strawberry GraphQL version 0.126 or later

Step 1: Setting Up Your Django Project

If you haven't already set up a Django project, you can start by creating a new one:

django-admin startproject mygraphqldemo

Navigate into your project directory:

cd mygraphqldemo

Install Strawberry and GraphQL:

pip install strawberry-graphql

Step 2: Configuring Strawberry in Django

First, create a new Django app to handle GraphQL:

django-admin startapp graphqlapi

In your settings.py, add graphqlapi to your INSTALLED_APPS:

INSTALLED_APPS = [
    ...
    'graphqlapi',
]

Then, create a basic schema in your app's schema.py:

import strawberry

@strawberry.type
class Query:
    hello: str = "Hello, World!"

schema = strawberry.Schema(query=Query)

Step 3: Handling Exceptions in Strawberry

To customize exception handling, you'll need to define a custom exception formatter. This will allow you to control what is displayed when an error occurs.

from strawberry.exceptions import ExceptionWithExtensions

class CustomGraphQLException(ExceptionWithExtensions):
    def __init__(self, message: str):
        super().__init__(message=message, extensions={"code": "CUSTOM_ERROR"})

    def format(self):
        return {"message": "An error occurred"}

Integrate this exception into your schema by modifying how errors are processed. You can do this by subclassing the default exception formatter.

Step 4: Integrating Exception Handling with Django Views

Create a view to handle GraphQL requests and customize error formatting:

from django.http import JsonResponse
from strawberry.django.views import GraphQLView

class CustomGraphQLView(GraphQLView):
    def execute(self, *args, **kwargs):
        result = super().execute(*args, **kwargs)
        result.errors = [CustomGraphQLException(str(e)) for e in result.errors]
        return result

Update your urls.py to use this view:

from django.urls import path
from .views import CustomGraphQLView

urlpatterns = [
    path('graphql/', CustomGraphQLView.as_view(schema=schema)),
]

Step 5: Testing and Verifying the Setup

Run your development server:

python manage.py runserver

Using a tool like Insomnia or Postman, perform a GraphQL query to see how exceptions are handled:

{
  hello
}

You should see a generic error message if something goes wrong, without exposing internal details.

Common Errors/Troubleshooting

• Import Errors: Ensure all required packages are installed and properly imported.
• Incorrect Schema Path: Verify the schema import path in your Django views.
• Server Errors: Check server logs for detailed error messages during development.

Conclusion

By following this guide, you have successfully implemented a method to hide GraphQL exceptions in your Strawberry and Django projects. This not only enhances security but also improves user experience by presenting clean and understandable error messages. Remember to customize the error messages further to fit your application's needs.

Frequently Asked Questions

Why hide GraphQL exceptions?

Hiding exceptions prevents exposing sensitive information, enhancing security and improving user experience.

What is Strawberry in Django?

Strawberry is a Python library for building GraphQL APIs, which can be integrated with Django to handle GraphQL queries.

How can I test custom error handling?

Use tools like Insomnia or Postman to send GraphQL queries and verify how errors are displayed.