Django

Strawberry comes with a basic Django integration . It provides a view that you can use to serve your GraphQL schema:

from django.urls import path
from django.views.decorators.csrf import csrf_exempt
 
from strawberry.django.views import GraphQLView
 
from api.schema import schema
 
urlpatterns = [
    path("graphql/", csrf_exempt(GraphQLView.as_view(schema=schema))),
]

Strawberry only provides a GraphQL view for Django, Strawberry GraphQL Django provides integration with the models. import strawberry_django should do the same as import strawberry.django if both libraries are installed.

You’d also need to add strawberry_django to the INSTALLED_APPS of your project, this is needed to provide the template for the GraphiQL interface.

Options

The GraphQLView accepts the following arguments:

Deprecated options

The following options are deprecated and will be removed in a future release:

You can extend the view and override encode_json to customize the JSON encoding process.

Extending the view

We allow to extend the base GraphQLView , by overriding the following methods:

get_context

get_context allows to provide a custom context object that can be used in your resolver. You can return anything here, by default we return a StrawberryDjangoContext object.

@strawberry.type
class Query:
    @strawberry.field
    def user(self, info: strawberry.Info) -> str:
        return str(info.context.request.user)

or in case of a custom context:

class MyGraphQLView(GraphQLView):
    def get_context(self, request: HttpRequest, response: HttpResponse) -> Any:
        return {"example": 1}
 
 
@strawberry.type
class Query:
    @strawberry.field
    def example(self, info: strawberry.Info) -> str:
        return str(info.context["example"])

Here we are returning a custom context dictionary that contains only one item called "example".

Then we use the context in a resolver, the resolver will return "1" in this case.

get_root_value

get_root_value allows to provide a custom root value for your schema, this is probably not used a lot but it might be useful in certain situations.

Here’s an example:

class MyGraphQLView(GraphQLView):
    def get_root_value(self, request: HttpRequest) -> Any:
        return Query(name="Patrick")
 
 
@strawberry.type
class Query:
    name: str

Here we are returning a Query where the name is "Patrick", so we when requesting the field name we'll return "Patrick" in this case.

process_result

process_result allows to customize and/or process results before they are sent to the clients. This can be useful logging errors or hiding them (for example to hide internal exceptions).

It needs to return an object of GraphQLHTTPResponse and accepts the request and the execution results.

from strawberry.http import GraphQLHTTPResponse
from strawberry.types import ExecutionResult
 
 
class MyGraphQLView(GraphQLView):
    def process_result(
        self, request: HttpRequest, result: ExecutionResult
    ) -> GraphQLHTTPResponse:
        data: GraphQLHTTPResponse = {"data": result.data}
 
        if result.errors:
            data["errors"] = [err.formatted for err in result.errors]
 
        return data

In this case we are doing the default processing of the result, but it can be tweaked based on your needs.

render_graphql_ide

In case you need more control over the rendering of the GraphQL IDE than the graphql_ide option provides, you can override the render_graphql_ide method.

from strawberry.django.views import GraphQLView
from django.http import HttpResponse
from django.template.loader import render_to_string
 
 
class MyGraphQLView(GraphQLView):
    def render_graphql_ide(self, request: HttpRequest) -> HttpResponse:
        content = render_to_string("myapp/my_graphql_ide_template.html")
 
        return HttpResponse(content)

Async Django

Strawberry also provides an async view that you can use with Django 3.1+

from django.urls import path
 
from strawberry.django.views import AsyncGraphQLView
 
from api.schema import schema
 
urlpatterns = [
    path("graphql/", AsyncGraphQLView.as_view(schema=schema)),
]

You'd also need to add strawberry_django to the INSTALLED_APPS of your project, this is needed to provide the template for the GraphiQL interface.

Options

The AsyncGraphQLView accepts the following arguments:

Extending the view

We allow to extend the base AsyncGraphQLView , by overriding the following methods:

get_context

get_context allows to provide a custom context object that can be used in your resolver. You can return anything here, by default we return a dictionary with the request.

class MyGraphQLView(AsyncGraphQLView):
    async def get_context(self, request: HttpRequest, response: HttpResponse) -> Any:
        return {"example": 1}
 
 
@strawberry.type
class Query:
    @strawberry.field
    def example(self, info: strawberry.Info) -> str:
        return str(info.context["example"])

Here we are returning a custom context dictionary that contains only one item called "example".

Then we use the context in a resolver, the resolver will return "1" in this case.

get_root_value

get_root_value allows to provide a custom root value for your schema, this is probably not used a lot but it might be useful in certain situations.

Here’s an example:

class MyGraphQLView(AsyncGraphQLView):
    async def get_root_value(self, request: HttpRequest) -> Any:
        return Query(name="Patrick")
 
 
@strawberry.type
class Query:
    name: str

Here we are returning a Query where the name is "Patrick", so we when requesting the field name we'll return "Patrick" in this case.

process_result

process_result allows to customize and/or process results before they are sent to the clients. This can be useful logging errors or hiding them (for example to hide internal exceptions).

It needs to return an object of GraphQLHTTPResponse and accepts the request and the execution results.

from strawberry.http import GraphQLHTTPResponse
from strawberry.types import ExecutionResult
 
 
class MyGraphQLView(AsyncGraphQLView):
    async def process_result(
        self, request: HttpRequest, result: ExecutionResult
    ) -> GraphQLHTTPResponse:
        data: GraphQLHTTPResponse = {"data": result.data}
 
        if result.errors:
            data["errors"] = [err.formatted for err in result.errors]
 
        return data

In this case we are doing the default processing of the result, but it can be tweaked based on your needs.

encode_json

encode_json allows to customize the encoding of the JSON response. By default we use json.dumps but you can override this method to use a different encoder.

class MyGraphQLView(AsyncGraphQLView):
    def encode_json(self, data: GraphQLHTTPResponse) -> str:
        return json.dumps(data, indent=2)

render_graphql_ide

In case you need more control over the rendering of the GraphQL IDE than the graphql_ide option provides, you can override the render_graphql_ide method.

from strawberry.django.views import AsyncGraphQLView
from django.http import HttpResponse
from django.template.loader import render_to_string
 
 
class MyGraphQLView(AsyncGraphQLView):
    async def render_graphql_ide(self, request: HttpRequest) -> HttpResponse:
        content = render_to_string("myapp/my_graphql_ide_template.html")
 
        return HttpResponse(content)

Subscriptions

Subscriptions run over websockets and thus depend on channels . Take a look at our channels integraton page for more information regarding it.

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