| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384 |
- """
- Built-in, globally-available admin actions.
- """
- from django.core.exceptions import PermissionDenied
- from django.contrib import messages
- from django.contrib.admin import helpers
- from django.contrib.admin.utils import get_deleted_objects, model_ngettext
- from django.db import router
- from django.template.response import TemplateResponse
- from django.utils.encoding import force_text
- from django.utils.translation import ugettext_lazy, ugettext as _
- def delete_selected(modeladmin, request, queryset):
- """
- Default action which deletes the selected objects.
- This action first displays a confirmation page whichs shows all the
- deleteable 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
- # Check that the user has delete permission for the actual model
- if not modeladmin.has_delete_permission(request):
- raise PermissionDenied
- using = router.db_for_write(modeladmin.model)
- # Populate deletable_objects, a data structure of all related objects that
- # will also be deleted.
- deletable_objects, perms_needed, protected = get_deleted_objects(
- queryset, opts, request.user, modeladmin.admin_site, using)
- # The user has already confirmed the deletion.
- # Do the deletion and return a None to display the change list view again.
- if request.POST.get('post'):
- if perms_needed:
- raise PermissionDenied
- n = queryset.count()
- if n:
- for obj in queryset:
- obj_display = force_text(obj)
- modeladmin.log_deletion(request, obj, obj_display)
- queryset.delete()
- 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
- if len(queryset) == 1:
- objects_name = force_text(opts.verbose_name)
- else:
- objects_name = force_text(opts.verbose_name_plural)
- if perms_needed or protected:
- title = _("Cannot delete %(name)s") % {"name": objects_name}
- else:
- title = _("Are you sure?")
- context = {
- "title": title,
- "objects_name": objects_name,
- "deletable_objects": [deletable_objects],
- 'queryset': queryset,
- "perms_lacking": perms_needed,
- "protected": protected,
- "opts": opts,
- 'action_checkbox_name': helpers.ACTION_CHECKBOX_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, current_app=modeladmin.admin_site.name)
- delete_selected.short_description = ugettext_lazy("Delete selected %(verbose_name_plural)s")
|
