How to attach logged-in user automatically to a model instance in Django Admin?

I’m working on a Django app that has a Members model related to the built-in User class from django.contrib.auth.models. It looks like this:

class Members(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    member_image = models.ImageField(upload_to='unknown')
    member_position = models.CharField(max_length=255)
    ...

The problem is: when I add a member_image in the admin, I also have to manually select the user. That doesn’t make sense to me because I want the logged-in user to be automatically detected and set as the user.

I tried something like this:

class Members(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE, default=request.user.id)

And then, in the admin, I removed the user field so that it doesn’t have to be selected manually:

class MembersAdmin(admin.ModelAdmin):
    fields = ('member_image', 'member_position', ...)

My goal: If the user field isn’t explicitly set in the admin, it should default to the currently logged-in user.

But since request isn’t available outside views.py, this doesn’t work.

I’ve also tried solutions from:

• Access session / request information outside of views in Django
• Accessing request.user outside views.py
• Django: How can I get the logged user outside of view request?

but I still haven’t figured it out.

How can I set the logged-in user automatically in this model/admin setup?

Modify MembersAdmin save_model method and attach request.user to the object prior to saving.

class MembersAdmin(admin.ModelAdmin):
    fields = ('member_image', 'member_position', ...)
    
    def save_model(self, request, obj, form, change):
        obj.user = request.user
        super().save_model(request, obj, form, change)