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- """
- Built-in, globally-available admin actions.
- """
- from django.contrib import messages
- from django.contrib.admin import helpers
- from django.contrib.admin.decorators import action
- from django.contrib.admin.utils import model_ngettext
- from django.core.exceptions import PermissionDenied
- from django.template.response import TemplateResponse
- from django.utils.translation import gettext as _, gettext_lazy
- @action(
- permissions=['delete'],
- description=gettext_lazy('Delete selected %(verbose_name_plural)s'),
- )
- def delete_selected(modeladmin, request, queryset):
- """
- Default action which deletes the selected objects.
- This action first displays a confirmation page which shows all the
- deletable objects, or, if the user has no permission one of the related
- childs (foreignkeys), a "permission denied" message.
- Next, it deletes all selected objects and redirects back to the change list.
- """
- opts = modeladmin.model._meta
- app_label = opts.app_label
- # Populate deletable_objects, a data structure of all related objects that
- # will also be deleted.
- deletable_objects, model_count, perms_needed, protected = modeladmin.get_deleted_objects(queryset, request)
- # The user has already confirmed the deletion.
- # Do the deletion and return None to display the change list view again.
- if request.POST.get('post') and not protected:
- if perms_needed:
- raise PermissionDenied
- n = queryset.count()
- if n:
- for obj in queryset:
- obj_display = str(obj)
- modeladmin.log_deletion(request, obj, obj_display)
- modeladmin.delete_queryset(request, queryset)
- modeladmin.message_user(request, _("Successfully deleted %(count)d %(items)s.") % {
- "count": n, "items": model_ngettext(modeladmin.opts, n)
- }, messages.SUCCESS)
- # Return None to display the change list page again.
- return None
- objects_name = model_ngettext(queryset)
- if perms_needed or protected:
- title = _("Cannot delete %(name)s") % {"name": objects_name}
- else:
- title = _("Are you sure?")
- context = {
- **modeladmin.admin_site.each_context(request),
- 'title': title,
- 'objects_name': str(objects_name),
- 'deletable_objects': [deletable_objects],
- 'model_count': dict(model_count).items(),
- 'queryset': queryset,
- 'perms_lacking': perms_needed,
- 'protected': protected,
- 'opts': opts,
- 'action_checkbox_name': helpers.ACTION_CHECKBOX_NAME,
- 'media': modeladmin.media,
- }
- request.current_app = modeladmin.admin_site.name
- # Display the confirmation page
- return TemplateResponse(request, modeladmin.delete_selected_confirmation_template or [
- "admin/%s/%s/delete_selected_confirmation.html" % (app_label, opts.model_name),
- "admin/%s/delete_selected_confirmation.html" % app_label,
- "admin/delete_selected_confirmation.html"
- ], context)
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