Build powerful, efficient, and flexible GraphQL APIs with seamless Django integration.
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Brenton Partridge 7365ee3ec9 Prevent TypeError when bytes passed to cursor.execute in debug middleware
If DjangoDebugMiddleware is installed, calling `cursor.execute(b)` where b is a `bytes` object causes the recording (and thus the entire database call) to throw a TypeError due to 775644b536/graphene_django/debug/sql/tracking.py (L126) :

```
"is_select": sql.lower().strip().startswith("select"),
```

Calling execute with a bytes parameter, to my knowledge, is not currently done within the high-level abstractions in the Django ORM, but is very much supported by psycopg2, as evidenced by the use in psycopg2's own `execute_values` in https://github.com/psycopg/psycopg2/blob/2_9_3/lib/extras.py#L1270 :

```
cur.execute(b''.join(parts))
```

This fix ensures that the sql parameter is safely decoded before scanning whether it begins with SELECT; since this is the only usage, the change is trivial.

The only workaround if code calls execute_values is to disable the DjangoDebugMiddleware altogether, which is far from ideal.
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Graphene Logo Graphene-Django

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Graphene-Django is an open-source library that provides seamless integration between Django, a high-level Python web framework, and Graphene, a library for building GraphQL APIs. The library allows developers to create GraphQL APIs in Django quickly and efficiently while maintaining a high level of performance.

Features

  • Seamless integration with Django models
  • Automatic generation of GraphQL schema
  • Integration with Django's authentication and permission system
  • Easy querying and filtering of data
  • Support for Django's pagination system
  • Compatible with Django's form and validation system
  • Extensive documentation and community support

Installation

To install Graphene-Django, run the following command:

pip install graphene-django

Configuration

After installation, add 'graphene_django' to your Django project's INSTALLED_APPS list and define the GraphQL schema in your project's settings:

INSTALLED_APPS = [
    # ...
    'graphene_django',
]

GRAPHENE = {
    'SCHEMA': 'myapp.schema.schema'
}

Usage

To use Graphene-Django, create a schema.py file in your Django app directory and define your GraphQL types and queries:

import graphene
from graphene_django import DjangoObjectType
from .models import MyModel

class MyModelType(DjangoObjectType):
    class Meta:
        model = MyModel

class Query(graphene.ObjectType):
    mymodels = graphene.List(MyModelType)

    def resolve_mymodels(self, info, **kwargs):
        return MyModel.objects.all()

schema = graphene.Schema(query=Query)

Then, expose the GraphQL API in your Django project's urls.py file:

from django.urls import path
from graphene_django.views import GraphQLView
from . import schema

urlpatterns = [
    # ...
    path('graphql/', GraphQLView.as_view(graphiql=True)), # Given that schema path is defined in GRAPHENE['SCHEMA'] in your settings.py
]

Testing

Graphene-Django provides support for testing GraphQL APIs using Django's test client. To create tests, create a tests.py file in your Django app directory and write your test cases:

from django.test import TestCase
from graphene_django.utils.testing import GraphQLTestCase
from . import schema

class MyModelAPITestCase(GraphQLTestCase):
    GRAPHENE_SCHEMA = schema.schema

    def test_query_all_mymodels(self):
        response = self.query(
            '''
            query {
                mymodels {
                    id
                    name
                }
            }
            '''
        )

        self.assertResponseNoErrors(response)
        self.assertEqual(len(response.data['mymodels']), MyModel.objects.count())

Contributing

Contributions to Graphene-Django are always welcome! To get started, check the repository's issue tracker and contribution guidelines.

License

Graphene-Django is released under the MIT License.

Resources

Tutorials and Examples

  • Graphene - A library for building GraphQL APIs in Python
  • Graphene-SQLAlchemy - Integration between Graphene and SQLAlchemy, an Object Relational Mapper (ORM) for Python
  • Graphene-File-Upload - A package providing an Upload scalar for handling file uploads in Graphene
  • Graphene-Subscriptions - A package for adding real-time subscriptions to Graphene-based GraphQL APIs

Support

If you encounter any issues or have questions regarding Graphene-Django, feel free to submit an issue on the official GitHub repository. You can also ask for help and share your experiences with the Graphene-Django community on 💬 Discord

Release Notes