在django中将request.POST数据绑定到表单时出现延迟

Question

当尝试将 request.POST 数据绑定到表单时，我遇到了大约 20.-30 秒的无法解释的延迟：

    CompanyFormset = modelformset_factory(Company, form=EditCompanyForm, extra=0)

    if request.method == 'POST':
        formset = CompanyFormset(request.POST)
        if formset.is_valid():
            formset.save()

它只发生在一台服务器上，无论我使用开发服务器还是 mod_wsgi。当在我的开发计算机上尝试时，一切都运行得足够快。如果我尝试通过手动分配值来保存模型，它应该会很快。

延迟只发生在这条线上：

formset = CompanyFormset(request.POST)

..我不知道什么会导致它或在哪里寻找问题原因。

有什么建议吗？

这也是模型：

class Company(models.Model):
name = models.CharField(_('name'),blank=True, max_length=200)
type_of_corporation = models.CharField(_('type of organization'),blank=True, max_length=100)
tax_number = models.CharField(_('tax number'),blank=True, max_length=100)
created_at = models.DateTimeField(auto_now_add = True)
updated_at = models.DateTimeField(auto_now = True)
logo = models.FileField(_('logo'),upload_to='bex/logos', blank=True, null=True)
description = models.TextField(_('description'),blank=True)
street = models.CharField(_('street'),blank=True, max_length=100)
city = models.CharField(_('city'),blank=True, max_length=100)
zip = models.CharField(_('zip'),blank=True, max_length=50)
region = models.CharField(_('region'),blank=True, max_length=100)
COUNTRIES = (
    ('Croatia', 'Croatia'),
    ('Slovenia', 'Slovenia'),
)
country = models.CharField(_('country'),max_length=20, choices=COUNTRIES)
telephone = models.CharField(_('telephone'),blank=True, max_length=20)
fax = models.CharField(_('fax'),blank=True, max_length=20)
email = models.EmailField(_('email'),blank=True)
website = models.URLField(_('website'),null=True, blank=True, verify_exists=False)
representing_person = models.CharField(_('representing person'), blank=True, max_length=100)
owner = models.ForeignKey(User, blank=True, null=True, verbose_name=_('owner'), related_name='company_owner')
owner_approved = models.BooleanField(blank=True)
company_approved = models.BooleanField(default=True)
business_category = models.ForeignKey(BusinessCategory, blank=True, null=True, verbose_name=_('business category'))
subscription_date = models.DateTimeField(_('subscription date'),blank=True, null=True)
score = models.IntegerField(null=True, blank=True)
votes = models.IntegerField(null=True, blank=True)

""" company data needs to have ratings, comments, category and business tags """

class Admin:
    list_display = ('',)
    search_fields = ('',)
    save_as = True

class Meta:
    verbose_name = _('Company')
    verbose_name_plural = _('Companies')


def rating_allowed(self):

    if not self.subscription_date:
        try:
            user = User.objects.get(id=self.owner.id)
            if (datetime.today() - user.date_joined).days < 30:
                rating_allowed = True
        except:
            rating_allowed = False
    else:
        if (datetime.today() - self.subscription_date).days < 365:
            rating_allowed = True
        else:
            rating_allowed = False
    self.rating_allowed = rating_allowed
    return self.rating_allowed

def get_absolute_url(self):
    return "/companies/%i/" % self.id

def __unicode__(self):
    return self.name

Answer 1

模型中一切看起来都很好。您可以尝试出色的 django 调试工具栏，它会报告时间，并可以帮助您确定它是什么花了这么长时间。