如何获取html输入并在views.py中使用它？

Question

我检查了文档和堆栈，但仍然无法实现。我想要html中的按钮来获取输入数据并将其作为城市注入到views.py中，并在我对城市变量进行硬编码时制作其余的代码。而且不应该在新的网址上创建。感谢帮助！ html：

<form method="POST "action="{% url 'weather' %}">
    {% csrf_token %}
    <input type="text" name="city" id="city"><br> 
    <button type="submit" class="btn btn-info">Get my weather</button>
</form>

views.py：

def scrape_weather(request):
    if request.method == 'POST':

        old_weather = Weather.objects.all()
        old_weather.delete()
        api_adress = "http://api.openweathermap.org/data/2.5/weather?q="
        api_key = "&appid=3a99cf24b53d85f4afad6cafe99d3a34"
        city = request.POST.get("city")

        url = api_adress + city + api_key

        json_data = requests.get(url).json()
        new_weather = json_data['weather'][0]['main']
        degree_kelvin = int(json_data['main']['temp'])
        degree = degree_kelvin-273
        pressure = json_data['main']['pressure']      

        new_weather = Weather()
        new_weather.degree = degree
        new_weather.pressure = pressure

        new_weather.weather = new_weather
        new_weather.save()

    return render(request, "news/home.html")

urls.py：

path('weather/', scrape_weather, name='weather'),