Question

我是新来的django。我想在html模板文件中经过特定的天数或周数后获取日期。

我的模板文件代码：

{% for factors in c.factor %}
    {% for factor_details in factors.factor_values %}
         {{factor_details.id}}
         {{factor_details.factor_value}}
            # here this is given date {{order_detail.oderdate}} and this is number of days and weeks {{factor_details.factor_value}}.

    {% endfor %}
{% endfor %}

订购型号：

class Order(models.Model):
    user = models.ForeignKey(settings.AUTH_USER_MODEL, null=True, blank=True,on_delete=models.CASCADE)
    order_no = models.CharField(max_length=120, blank=True) # AB31DE3
    shipping_address = models.ForeignKey(Addresses, related_name="shipping_address",null=True, blank=True,on_delete=models.CASCADE)
    billing_address = models.ForeignKey(Addresses, related_name="billing_address",null=True, blank=True,on_delete=models.CASCADE)
    cart = models.ForeignKey(Cart,on_delete=models.CASCADE)
    shipping_total = models.DecimalField(default=0.00, max_digits=65, decimal_places=2)
    totalamount = models.DecimalField(default=0.00, max_digits=65, decimal_places=2)
    stripe_id = models.CharField(max_length=120, blank=True)
    payment_status = models.CharField(max_length=120, blank=True)
    oderdate = models.DateTimeField(auto_now_add=True)
    is_active = models.BooleanField(default=True)

因子模型：

class ProductPriceFactor(models.Model):
    factor_value = models.CharField(max_length=255)
    name = models.CharField(max_length=255)
    is_active = models.BooleanField(default=True)

来自不同模型的

orderdate和factor_values，因此来自order模型的orderdate和来自ProductPriceFactor模型的factor_value。请帮我。

Answer 1

我假设factor_details来自模型。然后，您可以在模型中添加方法并在模板中呈现值。例如：

import datetime

class FactorDetail(models.Model):
   ...

   def date_after_some_days(self):
       return self.oderdate + datetime.timedelta(days=self.factor_value)

然后在模板中呈现值：

{% for factor_details in factors.factor_values %}
     {{ factor_details.id }}
     {{ factor_details.factor_value }}
     {{ factor_details.date_after_some_days }}
{% endfor %}

更新

以上解决方案在这里不起作用，因为您在orderdate和factor_value之间没有任何关系。相反，您可以创建一个template filter：

# template filter tag

@register.filter(name='factor_date')
def factor_date(value, arg):

    return value + datetime.timedelta(days=int(arg))

并使用过滤器更新模板：

{% for factor_details in factors.factor_values %}
     {{ factor_details.id }}
     {{ factor_details.factor_value }}
     {{ orderdetail.oderdate|factor_date:factor_details.factor_value }}
{% endfor %}

如何从Django模板中的给定日期开始经过特定天数后获取日期

1 个答案:

更新