python - Django request.user being inconsistent -

i have relatively override of save_model method so:

def save_model(self, request, obj, form, change):     if not change:         obj.created_by = request.user         obj.last_modified_by = request.user     else:         obj.last_modified_by = request.user     obj.save() 

when creating new record (not change), populates obj.created_by string of username, obj.last_modified_by string of user id. can fix using request.user.username instead of request.user, it's odd me inconsistently:

carl's user id 1.

in case you're wondering how created_by , last_modified_by designed in model, merely charfield's (not foreignkey's):

created_by          = models.charfield(blank=false, max_length=100, editable=false) last_modified_by    = models.charfield(blank=false, max_length=100, editable=false) 

why inconsistent?

you said yourself.

in case you're wondering how created_by , last_modified_by designed in model, merely charfield's (not foreignkey's):

but request.user actual user instance (not charfield). setting fields wrong thing.

you want obj.created_by = request.user.username.