Prevent duplicate rows in /users when filters applied #2400
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floehopper
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Oct 4, 2023
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Good work! LGTM 👍
One minor thing - the test names suggest that the problem is specific to multiple permissions on the SAME app, but the commit note / PR description doesn't mention that. I'm guessing that's just an omission in the commit note / PR description, but either way it would be nice to bring the two things into line.
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Thanks @floehopper! I'll clarify that in the commit note before merging. |
Trello: https://trello.com/c/i27MQaus This fixes an issue with duplication of a user in the table on /users (and the corresponding CSV export) when multiple permissions for the same application were selected in the filter. For example if a user had the "GDS editor" and "signon" permission for the "Transition" app and we selected both of those permissions in the filter drop down, this user would appear twice in table. The solution is to call `distinct` on the `User#with_permission` scope, which is in turn called by `UsersFilter#users`. I've decided to add a test case in both places to avoid a regression in `UsersFilter` in case it changes in the future. Note we have to add the `unscoped` method to `SupportedPermission` in the `User#with_permission` scope since `SupportedPermission` has an `order(:name)` `default_scope` and calling `distinct` on an order query is not supported by MySQL: Mysql2::Error: Expression #1 of ORDER BY clause is not in SELECT list, references column 'signon_test.supported_permissions.name' which is not in SELECT list; this is incompatible with DISTINCT
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Trello: https://trello.com/c/i27MQaus
This fixes an issue with duplication of a user in the table on /users (and the corresponding CSV export) when multiple permissions for the same application were selected in the filter.
For example if a user had the "GDS editor" and "signon" permission for the "Transition" app and we selected both of those permissions in the filter drop down, this user would appear twice in table.
The solution is to call
distincton theUser#with_permissionscope, which is in turn called byUsersFilter#users. I've decided to add a test case in both places to avoid a regression inUsersFilterin case it changes in the future.Note we have to add the
unscopedmethod toSupportedPermissionin theUser#with_permissionscope sinceSupportedPermissionhas anorder(:name)default_scopeand callingdistincton an ordered query is not supported by MySQL: