django-modelForm中的queryset [英] django - queryset in modelForm

问题描述

我需要按日期时间在 forms.py 中过滤 Food 模型，但是我不知道该怎么做它。有人可以帮我吗？

I need to filter Food model by datetime in forms.py, but I do not know how to do it. Could anyone help me?

models.py

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')

推荐答案

您可以使用lte（小于或等于）过滤查询集或gte（大于或等于） g方式：-

You can filter your queryset by using lte(Less than or equal) or gte(Greater than or equal) in following way:-

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

或

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

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