89 lines
3.2 KiB
Python
89 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.utils import get_deleted_objects, model_ngettext
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from django.core.exceptions import PermissionDenied
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from django.db import router
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from django.template.response import TemplateResponse
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from django.utils.encoding import force_text
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from django.utils.translation import ugettext as _, ugettext_lazy
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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 whichs shows all the
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deleteable 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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# Check that the user has delete permission for the actual model
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if not modeladmin.has_delete_permission(request):
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raise PermissionDenied
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using = router.db_for_write(modeladmin.model)
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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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deletable_objects, model_count, perms_needed, protected = get_deleted_objects(
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queryset, opts, request.user, modeladmin.admin_site, using)
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# The user has already confirmed the deletion.
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# Do the deletion and return a None to display the change list view again.
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if request.POST.get('post'):
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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 = force_text(obj)
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modeladmin.log_deletion(request, obj, obj_display)
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queryset.delete()
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modeladmin.message_user(request, _("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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# Return None to display the change list page again.
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return None
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if len(queryset) == 1:
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objects_name = force_text(opts.verbose_name)
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else:
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objects_name = force_text(opts.verbose_name_plural)
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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 = dict(
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modeladmin.admin_site.each_context(request),
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title=title,
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objects_name=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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)
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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(request, modeladmin.delete_selected_confirmation_template or [
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"admin/%s/%s/delete_selected_confirmation.html" % (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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], context)
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delete_selected.short_description = ugettext_lazy("Delete selected %(verbose_name_plural)s")
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