**条件：**我有一个模型，在数据库中创建了一个空表，我正在尝试创建一个html表单，该表单将填充表中相应列的字段。下面是我的应用程序的外观：
模型.py

from django.db import models

class Cities(models.Model):
    city = models.CharField(max_length=100)

    def __str__(self):
    return self.state   

class Routes(models.Model):
    route_name = models.CharField(max_length=50, default='Route')
    lvl = models.IntegerField(default=0)
    about = models.TextField(max_length=1500)
    total_distance = models.IntegerField(default=0)
    city = models.ForeignKey(Cities, on_delete=models.CASCADE)

表单.py

from django.forms import ModelForm
from .models import Routes

class RouteForm(ModelForm):
    class Meta:
        model = Routes
        fields = '__all__'

查看次数.py

from django.shortcuts import get_object_or_404, render
from django.http import HttpResponse

from routes_form.forms import RouteForm

def getAbout(request):
    if request.method == 'POST':
        form = RouteForm(request.POST)
        if form.is_valid():
            form.save()
    return render(request, 'routes_form/form_page.html', {'form': form})

表单.html

<form method="post">
        {% csrf_token %}
        <legend>
            <h2>About</h2>
        </legend>
        {{ form }}
        <input type="text" placeholder="Write more about the route: about waypoints, points of interest and warnings.">
        <input type="submit" value="Send route">
</form>

我已经试着按照Django Forms文档中的指示做了所有的事情，但是仍然有一些错误。甚至在启动服务器的那一刻，它也写了一个错误：

cannot access local variable 'form' where it is not associated with a value