我有一个ID为Price_from,price_to和drive_from,driven_too的搜索表单,但是由于price和driven是相同的逻辑,因此我只关注其中之一,因为price_from和price_to不在模型中,所以它给了我错误,因为此参数不存在,因此无法进行任何比较。
如何在汽车对象中搜索价格在此范围内(price_from-price_to)的对象,我应该修改模型吗?
# model
class Car(models.Model):
id = models.CharField(max_length=255)
number = models.CharField(max_length=255)
price = models.IntegerField()
# view
def search(request):
if 'search_filter' in request.GET:
search_params = request.GET.dict()
search_params.pop("search_filter")
price_from = search_params['price_from']
price_to = search_params['price_to']
q_list = [Q(("{}__icontains".format(param), search_params[param])) for param in search_params
if search_params[param] is not None]
my_query = Car.objects.filter(reduce(operator.and_, q_list))
cars = [{
'id': x.id,
'driven': x.driven,
'price': x.price,
} for x in my_query
]
return JsonResponse({'data': cars})
context = {'cars': Car.objects.all().order_by('price')}
return render(request, 'cars/car_index.html', context)
答案 0 :(得分:1)
您可以使用以下方法构造Q(..)
对象:
Q(price__gte=price_from, price__lte=price_to)
或者您可以使用以下方法排除边界:
Q(price__gt=price_from, price__lt=price_to)
尽管price_from
或price_to
可能是None
,并因此使用kwargs构造了一个Q
对象:
if 'search_filter' in request.GET:
search_params = request.GET.dict()
search_params.pop('search_filter')
price_from = search_params.pop('price_from', None)
price_to = search_params.pop('price_to', None)
q_list = [
Q(('{}__icontains'.format(k), v))
for k, v in search_params.items()
if v is not None
]
price = { 'price__gte': price_from, 'price__lte': price_to }
q_list.append(Q(**{k: int(v) for k, v in price.items() if v is not None}))
# ...