Custom Actions in Admin

Actions allow administrators to perform tasks on multiple records at once, such as marking items as published or deleting them in bulk.

1. Defining Custom Actions:

   def make_published(modeladmin, request, queryset):
       queryset.update(status='published')
   make_published.short_description = 'Mark selected books as published'
   
   class BookAdmin(admin.ModelAdmin):
       actions = [make_published]
   
   admin.site.register(Book, BookAdmin)
   

   Key Points:

   • modeladmin is the instance of the admin class.
   • request is the HTTP request.
   • queryset is the selected set of objects.
2. Executing Admin Actions: When the admin user selects multiple records, they can choose an action from the dropdown and apply it to all selected objects.