Question

使用视图更新列表中的模型字段时出现问题。更新仅在列表中的第一项中运行，但在其他项中不运行，但如果我在shell中运行，则更新所有对象。

models.py

class Contrato(models.Model):

nome = models.CharField(u'Nome/Identificação', max_length=200)
num = models.CharField(u'Número', max_length=200, blank=True, null=True)
data_inicio = models.DateField(u'Data do início')
data_fim = models.DateField(u'Data do fim', editable=False, blank=True, null=True)
progress = models.IntegerField(u'progresso',editable=False, max_length=100, blank=True, null=True)

...

views.py

def index(request):

vigentes = Contrato.objects.all()
vigentes_total = Contrato.objects.filter(status='0').order_by('nome').count() 

h = datetime.date.today()

print vigentes

for v in vigentes:

    d = v.data_fim - v.data_inicio
    dif = h - v.data_inicio
    v.progress = int((float(dif.days) / float(d.days))*100)
    v.save()


template = loader.get_template('contratos/index.html')
context = RequestContext(request, {
'vigentes': vigentes,
})

if not request.user.is_authenticated():
    return HttpResponse("You are not logged in.")

else:       
    return HttpResponse(template.render(context))

有什么想法解决这个问题？

编辑。

如果我将视图更改为：

def index(request):


vigentes = Contrato.objects.all()

print vigentes

for item in vigentes:
    print item 


template = loader.get_template('contratos/index.html')
context = RequestContext(request, {
    'vigentes': vigentes,
    'vigentes_total': vigentes_total,
})

if not request.user.is_authenticated():
    return HttpResponse("You are not logged in.")

else:       
    return HttpResponse(template.render(context))

我只看到第一项。问题是视图中的for循环。

如何使用DJango中的视图更新模型字段

0 个答案: