admin.py

from django.contrib import admin
from apps.trend.models import Trendy
 
class TrendyAdmin(admin.ModelAdmin):
 
    exclude =('user', )
    list_display = ('name', 'created')
    list_filter  = ('name', )
 
    def save_model(self, request, obj, form, change):
        if not change:
            obj.user = request.user
        obj.save()
 
admin.site.register(Trendy, TrendyAdmin)

models.py

from django.db import models
from django.contrib.auth.models import User
 
class Trendy(models.Model):
    name = models.CharField(max_length=128, help_text='Trend display name')
    user = models.ForeignKey(User)
    created = models.DateTimeField(auto_now_add=True, help_text=help_created)
    modified = models.DateTimeField(auto_now_add=True, help_text=help_modified)