Django admin panel app model list_display not showing

As a matter of course, the administrator design just shows what is come back from the item’s Unicode work. To display something else you need to create a custom admin form in app/admin.py.

list_display = ('first_name', 'last_name')

You should include admin.site.register outside the class :

#admin.py

from django.contrib import admin
from django.contrib.auth.models import Group
from .models import tilessize

/* Unregister Group */
admin.site.unregister(Group)

/* Changing the title of Django Admin */
admin.site.site_header = "Tiles Visualiser"

class listAllSizes(admin.ModelAdmin):
    list_display = ('tiles_width','tiles_height','tiles_length','size_name','size_user_role','size_status','latitude','longitude')

admin.site.register(tilessize,listAllSizes)