dj_ep5_admin_lecture.py

from django.contrib import admin
from .models import Lecture

class LectureAdmin(admin.ModelAdmin):
    list_display = ('title','slug','video_url','description_length')
    list_display_link = ('slug')
    iist_diplay_editable = ('title','video_url')
    list_display_filter = ('title')
    list_display_search = ('title','description')
    
    def description_length(self,obj) :
        return len(self.obj.description)
    
admin.site.register(Lecture,LectureAdmin)