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venv/Lib/site-packages/django/contrib/admin/actions.py

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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)