Multiple grades from a single link from an external tool.

[ashimpi]

Multiple grades from a single link from an external tool.

We have an external tool for Canvas where a user can click on a link to get to an assignment. However the student can then go to other assignments in the tool by continuing to do work there. Since we can only get the lis_result_sourcedid from the link that was clicked, how would I be able to post the grades for the other assignments that are in the students course links. e.g. There is a link to section 1.1.2 that is graded, the student completes that assignment and then moves on through the other sections in the external tool and also completes the assignment for section 1.1.5 without clicking the link in the course (thus I don't know the lis_result_sourcedid for it), the tool knows the grade and need to pass it back to Canvas, however the sourcedid for it is not going to be the same, tool knows the assignment id from when it was created. Any ideas on how to accomplish this? Is there an algorithm for calculating the sourced id? We are passign back the grades using LTI outcomes POX, however are open to using the API as well.

Anu

[pklove]

This would depend on your tool's navigation and how its linked from Canvas, but given you know the assignment ids, at the point where they would go to another assignment, can you simply link to the assignment in Canvas which would cause your tool to re-launch with that assignment's lis_result_sourcedid ?   I think you could just use .../courses/course_id/assignments/assignment_id (or, perhaps more correctly, you could use the API to get the assignment information .../api/v1/courses/course_id/assignments/assignment_id and get the html_url from there).

Or you could use the API to send the grade back, but it might not show as a submission (eg., see thje discussion at https://community.canvaslms.com/thread/23009-is-it-possible-to-use-the-submission-api-with-submissio... ).

[ashimpi]

I do know the course and assignment id's, however they are on my back end. If I were to relaunch the other assignments, wouldn't I need the user to be logged in and launching those (I would need a token)? At present the student simply launches a link. Is it possible to calculate the sourced id based on the key/secret that is already associated with the app, if so, it would make it much more straightforward using just vanilla LTI outcomes? I could use the submissions API as a teacher who can provide a token and then use it to send grades for the external tool as a grade without a submission, but am not sure if that will work.