Django视图筛选器按日期开始

Question

我有一个这样的模型标签：

date_realization = models.DateField(_('Realised in'),
                                     default=timezone.now)

然后是这样一个网址：

^{pr2}$

当我发送url时，如下所示：

www.mondomaine.com/articles/date/2016-01

我的日期实现字段是这样的：

2016-01-13

而且我要做的是返回所有具有此日期的文章。

所以我尝试了分类，但是这里的行为有点不同。 这就是我要做的：

class DateEntriesView(ContextSourcesMixin, BaseArticleView, BaseArticleListView):
model = Article
context_object_name = 'article_list'
template_name = 'base_templates/template_press.html'
_date_realization = None
paginate_by = None
view_url_name = 'djangocms_press:articles-date'

def get(self, *args, **kwargs):
    # submit object to cms toolbar to get correct language switcher behavior
    if hasattr(self.request, 'toolbar'):
        self.request.toolbar.set_object(self.date_realization)
    return super(DateEntriesView, self).get(*args, **kwargs)

@property
def date_realization(self):
    if not self._date_realization:
        try:
            date_realization_qs = Article.objects.active_translations(
                get_language(),
                date_realization__startswith=self.kwargs['daterealization']
            )

            self._date_realization = date_realization_qs.latest('pk')
        except Article.DoesNotExist:
            raise Http404("Article does not exist for this site")
    return self._date_realization

def get_queryset(self):
    qs = super(DateEntriesView, self).get_queryset()
    if 'date_realization' in self.kwargs:
        qs = qs.filter(date_realization__pk=self.date_realization.pk)
    return qs

def get_context_data(self, **kwargs):
    kwargs['date_realization'] = self.date_realization
    return super(DateEntriesView, self).get_context_data(**kwargs)

但我收到了一条例外信息：

Exception Type: FieldError at /en/press/date/2016-01/

Exception Value: Relation fields do not support nested lookups

因此，我觉得卡住了。在

编辑：

嗯，模型文章很长

@version_controlled_content
@python_2_unicode_compatible
class Article(ModelMeta, TranslatableModel):
taints_cache = True

"""
Press article element,
"""
date_created = models.DateTimeField(auto_now_add=True)
date_modified = models.DateTimeField(auto_now=True)
date_realization = models.DateField(_('Realised in'),
                                     default=timezone.now)
image = FilerImageField(verbose_name=_('Featured image'), blank=True,
                             null=True,
                             on_delete=models.SET_NULL,
                             related_name='image_press_article',
                             help_text=_('Set if the article will be featured'))

sources = models.ManyToManyField(ArticleSource, verbose_name=_('Source'),
                                    blank=False, null=True, related_name='sources_press_article')

regions = models.ManyToManyField(Country, verbose_name=_('Country of the article'),
                                 blank=True, null=True,
                                 related_name='regions_press_article')

global_regions = models.BooleanField('Global', default=False)

featureArticle = models.BooleanField(_('Feature'), help_text=_('Feature this article'), default=False)

sites = models.ManyToManyField(Site, verbose_name=_('Sites'), blank=True,
                                                    null=True,
                                                    help_text=_('Select sites in which show the project.'))

article_url = models.CharField(_('Article Url'), max_length=310, blank=False,
                                   help_text=_('Use to link to the original source'))

countries_displayed_in = models.ManyToManyField(
    Country,
    verbose_name=_('Countries displayed in'),
    blank=True,
    null=True,
    related_name='displayed_in_press_article',
    help_text='Select the countries in which this project will be visible.'
    'If not selected, the project will be visible in all countries otherwise it will be'
    'visible only for users that are located in the countries selected')

translations = TranslatedFields(
    title=models.CharField(_('title'), max_length=510),
    slug=models.SlugField(_('slug'), blank=False, db_index=True, max_length=300),
    description=HTMLField(_('article description if featured'), default='', blank=True,
                          configuration='HTMLFIELD_CKEDITOR_SETTINGS_CONTENT'),

    meta_description=models.TextField(verbose_name=_('article meta description'),
                                      blank=True, default=''),
    meta_keywords=models.TextField(verbose_name=_('article meta keywords'),
                                   blank=True, default=''),
    meta_title=models.CharField(verbose_name=_('article meta title'),
                                help_text=_('used in title tag and social sharing'),
                                max_length=255,
                                blank=True, default=''),
    meta={'unique_together': (('language_code', 'slug'),)}
)

objects = ProjectManager()

_metadata = {
    'title': 'get_title',
    'description': 'get_description',
    'keywords': 'get_keywords',
    'locale': None,
    'image': 'get_image_full_url',
    'published_time': 'date_created ',
    'modified_time': 'date_modified',
    # Handle the get_absolute_url in the view to have access to the request
    # and so, to the current_app namespace instance
    # 'url': 'get_absolute_url',
}

def country(self):
    return "\n".join(([p.name for p in self.regions.all()]))

def source(self):
    return "\n".join([p.name for p in self.sources.all()])

def get_title(self):
    title = self.safe_translation_getter('meta_title', any_language=True)
    if not title:
        title = self.safe_translation_getter('title', any_language=True)
    return title.strip()

def get_keywords(self):
    return self.safe_translation_getter('meta_keywords').strip().split(',')

def get_description(self):
    description = self.safe_translation_getter('meta_description', any_language=True)
    if not description:
        description = self.safe_translation_getter('description', any_language=True)
    return escape(strip_tags(description)).strip()

def get_image_full_url(self):
    if self.image:
        return self.image.url
    return ''

class Meta:
    verbose_name = _('Press article')
    verbose_name_plural = _('Press articles')
    get_latest_by = 'date_realization'

def __str__(self):
    title = self.safe_translation_getter('title', any_language=True)
    return title if title is not None else '(not translated)'

def save(self, *args, **kwargs):
    super(Article, self).save(*args, **kwargs)
    main_lang = self.get_current_language()
    for lang in self.get_available_languages():
        self.set_current_language(lang)
        if not self.slug and self.title:
            self.slug = slugify(self.title)
    self.set_current_language(main_lang)
    self.save_translations()

def get_slug(self):
    return self.safe_translation_getter(
        'slug',
        language_code=get_language(),
        any_language=False)

Answer 1

相反，我将通过urlconf解析日期的月份/年份。在

 url(r'^date/(?P<date_year>[0-9]+)-(?P<date_month>[0-9]+)/$', 
                     DateEntriesView.as_view(), name='articles-date'),

然后在你看来：

^{pr2}$

请记住，如果您试图从self.kwargs调用一个不存在的键，您将得到一个错误。也许最好调用self.kwargs.get('date_month',datetime.date().month)使其默认值为current month（以及对year调用相同的值）。在