Cannot use UpdateIssue to remove all issue assignees

[lily-mara]

Since UpdateIssueOptions defines AssigneeIDs as a []int, and marks it as omitempty, it is omitted from the JSON request if an empty array is passed into it. The Gitlab API docs describe the field as follows:

The ID of the user(s) to assign the issue to. Set to 0 or provide an empty value to unassign all assignees.

Based on the current definition of UpdateIssueOptions, it is impossible to unassign all assignees. You cannot remove the omitempty item, or every call to UpdateIssue will remove all issue assignees. if you want to support this, I think there needs to be a separate method.

[svanharmelen]

Thanks for the report @natemara! Did you also try to give it a []int{0} as value? No idea, but maybe worth checking...

[svanharmelen]

Hi @natemara! Did you have a chance to test this, and so is this still an issue?

[0xmohit]

Specifying []int{0} as value does remove the assignee.

[svanharmelen]

Then I think the only way to solve this is by making this a *[]int, but I must admit that feels a bit nasty.

[no0by5]

The same problem applys to labels. You can't remove them by setting it to an emtpy slice, but if you use []string{""} it works.

[svanharmelen]

PR #1294 is a nasty breaking change, but it does fix this issue...