Django：使用相关模型中的 archive_index 和 date_field
你好（请原谅我丑陋的英语：p），
想象一下这两个简单的模型：
from django.contrib.contenttypes import generic
from django.db import models
class SomeModel(models.Model):
content_type = models.ForeignKey(ContentType)
object_id = models.PositiveIntegerField(_('object id'))
content_object = generic.GenericForeignKey('content_type', 'object_id')
published_at = models.DateTimeField('Publication date')
class SomeOtherModel(models.Model):
related = generic.GenericRelation(SomeModel)
我想将 archive_index 通用视图与 SomeOtherModel 一起使用，但它不起作用：
from django.views.generic.date_based import archive_index
archive_index(request, SometherModel.objects.all(), 'related__published_at')
错误来自第 28 行的 archive_index （使用 django 1.1 ）：
date_list = queryset.dates(date_field, 'year')[::-1]
提出的例外是：
SomeOtherModel has no field named 'related__published_at'
您有解决办法吗？
非常感谢 ：）
Hello (please excuse me for my ugly english :p),
Imagine these two simple models :
from django.contrib.contenttypes import generic
from django.db import models
class SomeModel(models.Model):
content_type = models.ForeignKey(ContentType)
object_id = models.PositiveIntegerField(_('object id'))
content_object = generic.GenericForeignKey('content_type', 'object_id')
published_at = models.DateTimeField('Publication date')
class SomeOtherModel(models.Model):
related = generic.GenericRelation(SomeModel)
I would like to use the archive_index generic view with SomeOtherModel, but it doesn't work :
from django.views.generic.date_based import archive_index
archive_index(request, SometherModel.objects.all(), 'related__published_at')
The error comes from archive_index at line 28 (using django 1.1) :
date_list = queryset.dates(date_field, 'year')[::-1]
The raised exception is :
SomeOtherModel has no field named 'related__published_at'
Have you any idea to fix it ?
Thank you very much :)
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通过深入研究 Django 源代码，通用视图
archive_index似乎不支持GenericRelation相关字段。这是因为查询集方法
dates不支持泛型关系。考虑将此作为错误/功能请求提交到 Django 错误跟踪器上。From digging through the Django source code, the generic view
archive_indexdoes not appear to support related fields that areGenericRelations.This is because the queryset method
datesdoes not support generic relations. Consider filing this as a bug / feature request on the Django bug tracker.