Use OAuth2 prompt
to force login/account selection by provider
#1270
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Closes #1269.
This PR forces user's to login or select a logged in account whenever they hit the datalab login button. This is a requirement for using datalab on multi-user machines, as otherwise when one user logs out, the login button will automatically use the stored information according to the oauth provider.
Unfortunately, I had to vendor the flask-dance blueprints in order to expose the setting I needed, but these very rarely change (and indeed one of them was contributed upstream by me anyway).