Django管理员默认过滤器

Question

我知道我已经设法做到这一点,但不记得我怎么也找不到任何关于这个的文件..

如何在管理员的对象列表视图中默认应用过滤器？

我有一个应用程序列出引号,这些引号具有状态(例如:接受,拒绝,暂停......).

我希望过滤器设置为status ='accepted'默认为..

Answer 1

更可重用的方法:

class DefaultFilterMixIn(admin.ModelAdmin):
    def changelist_view(self, request, *args, **kwargs):
        from django.http import HttpResponseRedirect
        if self.default_filters:
            try:
                test = request.META['HTTP_REFERER'].split(request.META['PATH_INFO'])
                if test and test[-1] and not test[-1].startswith('?'):
                    url = reverse('admin:%s_%s_changelist' % (self.opts.app_label, self.opts.module_name))
                    filters = []
                    for filter in self.default_filters:
                        key = filter.split('=')[0]
                        if not request.GET.has_key(key):
                            filters.append(filter)
                    if filters:                        
                        return HttpResponseRedirect("%s?%s" % (url, "&".join(filters)))
            except: pass
        return super(DefaultFilterMixIn, self).changelist_view(request, *args, **kwargs)            

然后在ModelAdmin上定义default_filters:

class YourModelAdmin(DefaultFilterMixIn):
    ....
    default_filters = ('snapshot__exact=0',)

Answer 2

最后,这就是我想要的:

def changelist_view(self, request, extra_context=None):
    if not request.GET.has_key('status__exact'):
        q = request.GET.copy()
        q['status__exact'] = '1'
        request.GET = q
        request.META['QUERY_STRING'] = request.GET.urlencode()
    return super(SoumissionAdmin,self).changelist_view(request, extra_context=extra_context)

另一种方式,使用admin类中的queryset方法不起作用.实际上它会对结果进行过滤,但会使过滤器功能失效.

我发现的解决方案也不完美,使用它来选择"全部/过滤器"是不可能的.在我的情况下,它不是戏剧性的,但它会很好,但是......

Answer 3

您可以覆盖查询集

class QuoteAdmin(admin.ModelAdmin):
    def get_queryset(self, request):
        return super(QuoteAdmin,self).get_queryset(request).filter(status="accepted")

但是,通过覆盖查询集,您将无法查看没有"已接受"状态的引号.

或者,您可以链接到以下URL,将过滤器添加到GET参数.

/admin/myapp/quote/?status=accepted

Answer 4

我用支持'all'解决了这个问题.

在models.py中:

STATUSES_CHOICE = (
    ('0', 'Active'),
    ('1', 'Deactive'),
    ('2', 'Suspended'),
)

class Client(models.Model):
    ...
    status = models.IntegerField(verbose_name=_('Status'),
                                 default=0,
                                 db_index=True)

在admin.py中:

class StatusAdminFilter(SimpleListFilter):
    title = _('Status')
    parameter_name = 'status'
    all_param_value = 'all'

    def lookups(self, request, model_admin):
        return STATUSES_CHOICE

    def queryset(self, request, queryset):
        status = self.value()
        try:
            return (queryset if status == self.all_param_value else
                    queryset.filter(status=int(status)))
        except ValueError:
            raise Http404

    def choices(self, cl):
        yield {'selected': self.value() == self.all_param_value,
               'query_string': cl.get_query_string(
                   {self.parameter_name: self.all_param_value}, 
                   [self.parameter_name]),
               'display': _('All')}
        for lookup, title in self.lookup_choices:
            yield {'selected': self.value() == lookup,
                   'query_string': cl.get_query_string(
                       {self.parameter_name: lookup}, []),
                   'display': title}


class ClientAdmin(admin.ModelAdmin):
    list_filter = (StatusAdminFilter,)

    def changelist_view(self, request, extra_context=None):
        if not request.GET.has_key('status'):
            q = request.GET.copy()
            q['status'] = '0'  # default value for status
            request.GET = q
            request.META['QUERY_STRING'] = request.GET.urlencode()
        return super(ClientAdmin, self).changelist_view(
            request, extra_context=extra_context)

Answer 5

简洁干净的解决方案.单击更改列表视图时,可以使用"全部"选项.

    def changelist_view(self, request, extra_context=None):
        if not request.META['QUERY_STRING'] and \
            not request.META.get('HTTP_REFERER', '').startswith(request.build_absolute_uri()):
            return HttpResponseRedirect(request.path + "?status__exact=1")
        return super(YourModelAdmin,self).changelist_view(request, extra_context=extra_context)