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    <p>Ok so I think you're trying to go from auth.User.username to ShibUser to do this follow the ForeignKeys backwards:</p> <pre><code>user = User.objects.get(username=username) # for reverse relationships the foo_set is created by django enabling # reverse relationship. You can override this by providing a related_name shibuser = user.shibuser_set.get() # Alternative syntax shibuser = user.shibuser_set.all()[0] </code></pre> <p>From there you can get your ShibUser role. If More than one ShibUser can exist per User then you want to drop the index and will instead have a queryset of ShibUser objects to work with.</p> <p>If only one ShibUser object can exist per User you should make this a OneToOneField instead of a foreignkey and things become simpler:</p> <pre><code>shibuser = user.shibuser </code></pre> <p>Finally you can even start from the ShibUser model and work with it:</p> <pre><code>shibuser = ShibUser.objects.get(auth_user__username=username) # Or if you already had the User object instance shibuser = ShibUser.objects.get(auth_user=user) </code></pre> <p>Keep in mind several exceptions can be raised around this depending on the approach: the User could not exist or the ShibUser for the given User could not exist. Perhaps more than one ShibUser could be related to a single user and therefore the .get() calls will result in a <code>MultipleObjectsReturned</code> exception. Your schema isn't very tight to your use case it sounds like so I would probably improve that with a OneToOneField</p>
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    1. COThis did work, but in my form as you see I already have user object so instead of `user = User.objects.get(username=username)` can I use use that object?
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    2. COI think you might be able to do the same with just `user.shib_user`. Or, try using [related name](https://docs.djangoproject.com/en/dev/ref/models/fields/#django.db.models.ForeignKey.related_name).
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    3. CO@find-missing-semicolon for sure if you already have the User object you can use it. I'm going to edit a third way to do this lookup as well
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