英文:

Context doesn`t send to the render_to_string Python/Django

问题 {#heading}

抱歉，我无法执行您的请求。如果您需要任何翻译或其他帮助，请随时提问。 英文:

hi guys I have a Django view that I want to filter my products with ajax(Js) and I think u know that I need to show the products to template too! Im using render to string Function which gets a template name and a context(dictionary) and return the string of the template , now my problem is my , idk why but my context is not sending to the template , if u have ever used Pycharm u know that for example when u map a template , if every thing is ok it will shows the template icon in the left near the line number! and every things is ok for me but still context doesnt send , i should say that I have a for loop in my template and I think u Know that too , when u click on your for loop context it will move you to the context in view but for me it shows "Cannot find the Declaration" ill write my codes , and ill be thankful if u guys help me ( and I have tried context: {"asd": asd} , {"asd": asd} every methods for a

template:

{% for product in products %}
something...
{% empty %}
if products doesnt exist...
{% endfor %}


views:


def filter_products(request):
if request.method == \"GET\":
categories = request.GET.getlist(\"category\")
products = Product.objects.all().order_by(\"-created_at\").distinct()


        if len(categories) > 0:
            products = Product.objects.filter(category__name=categories).order_by("-     created_at").distinct()

        data = render_to_string("core/async/product-list.html", context={"products": products})
        print(data)
        return JsonResponse({"data": data, "bool": True})
    return redirect("home_app:main")

答案1 {#1}

得分: 0

我自己解决了这个问题 ，问题是产品没有发送到上下文（正如我之前所说的），为什么它不发送呢？因为在我有一个过滤查询集的products变量中，我给了category__name过滤器的categories，而category__name只接收一个而不是元组列表等等，如果你注意到，我的categories变量是一个request.GET.getlist！它获取了一个列表，为了将列表传递给过滤器，你必须这样做：在category名称后面添加"__in"（在category名称之后添加"__in"），就是这样！

products = Product.objects.filter(category__name__in=categories).order_by("-created_at").distinct() 英文:

Guys i solved the problem myself , and the problem was the products doesnt send to the context (as i said before) and why it doesnt send? because in products variable that i have a filter queryset i gave categories to the category__name filter , and category__name just receive one thing not tuple list and ... , and if u noticed , my categories variable is a request.GET.getlist ! its getting list , and for giving a list to a filter u have to do this :
category__name__in (add an "__in" after the category name) and just this !

products = Product.objects.filter(category__name__in=categories).order_by("-created_at").distinct()