Look Behind the Curtain

A Python Zagreb meetup talk about why we should not be afraid of poking into someone else's code.

Transcript

1. Look behind the curtain Senko Rašić
5. “When the getDVRConversions is set to True it expires conversions automatically.” —paid support Proprietary software
6. Open Source
14. Sign in with Google *
 *authorized users only
15. from allauth.socialaccount.adapter import \
 DefaultSocialAccountAdapter class MyAdapter(DefaultSocialAccountAdapter): def is_open_for_signup(self, request): return False
16. from allauth.socialaccount.adapter import \
 DefaultSocialAccountAdapter class MyAdapter(DefaultSocialAccountAdapter): def is_open_for_signup(self, req, sociallogin): return False
17. from allauth.socialaccount.adapter import \
 DefaultSocialAccountAdapter class MyAdapter(DefaultSocialAccountAdapter): def is_open_for_signup(self, req, sociallogin): return False
18. Django Developer Tragedies AllAuth won’t log in without SocialAccount, but won’t create SocialAccount without signup.
19. We need to go deeper
20. allauth.socialaccount.views.SignupView
21. a.sa.providers.google.views.oauth2_login a.sa.providers.oauth2.views.OAuth2LoginView ↓ ↓ a.sa.providers.google.views.oauth2_callback a.sa.providers.oauth2.views.OAuth2CallbackView ↓ allauth.socialaccount.views.SignupView
22. class OAuth2CallbackView(OAuth2View): def dispatch(self, request): … login = self.adapter.complete_login(…) … return complete_social_login(request, login) ↓ # allauth.socialaccount.helpers def _complete_social_login(req, sociallogin): … if sociallogin.is_existing: … else: ret = _process_signup(req, sociallogin) ↓ # allauth.socialaccount.models class SocialLogin(object): @property def is_existing(self): return self.account.pk
24. # a.sa.provider.google.views class GoogleOAuth2Adapter(OAuth2Adapter): def complete_login(…): … login = self.get_provider(). \ sociallogin_from_response(…) ↓ # a.sa.providers.base class Provider(object): def sociallogin_from_response(…): … sociallogin.user = adapter.new_user(req, sociallogin) … ↓
26. # allauth.socialaccount.models class SocialLogin(object): @property def is_existing(self): return self.account.pk
29. # allauth.socialaccount.helpers def complete_social_login(request, sociallogin): assert not sociallogin.is_existing …
32. 千⾥里里之⾏行行，始於⾜足下 Debugging of thousand lines starts with a single step
33. Thank you! @senkorasic