Added GraphQL Playgrounds

[shreyas44]

Integrated GraphQL Playgrounds with the library

• Created a view to get GraphQL Playground view graphene_subscriptions.views.playground_view
• Created a template playgrounds.html based on https://github.com/prismagraphql/graphql-playground/blob/master/packages/graphql-playground-html/withAnimation.html
• Made sure the CSRF Cookie is sent with every request.
• Changed the GraphQlSubscriptionConsumer to return the errors field only if there are any errors. (Modified the tests to not throw an error when there is no errors field with a None value)

Resolves #9, uses GraphQL Playgrounds instead of GraphiQL which also supports subscriptions.

Let me know if you want me to update the README :)

[jaydenwindle]

@shreyas44 Thanks so much for the PR! This looks awesome. I'd love to merge this in :)

Can you update the README so that the getting started instructions mention how to set up the GraphQL playground view to test subscriptions?

[shreyas44]

@jaydenwindle I updated the README. Check it out and let me know if anything else needs to be changed!

[singlerider]

The instructions in @shreyas44's branch are still missing from the existing README, providing what seem to be a critical piece of the puzzle to get this working. What's the status of this?

[shreyas44]

Hey @singlerider! You can check out the master branch in my fork where I've merged this branch as well as the branch in #28. The fork is not published to Pypi though, so you would have to download it and add it directly from the repo.

[singlerider]

@shreyas44 thank you for the quick reply, but I'm still having all kind of trouble getting any implementation of Subscriptions working in Django. For example, I'm getting

TypeError: GraphqlSubscriptionConsumer() takes no arguments

From my project that's using both your fork and this main repository.

Do you have a sample project actually using this library that functions? I'll need to make sure I have the right dependency versions installed and most of these libraries are showing their age. I'm on Python 3.9.0 with Django 3.1.2 and Channels 2.4.0 (installed from master on GitHub).

[shreyas44]

@singlerider no problem! As for your problem, make sure it's path('graphql/', GraphqlSubscriptionConsumer) and not path('graphql/', GraphqlSubscriptionConsumer()). Also, could you try running it with Python 3.8 once cause I've been facing a lot of issues with 3.9 (not specific to Django or Django Subscriptions).

I don't have any public repository implementing this, unfortunately :(

[singlerider]

@shreyas44 No luck. I can't build your repo from git using pip. I'm going to move the conversation to your fork (shreyas44#7) and update back here if I get this running.