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我有一个模型中的字段,我想成为一个选择或空白。可能有尽可能多的空白项目,但对于其他所有其他项目都必须是唯一的,即在同一天可能不会有两个特殊项目。我想为一个模型,是唯一的选择,但可能是空白或无效
这里是我的views.py
class Item(models.Model):
CATEGORY_CHOICES = (('Sandwich', 'Sandwich'), ('Salad', 'Salad'), ('Slider', 'Slider'), ('Side', 'Side'), ('Drink', 'Drink'))
DAYS = (('Monday','Monday'), ('Tuesday','Tuesday'), ('Wednesday','Wednesday'), ('Thursday','Thursday'), ('Friday','Friday'), ('Saturday','Saturday'), ('Sunday','Sunday'))
name = models.CharField(max_length=50)
description = models.TextField()
category = models.CharField(max_length=50)
price = models.DecimalField(max_digits=6, decimal_places=2)
category = models.CharField(max_length=30, choices=CATEGORY_CHOICES)
order = models.PositiveSmallIntegerField(default=0, blank=True, null=True)
special = models.BooleanField(default=False)
day = models.CharField(max_length=30, choices=DAYS, unique=True, blank=True)
publish = models.DateField(auto_now=False, auto_now_add=False),
updated = models.DateTimeField(auto_now=True, auto_now_add=False)
def __str__(self):
return self.name
我也试图通过一周即的订购日期为每日特价(星期一,星期二,等等),我认为下面的看法是工作,但它似乎按照订单编号
def specials(request):
specials_list = Item.objects.filter(special = True).order_by('day')
context = {
'specials_list': specials_list,
}
return render(request, 'menu/specials.html', context)
在此先感谢您的帮助!
“我有一个模型领域,我想成为一个选择或空白。” - 你指的是哪个领域? – solarissmoke