Getting user_id when using client_credentials Oauth2 process

[atlig17]

Hi everyone,

I am developing a tool for Canvas that uses LTI1.3. I have implemented the client_credentials process for my app, however the client_credentials process does not give me any way to identify the user that started the request.

I would like my app to receive user info (just name or id), and list their classes and send grades and create assignments, etc.

How is that done with client_credentials or another LTI1.3 compliant manner?

Great thanks to this developer community, it has been fantastic for developing this webapp.

[atlig17]

Additionally I'd like to ask if there have been any updates on when Canvas will release LTI1.3 out of beta and implement OpenID login for example?

[william_diehl]

We pass the course_id and user_id as custom parameters (defined under "Additional Settings" when setting up the developer key in Canvas). We also pass the instance URL as we couldn't find a reliable way of getting that from the handshake either (the authentication process gives us the main canvas.instructure.com URL instead of the instance hosting the developer key, which seems odd to me).

userId=$User.id
baseUrl=$Canvas.api.baseUrl
courseId=$Canvas.course.id