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