graphene-file-upload is a drop in replacement for the the GraphQL view in Graphene for Django, and for Flask-Graphql.
It supports multi-part file uploads that adhere to the Multipart Request Spec.
It currently supports Python 2.7 and 3.4+.
pip install graphene-file-upload
To add an upload type to your mutation, import and use Upload. Upload is a scalar type.
from graphene_file_upload.scalars import Upload
class UploadMutation(graphene.Mutation):
class Arguments:
file = Upload(required=True)
success = graphene.Boolean()
def mutate(self, info, file, **kwargs):
# do something with your file
return UploadMutation(success=True)
To use, import the view, then add to your list of urls (replace previous GraphQL view).
from graphene_file_upload.django import FileUploadGraphQLView urlpatterns = [ url(r'^graphql', FileUploadGraphQLView.as_view(graphiql=True)), ]
Note that flask-graphql version <2.0 is not supported. At the time of writing this README, you must install flask-graphql with pip install --pre flask-graphql
Simply import the modified view and create a new url rule on your app:
from graphene_file_upload.flask import FileUploadGraphQLView
app.add_url_rule(
'/graphql',
view_func=FileUploadGraphQLView.as_view(
...
)
)
https://flask.palletsprojects.com/en/1.1.x/testing/#the-testing-skeleton
# Create a fixture using the file_graphql_query helper and `client` fixture.
import os
import json
import tempfile
from flaskr import flaskr
import pytest
from graphene_file_upload.flask.testing import file_graphql_query
@pytest.fixture
def client():
db_fd, flaskr.app.config['DATABASE'] = tempfile.mkstemp()
flaskr.app.config['TESTING'] = True
with flaskr.app.test_client() as client:
with flaskr.app.app_context():
flaskr.init_db()
yield client
os.close(db_fd)
os.unlink(flaskr.app.config['DATABASE'])
@pytest.fixture
def client_query(client):
def func(*args, **kwargs):
return file_graphql_query(*args, **kwargs, client=client)
return func
# Test your query using the client_query fixture
def test_some_query(client_query):
test_file = SimpleUploadedFile(name='test.txt', content=file_text.encode('utf-8'))
response = client_query(
'''
mutation testMutation($file: Upload!) {
myUpload(fileIn: $file) {
ok
}
}
''',
op_name='testMutation'
files={'file': test_file},
)
content = json.loads(response.content)
assert 'errors' not in content
Writing test using django's test client
To use pytest define a simple fixture using the query helper below
# Create a fixture using the file_graphql_query helper and `client` fixture from `pytest-django`.
import json
import pytest
from graphene_file_upload.django.testing import file_graphql_query
@pytest.fixture
def client_query(client):
def func(*args, **kwargs):
return file_graphql_query(*args, **kwargs, client=client)
return func
# Test your query using the client_query fixture
def test_some_query(client_query):
test_file = SimpleUploadedFile(name='test.txt', content=file_text.encode('utf-8'))
response = client_query(
'''
mutation testMutation($file: Upload!) {
myUpload(fileIn: $file) {
ok
}
}
''',
op_name='testMutation'
files={'file': test_file},
)
content = json.loads(response.content)
assert 'errors' not in content
Your endpoint is set through the GRAPHQL_URL attribute on GraphQLFileUploadTestCase. The default endpoint is GRAPHQL_URL = “/graphql/”.
import json
from graphene_file_upload.django.testing import GraphQLFileUploadTestCase
class MutationTestCase(GraphQLFileUploadTestCase):
def test_some_mutation(self):
test_file = SimpleUploadedFile(name='test.txt', content=file_text.encode('utf-8'))
response = self.file_query(
'''
mutation testMutation($file: Upload!) {
myUpload(fileIn: $file) {
ok
}
}
''',
op_name='testMutation',
files={'file': test_file},
)
# This validates the status code and if you get errors
self.assertResponseNoErrors(response)
If you'd like to contribute, please run the test suite prior to sending a PR.
In order to run the testing environment, create a virtual environment, install tox, and run the tox commands:
$ python3 -m venv venv
$ source venv/bin/activate
$ make install
# You may have to deactivate and reactivate to have access to the tox command,
# depending on your system.
# Run the test suite with the versions of python you have installed
$ tox
# Alternatively, if you're using something like pyenv and can easily install
# Multiple versions of python, then try running the following command
$ tox
# If for some reason you need to recreate the tox environment (e.g. a new
# dependency has been added since you last ran it, add the -r flag to the
# tox command)
$ tox -r {...additional flags...}
Check out pyenv if you'd like a simple way of installing multiple python versions to test out.
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