django - queryset in modelForm

Question

我需要过滤Food model by datetime在forms.py，但我不知道该怎么做。任何人都可以帮我吗？

models.py

class Food(models.Model): 
    class Meta: 
     verbose_name = "Food" 
     verbose_name_plural = "Foods" 

    def __unicode__(self): 
     return self.food_name 

    food_name = models.CharField(verbose_name="Food Name", max_length=50) 
    serve_date = models.DateTimeField(verbose_name="Serve Date") 

forms.py

class Reserve(forms.ModelForm): 
    food_name = forms.ModelChoiceField(
     queryset=Food.objects.all(), 
     widget=forms.Select(), 
     empty_label=u"برای انتخاب غذا کلیک کنید", 
     ) 

    class Meta: 
     model = Reservation 
     fields = ('food_count', 'food_name') 

Answer 1

您可以通过使用LTE筛选查询集或GTE以下列方式（大于或等于）（大于或等于以内）： -

queryset=Food.objects.filter(serve_date__lte='2006-01-01') 

或

queryset=Food.objects.filter(serve_date__gte='2006-01-01')