我有:
class Person(admin.ModelAdmin):
actions = ['delete_selected']
def delete_selected(modeladmin, request, queryset):
# Show confirmation page.
for obj in queryset:
obj.custom_delete()
我在那里留下的评论是我挣扎的地方。在执行自定义删除之前,我仍然想显示确认页面。
最佳答案
简短回答 :您应该覆盖 delete_queryset
[Django-doc] ,因为这封装了删除对象的真实逻辑。
您不应覆盖 delete_selected
。这个 Action 是 defined like [GitHub] :
def delete_selected(modeladmin, request, queryset): # ... # 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 # ... context = { # ... } 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) delete_selected.allowed_permissions = ('delete',) delete_selected.short_description = gettext_lazy("Delete selected %(verbose_name_plural)s")
这里的关键部分是此操作将执行适当的检查,但删除本身是通过调用完成的:
modeladmin.delete_queryset(request, queryset)
因此,使用以下命令覆盖
delete_queryset
就足够了:class PersonAdmin(admin.ModelAdmin):
actions = ['delete_selected']
def delete_queryset(self, request, queryset):
for obj in queryset:
obj.custom_delete()
一个
ModelAdmin
有一个 standard implementation for delete_queryset
[GitHub] :class ModelAdmin(BaseModelAdmin): # ... def delete_queryset(self, request, queryset): """Given a queryset, delete it from the database.""" queryset.delete()
关于django - 有没有办法覆盖 ModelAdmin 中的 delete_selected 方法但保持确认?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56450998/