Role Assignment: Able to Attempt to Assign the Same Role to the Same User Multiple Times

[eaquigley]

Discovered during a demo that a user can assign the same role to a user multiple times. An error message appears but it says, "an error has occurred, please contact support". Post 4.0, we should make the messaging better and not allow a user to do this.

[eaquigley]

• Need functionality to prevent a user from being assigned the same role twice for a dataverse, dataset, or file
• Need an error message that appears within the role assigment pop up
• Error message should say, "(insert user name) has already been assigned this role for this (insert dataverse, dataset, or file name)"

[jggautier]

This issue, especially the second and third points in an earlier comment in this GitHub issue, is related to what happened recently with a Dataverse collection administrator in the Harvard Dataverse Repository. The administrator kept trying to assign a role to a user and didn't realize that the user already had the role. (See the support ticket conversation.) The error message, which isn't in the popup but above the table in the Users/Groups panel, reads that the role could not be assigned to the user for the Dataverse collection.

I think that first point, about needing "functionality to prevent a user from being assigned the same role twice for a dataverse, dataset, or file" is already fixed. As far as I can tell, a user can't be assigned the same role in the same Dataverse collection, dataset, or file more than once.

Edit: Hmm maybe that's why @scolapasta edited the issue title from "Able to assign..." to "Able to attempt to assign"

[pdurbin]

Same bug report but via API:

• Assigning role twice via API causes server error 500 #9729

[pdurbin]

Closing in favor of this issue:

• Assigning role twice via API causes server error 500 #9729