`in_only_groups` doesn't match on group IDs about groupify HOT 4 CLOSED

What it should do is match the number of groups (as it does), but also LEFT OUTER JOIN on the group_memberships table again and filter on the group IDs to see if the total number of groups they're a member of equals the specific groups given.

Is there another way to solve that without the additional join?

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One more thought. This gets complicated with calling User.in_only_groups(group1, group2).as('role') because the role needs to be factored in on both joins when as is called.

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Yes, you're right. I noticed this problem before and fixed it in #58. It's been a busy few weeks and I haven't had a chance to release it.

IIRC my fix doesn't work with role filtering.

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@dwbutler OK, great. I'll close this issue.

from groupify.