old_contents: # -*- coding: utf-8 -*-
  from django.contrib import admin
  
  from opps.core.models import Source
  
  
  class SourceAdmin(admin.ModelAdmin):
      pass
  
  admin.site.register(Source, SourceAdmin)
  
new_contents: # -*- coding: utf-8 -*-
  from django.contrib import admin
  
  from opps.core.models import Source
  
  
  class SourceAdmin(admin.ModelAdmin):
      prepopulated_fields = {"slug": ("name",)}
  
  admin.site.register(Source, SourceAdmin)
  
subject: create slug source (prepopulated fields) based name